Submission #1821332

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Source Code Expand

int s,t[50]={},c=0;
int ans=0;
void dfs(int x){
  if(x==n){
    ans=max(ans,s);
    return;
  }
  if(n-c<=ans) return;
  dfs(x+1);
  {
    if(!t[x]){
      s++;
      for(int i=0;i<n;i++){
	if(e[x][i]){
	  if(!t[i]) c++;
	  t[i]++;
	}
      }      
      dfs(x+1);
      
      for(int i=0;i<n;i++){
	if(e[x][i]){
	  t[i]--;
	  if(!t[i]) c--;
	}
      }
      s--;
    }
  }
}
signed main(){
  cin>>n>>m;
  for(int i=0;i<m;i++){
    int a,b;
    cin>>a>>b;
    a--;b--;
    e[a][b]=e[b][a]=1;
  }
  dfs(0);
  cout<<ans<<endl;
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘void dfs(int)’:
./Main.cpp:4:9: error: ‘n’ was not declared in this scope
   if(x==n){
         ^
./Main.cpp:5:18: error: ‘max’ was not declared in this scope
     ans=max(ans,s);
                  ^
./Main.cpp:8:6: error: ‘n’ was not declared in this scope
   if(n-c<=ans) return;
      ^
./Main.cpp:13:21: error: ‘n’ was not declared in this scope
       for(int i=0;i<n;i++){
                     ^
./Main.cpp:14:5: error: ‘e’ was not declared in this scope
  if(e[x][i]){
     ^
./Main.cpp:21:21: error: ‘n’ was not declared in this scope
       for(int i=0;i<n;i++){
                     ^
./Main.cpp:22:5: error: ‘e’ was not declared in this scope
  if(e[x][i]){
     ^
./Main.cpp: In function ‘int main()’:
./Main.cpp:32:3: error: ‘cin’ was not declared in this scope
   cin>>n>>m;
   ^
./Main.cpp:32:8: error: ‘n’ was not declared in this scope
   cin>>n>>m;
        ^
./Main.cpp:32:11: error: ‘m’ was not declared in this scope
   cin>>n>>m;
           ^
./Main.cpp:37:5: error: ‘...