Submission #1084401

#	Time	Username	Problem	Language	Result	Execution time	Memory
1084401		laure	Trol (COCI19_trol)	C++17	50 / 50	1 ms	424 KiB

trol

#include<bits/stdc++.h>
#define int long long
using namespace std;
const int mod=1e9+7;
signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int q;
    cin>>q;
    while(q--)
    {
        int l,r,ans=0;
        cin>>l>>r;
        int x=l;
        while(x/10!=0)
        {
            int y=x;
            x=0;
            while(y>0)
            {
                x+=y%10;
                y/=10;
            }
        }
        int z=r;
        while(z/10!=0)
        {
            int y=z;
            z=0;
            while(y>0)
            {
                z+=y%10;
                y/=10;
            }
        }
        ans=((r-l-(9-x)-z)/9)*45;
        ans+=45-(x*(x-1))/2;
        ans+=(z*(z+1))/2;
        cout<<ans<<'\n';
    }
}

• Subtask 1: 50 / 50