oj.uz

답안 #951994

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
951994 2024-03-23T03:32:03 Z vjudge1 Museum (CEOI17_museum) C++17
0 / 100
 20 ms 28508 KB 
#include<bits/stdc++.h>
using namespace std;
const int MAXN=10005;
int n,m,x,son[MAXN],dp[MAXN][MAXN];
struct node{int to,cost;};
vector<node>g[MAXN];
void dfs(int u,int fa){
	for(auto i:g[u]){
		int v=i.to;
		if(v==fa) continue;
		dfs(v,u);son[u]+=son[v]+1;
		for(int j=min(m-1,son[u]);j>=0;j--)
			for(int k=min(j-1,son[v]);k>=0;k--)
				dp[u][j]=max(dp[u][j],dp[u][j-k-1]+dp[v][k]+i.cost);
	}
}
int main(){
    scanf("%d%d%d",&n,&m,&x);
    for(int i=1;i<=n-1;i++){
    	int u,v,c;scanf("%d%d%d",&u,&v,&c);
    	g[u].push_back({v,c});
    	g[v].push_back({u,c});
	}
	dfs(x,0);
	printf("%d",dp[x][m-1]);
	return 0;;
}

Compilation message

museum.cpp: In function 'int main()':
museum.cpp:18:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     scanf("%d%d%d",&n,&m,&x);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
museum.cpp:20:21: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |      int u,v,c;scanf("%d%d%d",&u,&v,&c);
      |                ~~~~~^~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2652 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 28508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 20 ms 28508 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 1 ms 2652 KB Output isn't correct
2 Halted 0 ms 0 KB -