Submission #3249392

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
int main() {
int N, M; 
cin >> N >> M; 
long long int X[114514] = {}; 
long long int Y[114514] = {}; 
long long int P[114514] = {}; 
long long int Q[114514] = {};
long long int H = 0, W = 0;  
for (int i = 0; i < N; ++i){
cin >> X[i];
}
for (int j = 0; j < M; ++j){
cin >> Y[j];
}
for (int i = 1; i < N; ++i){
P[i] = X[i] - X[i-1];
H = (H + (i * (N-i) * P[i]) % 1000000007) % 1000000007; 
}
for (int j = 1; j < M; ++j){
Q[j] = Y[j] - Y[j-1];
W = (W + (j * (M-j) * Q[j]) % 1000000007) % 1000000007; 
}
cout << (H * W) % 1000000007 << endl; 
}

Submission Info

Judge Result