Submission #1266437

#	Time	Username	Problem	Language	Result	Execution time	Memory
1266437		canhnam357	Trol (COCI19_trol)	C++20	50 / 50	1 ms	324 KiB

trol

#include <bits/stdc++.h>
using namespace std;
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int q;
    cin >> q;
    while (q--) {
        long long l, r;
        cin >> l >> r;
        auto f = [&](long long n) {
            int ans = 0;
            while (n % 9) {
                ans += n % 9;
                n--;
            }
            return ans + n * 5;
        };
        cout << f(r) - f(l - 1) << '\n';
    }
    return 0;
}   

• Subtask 1: 50 / 50