Submission #1366663

#	Time	Username	Problem	Language	Result	Execution time	Memory
1366663		djsksbrbf	September (APIO24_september)	C++20	Compilation error	0 ms	0 KiB

september

#include <cassert>
#include <cstdio>
#include <vector>
#include <bits/stdc++.h>

#include <vector>
using namespace std;

bool vis[20004];
int cnt[20005];
set <int> s;
vector <int> adj[20005];
void dfs(int cur, int par){
   s.insert(cur);
   
   for(auto it : adj[cur]){
      if(it == par)continue;
      dfs(it, cur);
   }
}
typedef pair <int, int> pii;
int solve(int N, int M, std::vector<int> F, std::vector<std::vector<int>> S) {
   for(int i = 1 ; i < N ; i++)adj[F[i]].push_back(i);
   int ans = 0, day = 0;
   while(day < N - 1){
      do{
         for(int i = 0 ; i < M ; i++){
            cnt[S[i][day]]++;
            dfs(S[i][day], S[i][day]);
            
            if(cnt[S[i][day]] == M)s.erase(S[i][day]);
         }
         day++;
      }while(s.size());
      ans++;
   }
   s.clear();
   for(int i = 0 ; i < N ; i++){
      adj[i].clear();
      vis[i] = 0;
      cnt[i] = 0;
   }
   return ans;
}

void taskcase() {
   int N, M;
   assert(2 == scanf("%d%d", &N, &M));
   
   std::vector<int> F(N);
   F[0] = -1;
   for (int i = 1; i < N; ++i)
      assert(1 == scanf("%d", &F[i]));
   
   std::vector<std::vector<int>> S(M, std::vector<int>(N - 1));
   for (int i = 0; i < M; ++i)
      for (int j = 0; j < N - 1; ++j)
         assert(1 == scanf("%d", &S[i][j]));
   
   printf("%d\n", solve(N, M, F, S));
}

int main() {
   int T;
   assert(1 == scanf("%d", &T));
   while(T--) taskcase();
   return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccMjGBNX.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc6nnwGY.o:september.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status