3
2
38
168
610
270
int gcd(int a,int b) { return b==0?a:gcd(b,a%b); } int lcm(int a,int b) { return a/gcd(a,b)*b; } int a[maxn][maxn],x[maxn]; int equ,var; int Gauss() { int i,j,k,max_r,col; int LCM,tmp,ta,tb; fo...