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  1. #include<bits/stdc++.h>
  2.  
  3. using namespace std;
  4. set<int>f[7];
  5. set<int>::iterator it;
  6. set<int>::iterator ite;
  7. int main(){
  8. 	int n,m,i,a,b,ans = 0;
  9. 	cin >> n >> m;
  10. 	for(i = 1;i <= n;i++){
  11. 		cin >> a >> b;
  12. 		for(ite = f[a].begin();ite != f[a].end();ite++){
  13. 		}
  14. 		if(f[a].empty() == true){
  15. 			ans++;
  16. 			f[a].insert(b);
  17. 			continue;
  18. 		}
  19. 		if(*f[a].end() < b){
  20. 			if(b == 4) cout << *ite << b << endl << endl << endl;
  21. 			f[a].insert(b);
  22. 			ans++;
  23. 			continue;
  24. 		}
  25. 		if(*it == b){
  26. 			if(b == 4) cout << *it << endl << endl << endl << endl;
  27. 			continue;
  28. 		}
  29. 		it = f[a].upper_bound(b);
  30. 		cout << *it;
  31. 		for(ite = f[a].end();ite != it;ite--){
  32. 			f[a].erase(ite);
  33. 			ans++;
  34. 		}
  35. 		f[a].erase(it,f[a].end());
  36. 		if(f[a].empty() == true){
  37. 			ans++;
  38. 			f[a].insert(b);
  39. 			continue;
  40. 		}
  41. 		it = f[a].end();
  42. 		if(*it == b){
  43. 			continue;
  44. 		}
  45. 		ans++;
  46. 		f[a].insert(b);
  47. 	}
  48. 	cout << ans
  49. 	;
  50. }
Success #stdin #stdout 0s 5396KB
comments (?)
stdin
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7 15
1 5 
2 3 
2 5 
2 7 
2 4 
1 5 
1 3
stdout
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34


7
https://ideone.com/03IdXM
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
public

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