제출 #559261

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
559261		M_W	Safety (NOI18_safety)	C++14	100 / 100	56 ms	5388 KiB

safety

#include <bits/stdc++.h>
using namespace std;
int main(){
	long long N, H;
	scanf("%lld %lld", &N, &H);
	
	long long ymin = 0, shift = 0;
	priority_queue<long long> L;
	priority_queue<long long, vector<long long>, greater<long long>> R;
	
	long long x;
	scanf("%lld", &x);
	L.push(x); R.push(x);
	for(long long i = 1; i < N; i++){
		scanf("%lld", &x);
		shift += H;
		
		long long left = L.top() - shift;
		long long right = R.top() + shift;
		if(x < left){
			ymin += abs(left - x);
			R.push(left - shift);
			L.pop();
			
			L.push(x + shift);
			L.push(x + shift);
		}
		else if(x > right){
			ymin += abs(right - x);
			L.push(right + shift);
			R.pop();
			
			R.push(x - shift);
			R.push(x - shift);
		}
		else{
			L.push(x + shift);
			R.push(x - shift);
		}
	}
	printf("%lld", ymin);
}

컴파일 시 표준 에러 (stderr) 메시지

safety.cpp: In function 'int main()':
safety.cpp:5:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 |  scanf("%lld %lld", &N, &H);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~
safety.cpp:12:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  scanf("%lld", &x);
      |  ~~~~~^~~~~~~~~~~~
safety.cpp:15:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |   scanf("%lld", &x);
      |   ~~~~~^~~~~~~~~~~~

• Subtask 1: 3 / 3
• Subtask 2: 4 / 4
• Subtask 3: 9 / 9
• Subtask 4: 5 / 5
• Subtask 5: 6 / 6
• Subtask 6: 11 / 11
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• Subtask 8: 22 / 22
• Subtask 9: 29 / 29