View Code of Problem 5

#include<iostream>
#include<vector>
using namespace std;
typedef struct{
  int index, a, b;
}Box;
int main(){
  int all;
  cin >> all;
  
  for(int t = 0;t < all;t ++){
    int n, m;
    cin >> n >> m;
    vector<Box> box;
    for(int j = 0;j < n;j ++){
      Box temp;
      temp.index = j + 1;
      cin >> temp.a >> temp.b;
      box.push_back(temp);
    }
    
    for(int j = 0;j < n;j ++){
      for(int k = j;k < n;k ++){
        if(box[k].b < box[k + 1].b){
          Box temp = box[k];
          box[k] = box[k + 1];
          box[k + 1] = temp;
        }
      }
    }
    for(int j = 0;j < n;j ++){
      for(int k = j;k < n;k ++){
        if(box[k].a < box[k + 1].a){
          Box temp = box[k];
          box[k] = box[k + 1];
          box[k + 1] = temp;
        }
      }
    }
     
    for(int j = 0;j < m - 1;j ++){
        cout << box[j].index << " ";
    }
    cout << box[j].index << endl;
  }
}
/*
Main.cc: In function 'int main()':
Main.cc:44:17: error: 'j' was not declared in this scope
     cout << box[j].index << endl;
                 ^
*/