Submission #976647

#	Time	Username	Problem	Language	Result	Execution time	Memory
976647		vjudge1	Trol (COCI19_trol)	C++17	10 / 50	1 ms	348 KiB

trol

#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 jarak=(R-L+1);
        ll ans=(jarak/9)*45;
        ll sisa=jarak%9;
        ll start=L%9;
        if(start==0){
            start=9;
        }
        while(sisa--){
            ans+=start;
            start++;
        }
        cout<<ans<<endl;
    }
}

• Subtask 1: 10 / 50