complete 1370.rs 2499.rs

storage/jungol/rs/completed/1370.rs

@@ -0,0 +1,39 @@
+use std::io::{read_to_string, stdin};
+
+fn main() {
+    let temp = read_to_string(stdin()).unwrap();
+    let mut iter = temp
+        .split_ascii_whitespace()
+        .map(|x| x.parse::<usize>().unwrap());
+
+    let n = iter.next().unwrap();
+
+    let mut arr = (0..n)
+        .map(|_| {
+            (
+                iter.next().unwrap(), // idx(no.)
+                iter.next().unwrap(), // start
+                iter.next().unwrap(), // end
+            )
+        })
+        .collect::<Vec<_>>();
+
+    arr.sort_by_key(|x| x.2);
+
+    let mut selected = vec![];
+
+    for (i, s, e) in arr {
+        if selected.len() == 0 {
+            selected.push((i, e));
+        } else {
+            if selected.last().unwrap().1 <= s {
+                selected.push((i, e));
+            }
+        }
+    }
+    println!("{}", selected.len());
+    for (i, _) in selected {
+        print!("{} ", i);
+    }
+    println!();
+}

storage/jungol/rs/completed/2499.rs

@@ -0,0 +1,33 @@
+use std::io::{read_to_string, stdin};
+
+fn main() {
+    let temp = read_to_string(stdin()).unwrap();
+    let mut iter = temp
+        .split_ascii_whitespace()
+        .map(|x| x.parse::<usize>().unwrap());
+
+    let n = iter.next().unwrap();
+    let weights = {
+        let mut v = (0..n).map(|_| iter.next().unwrap()).collect::<Vec<_>>();
+        v.sort();
+        
+        v
+    };
+
+    // we can make the range [min(S), sum(S)]
+    let mut res = 0;
+    let mut cum = 0;
+    for &w in weights.iter() {
+        if cum + 1 < w {
+            res = cum + 1;
+            break;
+        }
+        cum += w;
+    }
+
+    if res == 0 {
+        res = cum + 1;
+    }
+
+    println!("{}", res);
+}