# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
250583 | 2020-07-18T12:47:16 Z | REALITYNB | Trol (COCI19_trol) | C++14 | 0 ms | 0 KB |
#include <bits/stdc++.h> #define endl '\n' using namespace std ; int countt(int x ){ int sum = 0 ; while(x){ sum += x%10 ; x/=10 ; } if(sum<10) return sum return countt(sum) ; return sum ; } int main(){ int q ; cin>> q ; while(q--){ int l ,r ; cin>>l>>r ; int sum = 0 ; for(int i=l;i<=r;i++){ sum += countt(i) ; } cout << sum << endl ; } return 0 ; }