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답안 #1105998

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1105998 2024-10-28T16:36:54 Z dzhoz0 Savrsen (COCI17_savrsen) C++17
120 / 120
 294 ms 78840 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1e7;
#define int long long
int sumFactor[MAXN + 5];

void init() {
    memset(sumFactor, 0, sizeof(sumFactor));
    for (long long p = 1; p * p <= MAXN; p++) {
        sumFactor[p * p] += p;
        for (long long q = p + 1; p * q <= MAXN; q++) sumFactor[p * q] += p + q;
    }
}
signed main()
{
    init();
    int l, r; cin >> l >> r;
    int res = 0;
    for(int x = l; x <= r; x++) {
        res += abs(2 * x - sumFactor[x]);
    }
    cout << res << '\n';
    return 0;
}

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 278 ms 78696 KB Output is correct
2 Correct 280 ms 78840 KB Output is correct
3 Correct 294 ms 78672 KB Output is correct
4 Correct 271 ms 78704 KB Output is correct
5 Correct 280 ms 78672 KB Output is correct
6 Correct 286 ms 78696 KB Output is correct
7 Correct 276 ms 78672 KB Output is correct
8 Correct 273 ms 78672 KB Output is correct