Submission #936804

#	Time	Username	Problem	Language	Result	Execution time	Memory
936804		Faissel	Trol (COCI19_trol)	C++17	40 / 50	1 ms	348 KiB

trol

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl '\n'
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int q;
    cin >> q;
    while (q--)
    {
        ll l, r;
        cin >> l >> r;
        if(r - l < 500){
            ll ans =0;
            for(int i=l;i<=r;i++){
                ans += (i%9 == 0 ? 9 : i%9);
            }
            cout << ans << endl;
        }
        else{
        int y = l % 9;
        if (y == 0)y = 9;
        int u = (9 - y) + 1;
        ll sum = 0;
        for (int i = y; i <= 9; i++)
        {
            sum += i;
        }
        sum += 45 * ((((r - l) + 1) - u) / 9);
        y = r % 9;
        for(int i=1;i<=y;i++)sum += i;
        cout << sum << endl;
        }
    }
    return 0;
}

• Subtask 1: 40 / 50