Submission #978348

#TimeUsernameProblemLanguageResultExecution timeMemory
978348vjudge1Trol (COCI19_trol)C++17
0 / 50
1094 ms604 KiB
#include<bits/stdc++.h>
#define ll long long
#define endl '\n'

using namespace std;

int main(){
    int q; cin>>q;
    while(q--){
        string l, r; cin>>l>>r;
        ll m = stoi(l), n = stoi(r), sum=0;
        for(int i=m;i<=n;i++){
            sum+=(i%9);
        }
        cout<<sum<<endl;
    }

    return 0;
}
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