Submission #34106901

Source Code Expand

use std::collections::HashMap;

use proconio::input;

fn main() {
    input! {
        n: usize,
        a: [usize; n],
    };
    let mut map = HashMap::new();
    for a_i in a {
        *map.entry(a_i % 200).or_insert(0) += 1;
    }

    let mut ans = 0_usize;
    for (_, c) in map {
        if c < 2 {
            continue;
        }
        ans += c * (c - 1) / 2;
    }

    println!("{}", ans);
}

Submission Info

Submission Time
Task C - Ringo's Favorite Numbers 2
User bouzuya
Language Rust (1.42.0)
Score 300
Code Size 404 Byte
Status AC
Exec Time 31 ms
Memory 5552 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 300 / 300
Status
AC × 3
AC × 26
Set Name Test Cases
Sample sample_01.txt, sample_02.txt, sample_03.txt
All extest_01.txt, extest_02.txt, extest_03.txt, extest_04.txt, extest_05.txt, sample_01.txt, sample_02.txt, sample_03.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt
Case Name Status Exec Time Memory
extest_01.txt AC 28 ms 5352 KiB
extest_02.txt AC 26 ms 5328 KiB
extest_03.txt AC 23 ms 5316 KiB
extest_04.txt AC 21 ms 5380 KiB
extest_05.txt AC 31 ms 5396 KiB
sample_01.txt AC 2 ms 2048 KiB
sample_02.txt AC 2 ms 2120 KiB
sample_03.txt AC 2 ms 2156 KiB
test_01.txt AC 1 ms 2080 KiB
test_02.txt AC 2 ms 2100 KiB
test_03.txt AC 2 ms 2000 KiB
test_04.txt AC 1 ms 2080 KiB
test_05.txt AC 2 ms 2064 KiB
test_06.txt AC 2 ms 2112 KiB
test_07.txt AC 2 ms 2032 KiB
test_08.txt AC 3 ms 2104 KiB
test_09.txt AC 19 ms 4156 KiB
test_10.txt AC 2 ms 2176 KiB
test_11.txt AC 11 ms 3032 KiB
test_12.txt AC 20 ms 4764 KiB
test_13.txt AC 25 ms 4568 KiB
test_14.txt AC 2 ms 1948 KiB
test_15.txt AC 26 ms 5396 KiB
test_16.txt AC 23 ms 5304 KiB
test_17.txt AC 23 ms 5408 KiB
test_18.txt AC 24 ms 5552 KiB