Submission #409885

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
409885	2021-05-21 18:01:51	fadi57	자매 도시 (APIO20_swap)	C++14	Compilation error	0 ms	0 KiB

swap

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#include "swap.h"
#include "grader.cpp"
#include<bits/stdc++.h>
using namespace std;
const int mx=2e5+10;
typedef long long ll;
int inf=1e9+10;
const int mod=1e9+7;
vector<pair<int,int>>adj[mx];
int ans=-1;
int n,m;
int block[mx];
int arr[mx];
int ok;
vector<pair<int,pair<int,int>>>edges;
void init(int N, int M,std::vector<int> U, std::vector<int> V, std::vector<int> W) {
    n=N;m=M;
    for(int i=0;i<M;i++){
            if(U[i]){ok=1;}
            arr[V[i]]=W[i];
            edges.push_back({W[i],{U[i],V[i]}});
        adj[U[i]].push_back({V[i],W[i]});
          adj[V[i]].push_back({U[i],W[i]});
    }
for(auto it:W){
    ans=max(ans,it);
}
  for(int i=0;i<N;i++){
       if(adj[i].size()!=2){
        ans=-1;
 
 
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Compilation message (stderr)

swap.cpp: In function 'int dfs(int, int)':
swap.cpp:51:1: warning: no return statement in function returning non-void [-Wreturn-type]
   51 | }
      | ^
/usr/bin/ld: /tmp/cc1YmhlB.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccj6IOpz.o:swap.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status