diff --git a/src/a_sibling_file.rs b/src/a_sibling_file.rs
new file mode 100644
index 0000000..b66bb7b
--- /dev/null
+++ b/src/a_sibling_file.rs
@@ -0,0 +1,5 @@
+pub mod sibling_mod {
+    pub fn sibling_fn() {
+        println!("Hello, sibling!");
+    }
+}
\ No newline at end of file
diff --git a/src/bin/lc-1552.rs b/src/bin/lc-1552.rs
new file mode 100644
index 0000000..2f9a894
--- /dev/null
+++ b/src/bin/lc-1552.rs
@@ -0,0 +1,37 @@
+use std::io::stdin;
+
+struct Solution;
+
+impl Solution {
+    pub fn max_distance(mut position: Vec<i32>, m: i32) -> i32 {
+        position.sort_unstable();
+        let mut l = 0;
+        let mut r = position.last().unwrap().to_owned() - position.first().unwrap().to_owned();
+        while l != r {
+            let mid = l + r + 1 >> 1;
+            let mut prev = -mid;
+            let mut cnt = 0;
+            for &x in position.iter() {
+                if x - prev < mid { continue; }
+                cnt += 1;
+                prev = x;
+            }
+            if cnt < m {
+                r = mid - 1;
+            } else {
+                l = mid;
+            }
+        }
+        l
+    }
+}
+
+fn main() {
+    let mut buf = String::new();
+    stdin().read_line(&mut buf).ok();
+    let position = buf.trim().split(' ').map(|x|x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
+    buf.clear();
+    stdin().read_line(&mut buf).ok();
+    let m = buf.trim().parse::<i32>().unwrap();
+    println!("{}", Solution::max_distance(position, m));
+}
\ No newline at end of file
diff --git a/src/bin/lc-1599.rs b/src/bin/lc-1599.rs
new file mode 100644
index 0000000..5cc1d24
--- /dev/null
+++ b/src/bin/lc-1599.rs
@@ -0,0 +1,54 @@
+struct Solution;
+
+impl Solution {
+    pub fn min_operations_max_profit(customers: Vec<i32>, boarding_cost: i32, running_cost: i32) -> i32 {
+        let delta = 4 * boarding_cost - running_cost;
+        let mut max_tm = 0;
+        let mut max_amount = 0;
+        let mut curr_tm = 0;
+        let mut curr_amount = 0;
+        let mut cand_amount = 0;
+        let mut ac = 0;
+        for (i, &x) in customers.iter().enumerate() {
+            let i = i as i32;
+            if curr_tm < i {
+                ac = 0;
+                curr_tm = i;
+                curr_amount = cand_amount - (i - curr_tm) * running_cost;
+            }
+            let x = x + ac;
+            curr_amount += (x >> 2) * delta;
+            curr_tm += x >> 2;
+            if curr_amount > max_amount || curr_amount == max_amount && curr_tm < max_tm {
+                max_tm = curr_tm;
+                max_amount = curr_amount;
+            }
+            let residual = x - (x >> 2 << 2);
+            ac = residual;
+            let tmp = curr_amount + residual * boarding_cost - running_cost;
+            cand_amount = tmp;
+            if tmp > max_amount {
+                max_tm = curr_tm + 1;
+                max_amount = tmp;
+            }
+        }
+        if max_amount <= 0 {
+            -1
+        } else {
+            max_tm
+        }
+    }
+}
+
+fn main() {
+    let mut buf = String::new();
+    std::io::stdin().read_line(&mut buf).ok();
+    let customers: Vec<i32> = buf.trim().split(' ').map(|x|x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let boarding_cost: i32 = buf.trim().parse::<i32>().unwrap();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let running_cost: i32 = buf.trim().parse::<i32>().unwrap();
