//最简单的hash #include<iostream>using namespace std;int a, b, c, d;int x1, x2, x3, x4;int f1[1000005];int f2[1000005];int main(){while(cin >> a >> b >> c >> d){if( a > 0 && b > 0 && c > 0 && d > 0){c
//引用冬月之神的帖子,尊重原创,传送门 Equations Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 899 Accepted Submission(s): 356 Problem Description