#include<stdio.h> #include<algorithm> #include<iostream> #include<math.h> #include<cstring> #define go(i,a,b) for(int i=a;i<=b;i++) #define ro(i,a,b) for(int i=a;i>=b;i--) #define fo(i,a,x) for(int i=a[x],v=e[i].v;i;i=e[i].next,v=e[i].v) #define mem(a,b) memset(a,b,sizeof(a)) using namespace std; int main() { return 0; }//Paul_Guderian