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답안 #976352

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
976352 2024-05-06T13:05:56 Z vjudge1 Trol (COCI19_trol) C++17
50 / 50
 1 ms 348 KB 
#include<bits/stdc++.h>
#define int long long
using namespace std;

void solve() {
	int l,r; cin >> l >> r;
	int ans=0;
	//dua kasus karena aku tolol
	//kasus 1;
	if(r<=l+(9-l%9)) {
		int begin=l%9;
		if (begin==0) ans+=9;
		for(int i=l;i<=r;i++){
			ans+=begin;
			begin++;
		}
	}
	else {
		int fir=l+10-l%9;
		int las=r-r%9;
		ans+=(las-fir+1)*5;
		for(int i=fir-1;i>=l;i--) {
			ans+=i%9;
			if(i%9==0) ans+=9;
		}
		for(int i=las+1;i<=r;i++) {
			ans+=i%9;
			if(i%9==0) ans+=9;
		}
	}
	cout<<ans<<endl;
}

signed main () {
	int tc; cin>>tc;
	while(tc--) solve();
}

Subtask #1
50.0 / 50.0

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