oj.uz

답안 #976491

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
976491 2024-05-06T15:34:49 Z suhu88 Trol (COCI19_trol) C++14
50 / 50
 1 ms 504 KB 
#include<bits/stdc++.h>
#define suhu ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define fi first
#define se second
#define pb push_back
using namespace std;
typedef long long ll;
const ll MAXN=2505;
const ll mod=1e9+7;
ll n;
int main(){
	suhu
	cin>>n;
	while(n--){
		ll ans=0;
		ll l,r;cin>>l>>r;
		
		ll a1=r/9*45;
		for(int i=1;i<=r%9;i++){
			a1+=i;
		}
		
		ll a2=(l-1)/9*45;
		for(int i=1;i<=(l-1)%9;i++){
			a2+=i;
		}	
		cout<<a1-a2<<"\n";
	}
	return 0;
}

Compilation message

trol.cpp: In function 'int main()':
trol.cpp:15:6: warning: unused variable 'ans' [-Wunused-variable]
   15 |   ll ans=0;
      |      ^~~

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 1 ms 504 KB Output is correct