#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF 1000000000000000000
#define MOD 1000000007
int32_t main() {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n;
cin >> n;
int h[n], w[n], dp[n];
for(int i = 0; i < n; i++) cin >> h[i];
for(int i = 0; i < n; i++) cin >> w[i];
for(int i = 0; i < n; i++) {
int num = (w[i]+1)*w[i]/2 % MOD, num2 = (h[i]+1)*h[i]/2 % MOD;
dp[i] = num * num2 % MOD + (i==0?0:dp[i-1]);
int mn = h[i];
for(int j = i-1; j >= 0; j--) {
mn = min(mn, h[j]);
num = w[i]*w[j] % MOD;
num2 = (mn+1)*mn/2 % MOD;
dp[i] += num * num2 % MOD;
dp[i] %= MOD;
}
}
cout << dp[n-1];
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
4 ms |
516 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
4 ms |
348 KB |
Output is correct |
3 |
Execution timed out |
1029 ms |
1368 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
4 ms |
476 KB |
Output is correct |
2 |
Correct |
336 ms |
664 KB |
Output is correct |
3 |
Execution timed out |
1056 ms |
1624 KB |
Time limit exceeded |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
4 ms |
732 KB |
Output is correct |
3 |
Correct |
323 ms |
664 KB |
Output is correct |
4 |
Execution timed out |
1074 ms |
1628 KB |
Time limit exceeded |
5 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
4 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
5 ms |
344 KB |
Output is correct |
9 |
Correct |
4 ms |
600 KB |
Output is correct |
10 |
Correct |
4 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
1 ms |
348 KB |
Output is correct |
13 |
Correct |
4 ms |
472 KB |
Output is correct |
14 |
Correct |
5 ms |
348 KB |
Output is correct |
15 |
Correct |
4 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
4 ms |
516 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
5 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
1 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
496 KB |
Output is correct |
10 |
Correct |
4 ms |
368 KB |
Output is correct |
11 |
Execution timed out |
1035 ms |
1372 KB |
Time limit exceeded |
12 |
Halted |
0 ms |
0 KB |
- |