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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	long long a, b, n, hp = 0;
  6. 	cin >> a >> b;
  7. 	cin >> n;
  8. 	for (int i = 0; i < n; i ++ ){
  9. 		int tmp;
  10. 		cin >> tmp;
  11. 		hp += tmp;
  12. 	}
  13. 	if (hp % 2 == 0) {
  14. 		if ((a % 2 == 1) & (b % 2 == 0)) {
  15. 			if (b > hp) {
  16. 				cout << "NO";
  17. 			} else {
  18. 				cout << "YES";
  19. 			}
  20. 		} else if ((a % 2 == 0) & (b % 2 == 1)) {
  21. 			if (a > hp) {
  22. 				cout << "NO";
  23. 			} else {
  24. 				cout << "YES";
  25. 			}
  26. 		} else if ((a % 2 == 0) & (b % 2 == 0)) {
  27. 			if (min(a, b) > hp) {
  28. 				cout << "NO";
  29. 			} else {
  30. 				cout << "YES";
  31. 			}
  32. 		} else {
  33. 			cout << "NO";
  34. 		}
  35. 	}
  36. 	else if (hp % 2 == 1) {
  37. 		if ((a % 2 == 0) & (b % 2 == 1)) {
  38. 			if (b > hp) {
  39. 				cout << "NO";
  40. 			} else {
  41. 				cout << "YES";
  42. 			}
  43. 		} else if ((a % 2 == 1) & (b % 2 == 0)) {
  44. 			if (a > hp) {
  45. 				cout << "NO";
  46. 			} else {
  47. 				cout << "YES";
  48. 			}
  49. 		} else if ((a % 2 == 1) & (b % 2 == 1)) {
  50. 			if (min(a, b) > hp) {
  51. 				cout << "NO";
  52. 			}
  53. 			else {
  54. 				cout << "YES";
  55. 			}
  56. 		} else {
  57. 			cout << "NO";
  58. 		}
  59. 	}
  60. }
Success #stdin #stdout 0.01s 5516KB
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https://ideone.com/cRyqb6
language:
C++ (gcc 8.3)
created:
2 years ago
visibility:
public

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