P1002 過河卒

#include<iostream> #include<cstdio> #define ll long long ll a,b,n,m,l[22][22],map[23][23]; using namespace std; void bj(ll x,ll y) { map[x][y]=1; map[x-1][y-2]=1; map[x-2][y-1]=1; map[x-2][y+1]=1

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