Submission #67559425

Source Code Expand

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <cmath>
#include <numeric>
#include <queue>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>
#include <atcoder/all>
using namespace std;

using mint = atcoder::modint998244353;

int main() {
    long long N;
    cin >> N;

    mint ans = 0;
    ans += mint(N) * (N + 1) / 2;

    mint x = 0;
    // for (int i = 1; i < N; i++) x += N / i;
    long long m = 1;
    for (long long i = 1; i * i <= N; i++) {
        x += 2 * (N / i);
        m = i;
    }
    x -= m * m; 

    // cout << ans.val() << endl;
    // cout << x.val() << endl;

    ans -= x;
    cout << ans.val() << endl;
    return 0;
}

Submission Info

Submission Time
Task E - Count A%B=C
User miyama_akane
Language C++ 20 (gcc 12.2)
Score 475
Code Size 752 Byte
Status AC
Exec Time 4 ms
Memory 3680 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 475 / 475
Status
AC × 3
AC × 56
Set Name Test Cases
Sample 00-sample-01.txt, 00-sample-02.txt, 00-sample-03.txt
All 00-sample-01.txt, 00-sample-02.txt, 00-sample-03.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 01-11.txt, 01-12.txt, 01-13.txt, 01-14.txt, 01-15.txt, 01-16.txt, 01-17.txt, 01-18.txt, 01-19.txt, 01-20.txt, 01-21.txt, 01-22.txt, 01-23.txt, 01-24.txt, 01-25.txt, 01-26.txt, 01-27.txt, 01-28.txt, 01-29.txt, 01-30.txt, 01-31.txt, 01-32.txt, 01-33.txt, 01-34.txt, 01-35.txt, 01-36.txt, 01-37.txt, 01-38.txt, 01-39.txt, 01-40.txt, 01-41.txt, 01-42.txt, 01-43.txt, 01-44.txt, 01-45.txt, 01-46.txt, 01-47.txt, 01-48.txt, 01-49.txt, 01-50.txt, 01-51.txt, 01-52.txt, 01-53.txt
Case Name Status Exec Time Memory
00-sample-01.txt AC 1 ms 3520 KiB
00-sample-02.txt AC 1 ms 3472 KiB
00-sample-03.txt AC 3 ms 3488 KiB
01-01.txt AC 1 ms 3500 KiB
01-02.txt AC 1 ms 3488 KiB
01-03.txt AC 1 ms 3396 KiB
01-04.txt AC 1 ms 3676 KiB
01-05.txt AC 1 ms 3480 KiB
01-06.txt AC 1 ms 3596 KiB
01-07.txt AC 1 ms 3504 KiB
01-08.txt AC 1 ms 3588 KiB
01-09.txt AC 1 ms 3520 KiB
01-10.txt AC 1 ms 3584 KiB
01-11.txt AC 1 ms 3592 KiB
01-12.txt AC 1 ms 3484 KiB
01-13.txt AC 1 ms 3484 KiB
01-14.txt AC 1 ms 3512 KiB
01-15.txt AC 4 ms 3392 KiB
01-16.txt AC 4 ms 3588 KiB
01-17.txt AC 4 ms 3516 KiB
01-18.txt AC 4 ms 3496 KiB
01-19.txt AC 4 ms 3516 KiB
01-20.txt AC 4 ms 3464 KiB
01-21.txt AC 4 ms 3496 KiB
01-22.txt AC 4 ms 3488 KiB
01-23.txt AC 4 ms 3468 KiB
01-24.txt AC 4 ms 3484 KiB
01-25.txt AC 4 ms 3468 KiB
01-26.txt AC 4 ms 3516 KiB
01-27.txt AC 4 ms 3492 KiB
01-28.txt AC 1 ms 3468 KiB
01-29.txt AC 1 ms 3524 KiB
01-30.txt AC 1 ms 3516 KiB
01-31.txt AC 1 ms 3476 KiB
01-32.txt AC 1 ms 3512 KiB
01-33.txt AC 1 ms 3476 KiB
01-34.txt AC 1 ms 3512 KiB
01-35.txt AC 1 ms 3508 KiB
01-36.txt AC 1 ms 3480 KiB
01-37.txt AC 1 ms 3392 KiB
01-38.txt AC 1 ms 3392 KiB
01-39.txt AC 1 ms 3596 KiB
01-40.txt AC 1 ms 3524 KiB
01-41.txt AC 1 ms 3676 KiB
01-42.txt AC 3 ms 3680 KiB
01-43.txt AC 3 ms 3468 KiB
01-44.txt AC 1 ms 3488 KiB
01-45.txt AC 4 ms 3680 KiB
01-46.txt AC 2 ms 3468 KiB
01-47.txt AC 1 ms 3584 KiB
01-48.txt AC 2 ms 3512 KiB
01-49.txt AC 1 ms 3596 KiB
01-50.txt AC 3 ms 3484 KiB
01-51.txt AC 3 ms 3520 KiB
01-52.txt AC 1 ms 3480 KiB
01-53.txt AC 3 ms 3500 KiB