Submission #936791

#	Time	Username	Problem	Language	Result	Execution time	Memory
936791		Faissel	Trol (COCI19_trol)	C++17	30 / 50	0 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;
        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: 30 / 50