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Submission #400308

# Submission time Handle Problem Language Result Execution time Memory
400308 2021-05-07T20:39:35 Z Pichon5 Traffic (IOI10_traffic) C++17
0 / 100
 3 ms 2636 KB 
#include<bits/stdc++.h>
#include "traffic.h"
#define pb push_back
#define vi vector<int>
#define ll long long
using namespace std;
const int tam=1e5;
vector<int> G[tam];
ll peso[tam];
ll tot[tam];//suma de todos sus hijos
ll dp[tam];//maximo de sus hijos
ll sum=0;
int ind;
ll mi=1e18;
void dfs(int nodo, int p){
    for(int i=0;i<G[nodo].size();i++){
        int it=G[nodo][i];
        if(it==p)continue;
        dfs(it,nodo);
        tot[nodo]+=tot[it];
        dp[nodo]=max(dp[nodo],tot[nodo]);
    }
    ll aux=max(dp[nodo],sum-tot[nodo]);
    if(aux<mi){
        ind=nodo;
        mi=aux;
    }
}
int LocateCentre(int N, int pp[], int S[], int D[]) {
    for(int i=0;i<N;i++){
        peso[i]=pp[i];sum+=pp[i];tot[i]=peso[i];
    }
    for(int i=0;i<N-1;i++){
        int a=S[i],b=D[i];
        G[a].pb(b);G[b].pb(a);
        //cout<<a<<"  unido "<<b<<endl;
    }
    dfs(0,-1);
    return ind;
}

Compilation message

traffic.cpp: In function 'void dfs(int, int)':
traffic.cpp:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=0;i<G[nodo].size();i++){
      |                 ~^~~~~~~~~~~~~~~

Subtask #1
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Incorrect 3 ms 2636 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Incorrect 3 ms 2636 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Incorrect 3 ms 2636 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Incorrect 3 ms 2636 KB Output isn't correct
5 Halted 0 ms 0 KB -