제출 #919161

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
919161		TIN	Baloni (COCI15_baloni)	C++17	0 / 100	51 ms	12888 KiB

baloni

#include <bits/stdc++.h>

using namespace std;

#define FNAME "test"

const int N = 1e6 + 5;

int n;
int h[N], pre[N], p[N];
bool b[N];

void Task() {
	ios_base::sync_with_stdio(false);
	cin.tie(0); cout.tie(0);
	cout << fixed << setprecision(9);
	if (fopen(FNAME".inp","r")) {
		freopen(FNAME".inp","r",stdin);
		freopen(FNAME".out","w",stdout);
	}
}

void Solve() {
	//Your Code
	cin >> n;
	for (int i = 1; i <= n; i++) cin >> h[i];
	memset(p, 0, sizeof(p));
	memset(pre, 0, sizeof(pre));
	memset(b, true, sizeof(b));
	for (int i = 1; i <= n; i++) {
		if (b[pre[h[i] + 1]]) {
			p[i] = pre[h[i] + 1];
			b[pre[h[i] + 1]] = false;
		}
		pre[h[i]] = i;
	}
	int res = 0;
	for (int i = 1; i <= n; i++) res += (p[i] == 0);
	cout << res << '\n';
}

int main() {
	Task();
	Solve();
	cerr << "\nTime run: " << 1000*clock()/CLOCKS_PER_SEC << "ms";
	return 37^37;
}

컴파일 시 표준 에러 (stderr) 메시지

baloni.cpp: In function 'void Task()':
baloni.cpp:18:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |   freopen(FNAME".inp","r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
baloni.cpp:19:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |   freopen(FNAME".out","w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

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