Submission #1253174

#	Time	Username	Problem	Language	Result	Execution time	Memory
1253174		dreamnguyen	World Map (IOI25_worldmap)	C++20	Compilation error	0 ms	0 KiB

worldmap

#include <bits/stdc++.h>
#define FOR(i,a,b) for(int i = a; i<b; i++)
std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> A, std::vector<int> B) {
    if(M=N*(N-1)/2){
      int K = 2 * N;
      std::vector<std::vector<int>> grid(K, std::vector<int>(K, 0));
      int color = 1;
  
      for (int i = 0; i < N; ++i) {
          grid[i][i] = i + 1;
      }
  
      int x = 0, y = N;
      for (int i = 0; i < M; ++i) {
          if (x + 1 >= K) {
              x = 0;
              ++y;
              if (y + 1 >= K) break;
          }
          grid[x][y] = A[i];
          grid[x + 1][y] = B[i];
          x += 2;
      }
  
      return grid;
    }
    else{
      std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> A, std::vector<int> B) {
      	std::vector<std::vector<int>> ans(N, std::vector<int>(N));
      	FOR(i,0,N) {
      		FOR(j,0,N) {
      			ans[i][j] = i+1;
      		}
      	}
      	return ans;
}
    }
}

Compilation message (stderr)

worldmap.cpp: In function 'std::vector<std::vector<int> > create_map(int, int, std::vector<int>, std::vector<int>)':
worldmap.cpp:28:102: error: a function-definition is not allowed here before '{' token
   28 |       std::vector<std::vector<int>> create_map(int N, int M, std::vector<int> A, std::vector<int> B) {
      |                                                                                                      ^
worldmap.cpp:38:1: warning: control reaches end of non-void function [-Wreturn-type]
   38 | }
      | ^