제출 #102117

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
102117		jwvg0425	스파이 (JOI13_spy)	C++17	30 / 100	2069 ms	219908 KiB

spy

#include <stdio.h>
#include <vector>
#include <queue>
#include <algorithm>
#include <iostream>
#include <string>
#include <bitset>
#include <map>
#include <set>
#include <tuple>
#include <string.h>
#include <math.h>
#include <random>
#include <functional>
#include <assert.h>
#include <math.h>
#include <iterator>
#include <chrono>
#define all(x) (x).begin(), (x).end()
#define xx first
#define yy second

using namespace std;

using i64 = long long int;
using ii = pair<int, int>;
using ii64 = pair<i64, i64>;
using vi = vector<long long int>;

int iparent[2005];
int jparent[2005];
vector<int> ichild[2005];
vector<int> jchild[2005];
vector<int> iteams[2005];
vector<int> jteams[2005];
int iroot;
int jroot;

void idfs(int root, int team)
{
	iteams[root].push_back(team);

	for (auto& c : ichild[root])
		idfs(c, team);
}

void jdfs(int root, int team)
{
	jteams[root].push_back(team);

	for (auto& c : jchild[root])
		jdfs(c, team);
}

int main()
{
	int n, m;
	scanf("%d %d", &n, &m);

	for (int i = 1; i <= n; i++)
	{
		int p, q;
		scanf("%d %d", &p, &q);

		jparent[i] = p;
		jchild[p].push_back(i);

		iparent[i] = q;
		ichild[q].push_back(i);

		if (jparent[i] == 0)
			jroot = i;

		if (iparent[i] == 0)
			iroot = i;
	}

	for (int i = 1; i <= m; i++)
	{
		int r, s;
		scanf("%d %d", &r, &s);

		jdfs(r, i);
		idfs(s, i);
	}

	for (int i = 1; i <= n; i++)
	{
		sort(all(jteams[i]));

		int c = 0;

		for (auto& it : iteams[i])
		{
			if (binary_search(all(jteams[i]), it))
				c++;
		}

		printf("%d\n", c);
	}

	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

spy.cpp: In function 'int main()':
spy.cpp:58:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
spy.cpp:63:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &p, &q);
   ~~~~~^~~~~~~~~~~~~~~~~
spy.cpp:81:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &r, &s);
   ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 70