摘要： #include<stdio.h>#include<algorithm>#include<iostream>#include<string.h>#include<math.h>using namespace std;const int MAXN=50;int a[MAXN][MAXN];//增广矩阵int x[MAXN];//解集bool free_x[MAXN];//标记是否是不确定的变元/*void Debug(void){ int i, j; for (i = 0; i < equ; i++) { for (j = 0; 阅读全文

摘要： SETITime Limit: 1000MSMemory Limit: 30000KTotal Submissions: 1148Accepted: 691DescriptionFor some years, quite a lot of work has been put into listening to electromagnetic radio signals received from space, in order to understand what civilizations in distant galaxies might be trying to tell us. One 阅读全文