+    println!("{}", Solution::min_operations_max_profit(customers, boarding_cost, running_cost));
+}
\ No newline at end of file
diff --git a/src/bin/lc-1760.rs b/src/bin/lc-1760.rs
new file mode 100644
index 0000000..307bcd1
--- /dev/null
+++ b/src/bin/lc-1760.rs
@@ -0,0 +1,33 @@
+struct Solution;
+
+impl Solution {
+    pub fn minimum_size(nums: Vec<i32>, max_operations: i32) -> i32 {
+        let mut l = 1;
+        let mut r = *nums.iter().max().unwrap();
+        while l != r {
+            let mid = l + r >> 1;
+            eprint!("{:?} ", mid);
+            let mut cnt = 0;
+            for &x in nums.iter() {
+                cnt += (x - 1) / mid;
+            }
+            eprintln!("{:?}", cnt);
+            if cnt > max_operations {
+                l = mid + 1;
+            } else {
+                r = mid;
+            }
+        }
+        l
+    }
+}
+
+fn main() {
+    let mut buf = String::new();
+    std::io::stdin().read_line(&mut buf).ok();
+    let nums: Vec<i32> = buf.trim().split(' ').map(|x|x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let max_operations: i32 = buf.trim().parse::<i32>().unwrap();
+    println!("{}", Solution::minimum_size(nums, max_operations));
+}
\ No newline at end of file
diff --git a/src/bin/lc-2226.rs b/src/bin/lc-2226.rs
new file mode 100644
index 0000000..ec3bef8
--- /dev/null
+++ b/src/bin/lc-2226.rs
@@ -0,0 +1,36 @@
+struct Solution;
+
+impl Solution {
+    pub fn maximum_candies(candies: Vec<i32>, k: i64) -> i32 {
+        let check = |m: i32| {
+            let mut cnt = 0;
+            candies.iter().for_each(|&x|cnt += (x / m) as i64);
+            cnt >= k
+        };
+        let mut l = 1;
+        let mut r = *candies.iter().min().unwrap() ;
+        while l != r {
+            let mid = l + r + 1 >> 1;
+            if !check(mid) {
+                r = mid - 1;
+            } else {
+                l = mid;
+            }
+        }
+        if check(l) {
+            l
+        } else {
+            0
+        }
+    }
+}
+
+fn main() {
+    let mut buf = String::new();
+    std::io::stdin().read_line(&mut buf).ok();
+    let candies: Vec<i32> = buf.trim().split(' ').map(|x|x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let k: i64 = buf.trim().parse::<i64>().unwrap();
+    println!("{}",Solution::maximum_candies(candies, k));
+}
\ No newline at end of file
diff --git a/src/bin/lc-2439.rs b/src/bin/lc-2439.rs
new file mode 100644
index 0000000..27f9c8f
--- /dev/null
+++ b/src/bin/lc-2439.rs
@@ -0,0 +1,28 @@
+struct Solution;
+
+impl Solution {
+    pub fn minimize_array_value(nums: Vec<i32>) -> i32 {
+        let mut l = 0;
+        let mut r = *nums.iter().max().unwrap();
+        while l != r {
+            let mid = l + r >> 1;
+            let mut ac = 0i64;
+            for &x in nums.iter().rev() {
+                ac = 0.max(x as i64 + ac - mid as i64);
+            }
+            if ac > 0 {
+                l = mid + 1;
+            } else {
+                r = mid;
+            }
+        }
+        l
+    }
+}
+
+fn main() {
+    let mut buf = String::new();
+    std::io::stdin().read_line(&mut buf).ok();
+    let nums: Vec<i32> = buf.trim().split(' ').map(|x|x.parse::<i32>().unwrap()).collect::<Vec<i32>>();
+    println!("{}", Solution::minimize_array_value(nums));
+}
\ No newline at end of file
diff --git a/src/bin/lc-2513.rs b/src/bin/lc-2513.rs
new file mode 100644
index 0000000..798e605
--- /dev/null
+++ b/src/bin/lc-2513.rs
