Submission #232632

#	Time	Username	Problem	Language	Result	Execution time	Memory
232632		crossing0ver	Traffic (IOI10_traffic)	C++17	0 / 100	18 ms	23936 KiB

traffic

#include<bits/stdc++.h>
//#include "grader.h"
using namespace std; 
int dp[1000006], C[1000006] , tot; 
vector <int> adj[1000005];
void dfs(int v,int p) {
	dp[v] = 0;
	int s = 0;
	int r = 0;
	for (int i:adj[v]) {
		if (i != p) {
			dfs (i,v);
			dp[v] = max(dp[v], dp[i] + C[i]);
		}
	}
}

int LocateCentre(int n,int P[],int S[],int D[]) {
	  for (int i = 0; i < n-1; i++)
	  	adj[S[i]].push_back(D[i]),
	  	adj[D[i]].push_back(S[i]),
	  	C[i] = P[i], tot += C[i];
	pair<int,int> ans = {INT_MAX,-1};
	for (int i = 0; i < n; i++) {
		dfs(i,-1);
		ans = min(ans,{dp[i],i});
	}
	return ans.second;
}

Compilation message (stderr)

traffic.cpp: In function 'void dfs(int, int)':
traffic.cpp:8:6: warning: unused variable 's' [-Wunused-variable]
  int s = 0;
      ^
traffic.cpp:9:6: warning: unused variable 'r' [-Wunused-variable]
  int r = 0;
      ^

• Subtask 1: 0 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25