#include <iostream>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <algorithm>
using namespace std;
int ab[12]= {0};
int tw()
{switch(ab[2]){case 1:if(ab[5]==3)return 0;break;case 2:if(ab[5]==4)return 0;break;case 3:if(ab[5]==1)return 0;break;case 4:if(ab[5]==2)return 0;break;}return 1;
}
int tr()
{switch(ab[3]){case 1:if(ab[6]!=1&&ab[2]!=1&&ab[4]!=1)return 0;break;case 2:if(ab[6]!=2&&ab[6]!=ab[2]&&ab[6]!=ab[4])return 0;break;case 3:if(ab[2]!=3&&ab[2]!=ab[6]&&ab[2]!=ab[4])return 0;break;case 4:if(ab[4]!=4&&ab[4]!=ab[2]&&ab[4]!=ab[6])return 0;break;}return 1;
}
int fo()
{switch(ab[4]){case 1:if(ab[1]==ab[5])return 0;break;case 2:if(ab[2]==ab[7])return 0;break;case 3:if(ab[1]==ab[9])return 0;break;case 4:if(ab[6]==ab[10])return 0;break;}return 1;
}
int fi()
{switch(ab[5]){case 1:if(ab[8]==1)return 0;break;case 2:if(ab[4]==2)return 0;break;case 3:if(ab[9]==3)return 0;break;case 4:if(ab[7]==4)return 0;break;}return 1;
}
int si()
{switch(ab[6]){case 1:if(ab[2]==ab[4]&&ab[8]==ab[2])return 0;break;case 2:if(ab[1]==ab[6]&&ab[1]==ab[8])return 0;break;case 3:if(ab[3]==ab[10]&&ab[3]==ab[8])return 0;break;case 4:if(ab[5]==ab[9]&&ab[8]==ab[5])return 0;break;}return 1;
}
int k[5];
int big(int n)
{for(int i=1; i<=4; i++)if(k[n]>k[i])return 0;return 1;
}
int se()
{switch(ab[7]){case 1:if(big(3))return 0;break;case 2:if(big(2))return 0;break;case 3:if(big(1))return 0;break;case 4:if(big(4))return 0;break;}return 1;
}
int te()
{int t=abs(k[4]-k[1]);switch(ab[10]){case 1:if(t==3)return 0;break;case 2:if(t==2)return 0;break;case 3:if(t==4)return 0;break;case 4:if(t==1)return 0;break;}return 1;
}
int ei()
{switch(ab[8]){case 1:if(abs(ab[7]-ab[1])!=1)return 0;break;case 2:if(abs(ab[5]-ab[1])!=1)return 0;break;case 3:if(abs(ab[2]-ab[1])!=1)return 0;break;case 4:if(abs(ab[10]-ab[1])!=1)return 0;break;}return 1;
}
int ni()
{int a=(ab[1]==ab[6]);switch(ab[9]){case 1:if((ab[6]==ab[5])!=a)return 0;break;case 2:if((ab[10]==ab[5])!=a)return 0;break;case 3:if((ab[2]==ab[5])!=a)return 0;break;case 4:if((ab[9]==ab[5])!=a)return 0;break;}return 1;
}
int panduan()
{memset(k,0,sizeof(k));if(tw())return 0;if(tr())return 0;if(fo())return 0;if(fi())return 0;if(si())return 0;if(ei())return 0;if(ni())return 0;for(int i=1; i<=10; i++)k[ab[i]]++;if(se())return 0;sort(k,k+5);if(te())return 0;return 1;
}
int digui(int i)
{if(i==11&&panduan())for(int a=1; a<=10; a++)printf("%d\t%c\n",a,64+ab[a]);else if(i<11)for(ab[i]=1; ab[i]<=4; ab[i]++)digui(i+1);return 0;
}
int main()
{printf("answer:\n");digui(1);return 0;
}

暴力枚举，简简单单