心灵终结。。。。终结个人心灵。。。。T—T

#include<iostream> #include<stdio.h> #include<stdlib.h> #define ll long long const int maxn=20; using namespace std; int a[maxn][maxn]; ll f(ll x){ if(x%4==0)return x; if(x%4==1)return x+1; if(x%4=

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