Submission #528253

#	Time	Username	Problem	Language	Result	Execution time	Memory
528253		meperdonas203	Traffic (IOI10_traffic)	C++17	Compilation error	0 ms	0 KiB

traffic

#include "traffic.h"
#include <bits/stdc++.h>
int sub[1000005];
vector<int>grafo[1000005];
int padres[1000005];
int dfs(int nodo,int padre,int arre[]){
   sub[i]+=arre[nodo];
   padres[nodo]=padre;
   for(auto x:grafo[nodo]){
      if(x!=padre){
         sub[i]+=dfs(x,nodo,arre);
      }
   }
   return sub[i];
}
int LocateCentre(int N, int pp[], int S[], int D[]) {
   dfs(0,-1,pp);
   for(int i=0;i<N-1;i++){
      grafo[S[i]].push_back(D[i]);
      grafo[D[i]].push_back(S[i]);
   }
   int ans=-1;
   int ans_res=INT_MAX;
   for(int i=0;i<N;i++){
      int res=sub[0]-sub[i];
      for(int x:grafo[i]){
         if(x!=padres[i])res=max(res,sub[x]);
      }
      if(res<=ans_res){
         ans=i;
         ans_res=res;
      }
   }
   return ans;
}

Compilation message (stderr)

traffic.cpp:4:1: error: 'vector' does not name a type
    4 | vector<int>grafo[1000005];
      | ^~~~~~
traffic.cpp: In function 'int dfs(int, int, int*)':
traffic.cpp:7:8: error: 'i' was not declared in this scope
    7 |    sub[i]+=arre[nodo];
      |        ^
traffic.cpp:9:15: error: 'grafo' was not declared in this scope
    9 |    for(auto x:grafo[nodo]){
      |               ^~~~~
traffic.cpp: In function 'int LocateCentre(int, int*, int*, int*)':
traffic.cpp:19:7: error: 'grafo' was not declared in this scope
   19 |       grafo[S[i]].push_back(D[i]);
      |       ^~~~~
traffic.cpp:26:17: error: 'grafo' was not declared in this scope
   26 |       for(int x:grafo[i]){
      |                 ^~~~~
traffic.cpp:27:30: error: 'max' was not declared in this scope; did you mean 'std::max'?
   27 |          if(x!=padres[i])res=max(res,sub[x]);
      |                              ^~~
      |                              std::max
In file included from /usr/include/c++/10/algorithm:62,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from traffic.cpp:2:
/usr/include/c++/10/bits/stl_algo.h:3486:5: note: 'std::max' declared here
 3486 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~