@@ -0,0 +1,50 @@
+struct Solution;
+
+impl Solution {
+    pub fn minimize_set(divisor1: i32, divisor2: i32, unique_cnt1: i32, unique_cnt2: i32) -> i32 {
+        let divisor1 = divisor1 as i64;
+        let divisor2 = divisor2 as i64;
+        let unique_cnt1 = unique_cnt1 as i64;
+        let unique_cnt2 = unique_cnt2 as i64;
+        let gcd = |mut x: i64, mut y: i64|{
+            while y != 0 {
+                (x, y) = (y, x % y);
+            }
+            x
+        };
+        let mut l = 1;
+        let mut r = i64::MAX;
+        let lcm = divisor1 * divisor2 / gcd(divisor1, divisor2);
+        while l != r {
+            let mid = l + (r - l >> 1);  // mid == 11
+            let a = mid / divisor1;  // a == 5
+            let b = mid / divisor2;  // b == 2, c == 2
+            let c = mid / lcm;       // c == 3
+            let o = mid - a - b + c; // o == 6
+            eprintln!("mid = {mid}, a = {a}, b = {b}, c = {c}, o = {o}");
+            if b - c + o < unique_cnt1 || a - c + o - 0.max(unique_cnt1 - b + c) < unique_cnt2 {
+                l = mid + 1;
+            } else {
+                r = mid;
+            }
+        }
+        l as i32
+    }
+}
+
+fn main() {
+    let mut buf = String::new();
+    std::io::stdin().read_line(&mut buf).ok();
+    let divisor1: i32 = buf.trim().parse::<i32>().unwrap();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let divisor2: i32 = buf.trim().parse::<i32>().unwrap();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let unique_cnt1: i32 = buf.trim().parse::<i32>().unwrap();
+    buf.clear();
+    std::io::stdin().read_line(&mut buf).ok();
+    let unique_cnt2: i32 = buf.trim().parse::<i32>().unwrap();
+    println!("{}", Solution::minimize_set(divisor1, divisor2, unique_cnt1, unique_cnt2));
+
+}
\ No newline at end of file
diff --git a/src/bin/lc-757.rs b/src/bin/lc-757.rs
new file mode 100644
index 0000000..037e3ca
--- /dev/null
+++ b/src/bin/lc-757.rs
@@ -0,0 +1,32 @@
+struct Solution;
+
+impl Solution {
+    pub fn intersection_size_two(mut intervals: Vec<Vec<i32>>) -> i32 {
+        intervals.sort_unstable_by(|x,y|
+            if x[1] == y[1] {
+                y[0].cmp(&x[0])
+            } else {
+                x[1].cmp(&y[1])
+            }
+        );
+        let mut t1 = -1;
+        let mut t2 = -1;
+        let mut res = 0;
+        for x in intervals {
+            if x[0] > t2 {
+                t1 = x[1] - 1;
+                t2 = x[1];
+                res += 2;
+            } else if x[0] > t1 {
+                t1 = t2;
+                t2 = x[1];
+                res += 1
+            }
+        }
+        res
+    }
+}
+
+fn main() {
+
+}
\ No newline at end of file
diff --git a/src/test_mod.rs b/src/test_mod.rs
new file mode 100644
index 0000000..511d0e1
--- /dev/null
+++ b/src/test_mod.rs
@@ -0,0 +1,5 @@
+pub mod a_mod {
+    pub fn hello_world() {
+        println!("Hello, world!");
+    }
+}
\ No newline at end of file
diff --git a/src/test_mods/a_crate.rs b/src/test_mods/a_crate.rs
new file mode 100644
index 0000000..e27c0c1
--- /dev/null
+++ b/src/test_mods/a_crate.rs
@@ -0,0 +1,5 @@
+pub mod another_mod {
+    pub fn another_fn() {
+        println!("Hello world again!");
+    }
+}
\ No newline at end of file
diff --git a/src/test_mods/mod.rs b/src/test_mods/mod.rs
new file mode 100644
index 0000000..da4b606
--- /dev/null
+++ b/src/test_mods/mod.rs
@@ -0,0 +1,2 @@
+mod a_crate;
+pub use self::a_crate::another_mod;