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답안 #19527

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
19527 2016-02-24T16:12:58 Z Namnamseo Σ (kriii4_P2) C++14
100 / 100
 25 ms 1716 KB 
#include <iostream>
using namespace std;
typedef long long ll;
int M=int(1e9)+7;
ll pow(ll a,ll b){
    if(b==0) return 1;
    ll ret=pow(a,b/2);
    ret=(ret*ret)%M;
    if(b&1) ret=(ret*a)%M;
    return ret;
}
int main()
{
    ll ret=0, tmp;
    int n;
    cin>>n;
    int a,b;
    for(;n--;){
        cin>>a>>b;
        tmp=b*pow(a,M-2)%M;
        ret=(ret+tmp)%M;
    }
    cout<<ret;
    return 0;
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 24 ms 1716 KB Output is correct
2 Correct 21 ms 1716 KB Output is correct
3 Correct 24 ms 1716 KB Output is correct
4 Correct 23 ms 1716 KB Output is correct
5 Correct 21 ms 1716 KB Output is correct
6 Correct 24 ms 1716 KB Output is correct
7 Correct 19 ms 1716 KB Output is correct
8 Correct 19 ms 1716 KB Output is correct
9 Correct 22 ms 1716 KB Output is correct
10 Correct 19 ms 1716 KB Output is correct
11 Correct 24 ms 1716 KB Output is correct
12 Correct 24 ms 1716 KB Output is correct
13 Correct 22 ms 1716 KB Output is correct
14 Correct 25 ms 1716 KB Output is correct
15 Correct 23 ms 1716 KB Output is correct
16 Correct 23 ms 1716 KB Output is correct
17 Correct 22 ms 1716 KB Output is correct
18 Correct 23 ms 1716 KB Output is correct
19 Correct 23 ms 1716 KB Output is correct
20 Correct 19 ms 1716 KB Output is correct