HDU 5655 CA Loves Stick

HDU 5655

注意long long 超范围和长度为0的情况。

#include <iostream>#include <cstdlib>#include <cstring>#include <cstdio>#include <cmath>using namespace std;int exam(long long a, long long b, long long c, long long d) {if(b + c < 0) return 1;if(c + d < 0) return 1;if(b + d < 0) return 1;if(b + c + d < 0) return 1;if(a < b + c + d) return 1;return 0;}int main() {int T;scanf("%d", &T);long long a, b, c, d;while(T--) {scanf("%I64d %I64d %I64d %I64d", &a, &b, &c, &d);if(a != 0 && b != 0 && c != 0 && d != 0 && exam(a, b, c, d) && exam(b, a, c, d) && exam(c, a, b, d) && exam(d, a, b, c)) {printf("Yes\n");}else printf("No\n");}    return 0;}