Submission #219978

#	Time	Username	Problem	Language	Result	Execution time	Memory
219978		Pbezz	Trol (COCI19_trol)	C++14	50 / 50	5 ms	384 KiB

trol

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define INF 1e5+5
typedef pair<int, int> pii;
int main(){

	ll int q,i,k,ans,l,r,cas=45;
	cin>>q;
	while(q--){
	cin>>l>>r;

	k=r-l;
	k/=9;
	ans=cas*k;

	l%=9;
	r%=9; if(r<l)r+=9;

	for(i=l;i<=r;i++){

	ans+=(i%9);

	if(i%9==0)ans+=9;
}
cout <<ans<<'\n';



//1998 2918
}







return 0;
}

• Subtask 1: 50 / 50