Kertotaulu

#include <iostream>
#include <algorithm>
#include <cmath>
#include <climits>
#include <cstdio>

using namespace std;

typedef signed long long int ll;
typedef unsigned long long int ull;

#define M (1000000007)

int main() {

    ll y1, x1, y2, x2;
    cin >> y1 >> x1 >> y2 >> x2;
    ll result = 0;
    for (ll r = y1; r <= y2; ++r) {
        for (ll c = x1; c <= x2; ++c) {
            result = ( result + (r*c)%M )%M;
        }
    }

    cout << result << endl;

    return 0;
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 1

Verdict: ACCEPTED

Test 3

Group: 1

Verdict: ACCEPTED

Test 4

Group: 1

Verdict: ACCEPTED

Test 5

Group: 1

Verdict: ACCEPTED

Test 6

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 11

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 13

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 3

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 3

Verdict: TIME LIMIT EXCEEDED