Maximum sum

warning: unused import: `min`
 --> input/code.rs:1:21
  |
1 | use std::cmp::{max, min};
  |                     ^^^
  |
  = note: `#[warn(unused_imports)]` on by default

warning: unused import: `std::collections::VecDeque`
 --> input/code.rs:2:5
  |
2 | use std::collections::VecDeque;
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^

warning: 2 warnings emitted

use std::cmp::{max, min};
use std::collections::VecDeque;
use std::io::{self, Read};

macro_rules! input {
    ($it: expr) => {
        $it.next().unwrap().parse().unwrap()
    };
    ($it: expr, $T: ty) => {
        $it.next().unwrap().parse::<$T>().unwrap()
    };
}
/*
mod classes;
mod homework;

fn main() {
    // println!("{}", "-".repeat(20));
    classes::c05::task2();
    // homework::hw2::task2();
    // println!("{}", "-".repeat(20));
}
// */

fn main() {
    let mut buf = String::new();
    io::stdin().read_to_string(&mut buf).unwrap();

    let mut it = buf.split_whitespace();

    let n: i64 = input!(it);

    let v: Vec<i64> = (0..n).map(|_| input!(it)).collect();

    let mut sum = 0;
    let mut max_so_far = v[0];

    for x in v {
        sum+=x;
        if sum<0 {
            sum = 0;
        }
        max_so_far = max(sum, max_so_far);
    }
    println!("{}", max_so_far);
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: WRONG ANSWER

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER