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  1. #pragma GCC optimize("Ofast")
  2. #pragma GCC optimize("unroll-loops")
  3. #pragma GCC optimize("inline")
  4. #include<bits/stdc++.h>
  5. using namespace std;
  6. #define main dummy_main
  7. int main(){
  8.   return 0;
  9. }
  10. #undef main
  11. class Solution{
  12.   public:
  13.   vector<vector<int>> construct2DArray(vector<int>& A, int m, int n){
  14.     int i;
  15.     if(A.size() != m*n){
  16.       return vector<vector<int>>();
  17.     }
  18.     vector<vector<int>> res(m,vector<int>(n));
  19.     for(i=(0);i<(m);i++){
  20.       int j;
  21.       for(j=(0);j<(n);j++){
  22.         res[i][j] = A[i*n+j];
  23.       }
  24.     }
  25.     return res;
  26.   }
  27. }
  28. ;
  29. // cLay version 20210926-1
  30.  
  31. // --- original code ---
  32. // #define main dummy_main
  33. // {}
  34. // #undef main
  35. // 
  36. // class Solution {
  37. // public:
  38. //   VVI construct2DArray(VI& A, int m, int n) {
  39. //     if(A.size() != m*n) return VVI();
  40. //     VVI res(m,VI(n));
  41. //     rep(i,m) rep(j,n) res[i][j] = A[i*n+j];
  42. //     return res;
  43. //   }
  44. // };
  45.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/QuqITH
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
secret

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