제출 #83092

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
83092		osmanorhan	Bosses (BOI16_bosses)	C++17	0 / 100	255 ms	263168 KiB

bosses

#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include <cmath>
#include <climits>
#include <algorithm>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <cassert>
#include <vector>
#define all(x) x.begin() , x.end()
#define fi first
#define se second
#define pb push_back
#define umax( x , y ) x = max( x , (y) )
#define umin( x , y ) x = min( x , (y) )
#define null NULL
#define ort (b+s)/2

using namespace std;

typedef long long Lint;
typedef long double db;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef pair<db,db> dd;
typedef pair<int,string> is;

const int maxn = 1500020;
const int maxx = 1500000;
const int MOd = 998244353;

int a;
int dad[maxn], cur;
vector<int> w[maxn];

int dfs( int n ) {
	for(int i=0;i<w[n].size();i++)
		if( dad[ w[n][i] ] ) dad[ w[n][i] ] = n;
	int ret = 1;
	for(int i=0;i<w[n].size();i++)
		ret += dfs( w[n][i] );
	cur += ret;
	return ret;
}

int main(  ) {

	scanf("%d",&a);
	for(int i=1,k;i<=a;i++) {
		scanf("%d",&k);
		for(int j=0,t;j<k;j++) {
			scanf("%d",&t);
			w[t].pb( i );
		}
	}
	int ans = 0;
	for(int i=1;i<=a;i++) {
		memset( dad, 0, sizeof( dad ) );
		cur = 0;dfs( i );
		umax( ans, cur );
	}
	cout << ans << endl;
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

bosses.cpp: In function 'int dfs(int)':
bosses.cpp:42:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<w[n].size();i++)
              ~^~~~~~~~~~~~
bosses.cpp:45:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<w[n].size();i++)
              ~^~~~~~~~~~~~
bosses.cpp: In function 'int main()':
bosses.cpp:53:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&a);
  ~~~~~^~~~~~~~~
bosses.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&k);
   ~~~~~^~~~~~~~~
bosses.cpp:57:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%d",&t);
    ~~~~~^~~~~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 45
• Subtask 3: 0 / 33