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  1. #pragma GCC optimize ("Ofast")
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. #define main dummy_main
  5. int main(){
  6.   return 0;
  7. }
  8. #undef main
  9. class Solution{
  10.   public:
  11.   int smallestCommonElement(vector<vector<int>>& A){
  12.     int i;
  13.     int x;
  14.     int y;
  15.     map<int,int> mp;
  16.     x = A.size();
  17.     y = A[0].size();
  18.     for(i=(0);i<(x);i++){
  19.       int j;
  20.       for(j=(0);j<(y);j++){
  21.         if(j && A[i][j] == A[i][j-1]){
  22.           continue;
  23.         }
  24.         if(++mp[A[i][j]] == x){
  25.           return A[i][j];
  26.         }
  27.       }
  28.     }
  29.     return -1;
  30.   }
  31. }
  32. ;
  33. // cLay varsion 20190921-1
  34.  
  35. // --- original code ---
  36. // #define main dummy_main
  37. // {}
  38. // #undef main
  39. // 
  40. // class Solution {
  41. // public:
  42. //   int smallestCommonElement(vector<vector<int>>& A) {
  43. //     int x, y;
  44. //     map<int,int> mp;
  45. //     x = A.size();
  46. //     y = A[0].size();
  47. //     rep(i,x) rep(j,y){
  48. //       if(j && A[i][j] == A[i][j-1]) continue;
  49. //       if(++mp[A[i][j]] == x) return A[i][j];
  50. //     }
  51. //     return -1;
  52. //   }
  53. // };
  54.  
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/rzy24z
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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