제출 #1084401

#제출 시각아이디문제언어결과실행 시간메모리
1084401laureTrol (COCI19_trol)C++17
50 / 50
1 ms424 KiB
#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';
    }
}
#Verdict Execution timeMemoryGrader output
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