제출 #976646

#제출 시각아이디문제언어결과실행 시간메모리
976646vjudge1Trol (COCI19_trol)C++17
30 / 50
1067 ms348 KiB
#include<bits/stdc++.h>
#define ll long long
using namespace std;

int main(){
    ll q; cin>>q;
    for(ll i=1; i<=q; i++){
        ll L,R;
        cin>>L>>R;
        ll ans=0;
        for(ll i=L; i<=R; i++){
            if(i%9==0){
                ans+=9;
            }else{
                ans+=i%9;
            }
        }
        cout<<ans<<endl;
    }
}

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