제출 #427262

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
427262		model_code	Counterspells (CPSPC17_counterspells)	C++17	40 / 100	2094 ms	9832 KiB

Main

#include <bits/stdc++.h>
using namespace std;

#define inf 1023456789
#define linf 1023456789123456789ll
#define pii pair<int,int>
#define pipii pair<int, pii >
#define pll pair<long long,long long>
#define vint vector<int>
#define vvint vector<vint >
#define ll long long
#define pdd pair<double, double>

#define DEBUG
#ifdef DEBUG
#define db(x) cerr << #x << " = " << x << endl
#else
#define db(x)
#endif

int main()
{
	int n;
	scanf("%d", &n);
	vvint son(1);
	vint parent(1, -1);
	vector<bool> active(1, true);
	for(int i=1; i<=n; i++)
	{
		int p;
		scanf("%d", &p);
		parent.push_back(p);
		son.push_back(vint(0));
		active.push_back(true);
		son[p].push_back(i);
		int count = 0;
		for(int cur = parent[i]; cur != -1; cur = parent[cur])
		{
			bool old = active[cur];
			active[cur] = true;
			for(int j=0; j<son[cur].size(); j++)
			{
				if(active[son[cur][j]])
				{
					active[cur] = false;
					break;
				}
			}
			if(active[cur] != old)count++;
			else break;
		}
		printf("%d\n", count);
	}
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:41:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |    for(int j=0; j<son[cur].size(); j++)
      |                 ~^~~~~~~~~~~~~~~~
Main.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |  scanf("%d", &n);
      |  ~~~~~^~~~~~~~~~
Main.cpp:31:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |   scanf("%d", &p);
      |   ~~~~~^~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20