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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long n, c, res = 0, num = 0; //num - количество двуслотовых электростанций.
  6. 	long temp;  //temp - количество свободных слотов.
  7. 	cin >> n;
  8. 	temp = n;
  9. 	char s;
  10. 	while(cin >> s) {
  11. 		c = (s - '0');
  12. 		num += (c == 2) ? 1 : 0;
  13. 		if (temp - c < 0 && num >= 1) {
  14. 			temp += (2 - c);
  15. 			num -= 1;
  16. 		}
  17. 		else if (temp - c >= 0) {
  18. 			temp -= c;
  19. 		}
  20. 		res += (num < 1) ? (n - temp) : (n - temp - num);
  21. 	}
  22. 	cout << res;
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 15232KB
comments (?)
stdin 
2
12
stdout 
2
https://ideone.com/cA2Keu
language:
C++ (gcc 8.3)
created:
5 years ago
visibility:
secret

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