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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define ll long long
  4.  
  5. ll n,x,y,b[3000000],c=0,t;
  6. bool m=false;
  7. vector<pair<ll,ll>>a;
  8. int main() {
  9. 	cin>>n>>t;
  10. 	for(int i=1;i<=n;i++){
  11. 		cin>>x>>y;
  12. 		if(x>y){
  13. 			a.push_back(make_pair(y,x));
  14. 			m=true;
  15. 		}
  16. 		c=max(c,x);
  17. 	}
  18. 	sort(a.begin(),a.end());
  19. 	if(m)	t+=(c-a[0].first)*2;
  20. 	cout<<t;
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin 
2 533969263
279488210 145660682
473285129 386724188
stdout 
1189218157
https://ideone.com/7BoQMi
language:
C++14 (gcc 8.3)
created:
11 days ago
visibility:
public

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