| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 19412 |
2016-02-24T11:28:22 Z |
ekfrl0526 |
Σ (kriii4_P2) |
C++14 |
|
11 ms |
1720 KB |
#include<bits/stdc++.h>
using namespace std;
const long long divs = 1000000007;
vector<long long> as;
void initial(long long a) {
long long ia = a;;
for (int i = 0; i < 64; i++) {
if (ia >= divs) ia = ia%divs;
as.push_back(ia);
ia *= ia;
}
}
int main() {
int n;
long long ans = 0;
scanf("%d ", &n);
while (n--) {
as.clear();
long long a, b;
long long x = divs - 2;
scanf("%lld %lld", &b, &a);
initial(b);
int c = 0;
long long result = 1;
while (x > 0) {
if (x % 2 == 1) {
result *= as[c];
result %= divs;
}
x /= 2;
c++;
}
result *= a % divs;
result %= divs;
ans += result;
ans %= divs;
}
cout << ans << endl;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
1720 KB |
Output is correct |
| 2 |
Correct |
9 ms |
1720 KB |
Output is correct |
| 3 |
Correct |
11 ms |
1720 KB |
Output is correct |
| 4 |
Correct |
6 ms |
1720 KB |
Output is correct |
| 5 |
Correct |
0 ms |
1720 KB |
Output is correct |
| 6 |
Correct |
11 ms |
1720 KB |
Output is correct |
| 7 |
Correct |
10 ms |
1720 KB |
Output is correct |
| 8 |
Correct |
3 ms |
1720 KB |
Output is correct |
| 9 |
Correct |
5 ms |
1720 KB |
Output is correct |
| 10 |
Correct |
7 ms |
1720 KB |
Output is correct |
| 11 |
Correct |
0 ms |
1720 KB |
Output is correct |
| 12 |
Correct |
10 ms |
1720 KB |
Output is correct |
| 13 |
Correct |
7 ms |
1720 KB |
Output is correct |
| 14 |
Correct |
7 ms |
1720 KB |
Output is correct |
| 15 |
Correct |
0 ms |
1720 KB |
Output is correct |
| 16 |
Correct |
11 ms |
1720 KB |
Output is correct |
| 17 |
Correct |
11 ms |
1720 KB |
Output is correct |
| 18 |
Correct |
8 ms |
1720 KB |
Output is correct |
| 19 |
Correct |
7 ms |
1720 KB |
Output is correct |
| 20 |
Correct |
8 ms |
1720 KB |
Output is correct |
