| # | Time | Username | Problem | Language | Result | Execution time | Memory | 
|---|---|---|---|---|---|---|---|
| 976633 | vjudge1 | Trol (COCI19_trol) | C++17 | 1 ms | 348 KiB | 
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <iostream>
#include <cmath>
using namespace std;
const int SUM = 45;
int main() {
    int q;
    unsigned long long l, r, a, b;
    unsigned long long ans;
    cin >> q;
    while (q--) {
        cin >> l >> r;
        if (l == r) {
            cout << (l % 9 ? l % 9 : 9) << '\n';
            continue;
        }
        a = floor((l - 1)/9.0);
        b = floor((r - 1)/9.0);
        ans = SUM * (b - a);
        a = l%9 ? l%9 : 9;
        b = r%9 ? r%9 : 9;
        ans -= (a)*(a - 1) / 2;
        ans += (b)*(b + 1) / 2;
        cout << ans << '\n';
    }
}
| # | Verdict | Execution time | Memory | Grader output | 
|---|---|---|---|---|
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