oj.uz

답안 #1084401

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1084401 2024-09-06T08:06:10 Z laure Trol (COCI19_trol) C++17
50 / 50
 1 ms 424 KB 
#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
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 424 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 384 KB Output is correct