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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. // this  adds the key value pair in map instead of updating it, dont know how to overcome this???
  4. struct f{
  5. 	bool  operator()( int a,  int b){
  6. 		return a<b;
  7. 	}
  8. };
  9. int main() {
  10. 	map<int,int,f> m;
  11. 	m[1]=2;
  12. 	m[2]=1;
  13. 	m[6]=1;
  14. 	m[3]=4;
  15. 	m[6]=34;
  16. 	m[3]=5;
  17. 	cout<<m.size()<<"\n";
  18. 	for(auto x: m) cout<<x.first<<" "<<x.second<<"\n";
  19. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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4
1 2
2 1
3 5
6 34
https://ideone.com/0POMaG
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
secret

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