Submission #887557

#TimeUsernameProblemLanguageResultExecution timeMemory
887557amirhoseinfar1385Cats or Dogs (JOI18_catdog)C++17
Compilation error
0 ms0 KiB
#include "catdog.h" #include<bits/stdc++.h> using namespace std; const int maxn=100000+10; vector<int>adj[maxn]; int val[maxn],n,inf=1e6+5; void pre(int u,int par=0){ int j=-1; for(int i=0;i<(int)adj[u].size();i++){ if(adj[u][i]!=par){ pre(adj[u][i],u); } else{ j=i; } } if(j>=0){ adj[u].erase(adj[u].begin()+j); } return ; } int res=0; pair<int,int>cal(int u){ pair<int,int>ret=make_pair(0,0); for(auto x:adj[u]){ pair<int,int>fr=cal(x); ret.first+=fr.first; ret.second+=fr.second; } int red=0,blue=0; if(val[u]==1){ res+=ret.second; return make_pair(1,0); } if(val[u]==2){ res+=ret.first; return make_pair(0,1); } res=min(res.first,res.second); if(ret.first==ret.second){ return make_pair(0,0); } if(ret.first>ret.second){ return make_pair(1,0); } return make_pair(0,1); } void initialize(int N, std::vector<int> A, std::vector<int> B) { n=N; for(int i=0;i<n-1;i++){ adj[A[i]].push_back(B[i]); adj[B[i]].push_back(A[i]); } pre(1); } int cat(int v) { res=0; val[v]=1; cal(1); return res; } int dog(int v){ res=0; val[v]=2; cal(1); return res; } int neighbor(int v) { res=0; val[v]=0; cal(1); return res; }

Compilation message (stderr)

catdog.cpp: In function 'std::pair<int, int> cal(int)':
catdog.cpp:40:17: error: request for member 'first' in 'res', which is of non-class type 'int'
   40 |     res=min(res.first,res.second);
      |                 ^~~~~
catdog.cpp:40:27: error: request for member 'second' in 'res', which is of non-class type 'int'
   40 |     res=min(res.first,res.second);
      |                           ^~~~~~
catdog.cpp:31:9: warning: unused variable 'red' [-Wunused-variable]
   31 |     int red=0,blue=0;
      |         ^~~
catdog.cpp:31:15: warning: unused variable 'blue' [-Wunused-variable]
   31 |     int red=0,blue=0;
      |               ^~~~