complete 1370.rs 2499.rs

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);
+}