Submission #976139

#TimeUsernameProblemLanguageResultExecution timeMemory
976139vjudge1Trol (COCI19_trol)C++17
20 / 50
1095 ms348 KiB
#include<bits/stdc++.h>
using namespace std;

int main(){
	int q,l,r,count;
	cin>>q;

	while(q--){
		count=0;
		cin>>l>>r;
		for(int i = l; i <=r; i++){
			if(i % 9 == 0) count += 9;
			else count += (i % 9);
		}
		cout<<count<<endl;
	}
}
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