oj.uz

답안 #240935

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
240935 2020-06-21T14:21:41 Z SamAnd Savrsen (COCI17_savrsen) C++17
120 / 120
 1048 ms 39548 KB 
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
const int N = 10000007;

int u[N];

void solv()
{
    for (int i = 0; i < N; ++i)
        u[i] = i;
    for (int i = 1; i < N; ++i)
    {
        for (int j = i + i; j < N; j += i)
            u[j] -= i;
    }
    int l, r;
    scanf("%d%d", &l, &r);
    ll ans = 0;
    for (int i = l; i <= r; ++i)
        ans += abs(u[i]);
    printf("%lld\n", ans);
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    //ios_base::sync_with_stdio(false), cin.tie(0);
    solv();
    return 0;
}

//while ((double)clock() / CLOCKS_PER_SEC <= 0.9){}

Compilation message

savrsen.cpp: In function 'void solv()':
savrsen.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &l, &r);
     ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
120.0 / 120.0

# 결과 실행 시간 메모리 Grader output
1 Correct 991 ms 39416 KB Output is correct
2 Correct 999 ms 39548 KB Output is correct
3 Correct 974 ms 39544 KB Output is correct
4 Correct 986 ms 39544 KB Output is correct
5 Correct 1036 ms 39544 KB Output is correct
6 Correct 1014 ms 39544 KB Output is correct
7 Correct 1048 ms 39424 KB Output is correct
8 Correct 994 ms 39544 KB Output is correct