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Submission #163352

# Submission time Handle Problem Language Result Execution time Memory
163352 2019-11-12T18:53:28 Z dolphingarlic Trol (COCI19_trol) C++14
50 / 50
 3 ms 380 KB 
#include <bits/stdc++.h>
#define FOR(i, x, y) for (ll i = x; i < y; i++)
typedef long long ll;
using namespace std;

ll d(ll n) {
    return 45 * (n / 9) + (n % 9) * (n % 9 + 1) / 2;
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll q;
    cin >> q;
    while (q--) {
        ll a, b;
        cin >> a >> b;
        cout << d(b) - d(a - 1) << '\n';
    }
    return 0;
}

Subtask #1
50.0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 380 KB Output is correct
5 Correct 2 ms 376 KB Output is correct