CodeForces Round #401 补题

Problem A：

#include <cstdio> #include <iostream> using namespace std; #define F(i,a,b) for(int i=a;i<b;i++) int main(){ int n,x; scanf("%d%d",&n,&x); n %= 6; while(n--){ if(n & 1){ if(x!=0) x=3-x; }else{ if(x!=2) x=1-x; } } cout<<x<<endl; return 0; }