#include <iostream>#include <cmath>using namespace std;int main(void){ char temp[9]; int i,j,r1,c1,r2,c2,num; char ch; while(cin>>temp){ char game[8][8]; for(i=0;i<8;i++) game[0][i]=temp[i]; for(j=1;j<8;j++){ cin>>temp; for(i=0;i<8;i++) game[j][i]=temp[i];} cin>>r1>>c1>>r2>>c2; if(r1<1||r1>8||c1<1||c1>8||r2<1||r2>8||c2<1||c2>8){ cout<<"Illegal move!"<<endl; continue; } if(abs(r1-r2)+abs(c1-c2)!=1){ cout<<"Illegal move!"<<endl; continue;} ch=game[r1-1][c1-1]; game[r1-1][c1-1]=game[r2-1][c2-1]; game[r2-1][c2-1]=ch; for(i=0;i<8;i++){ num=1; ch=game[i][0]; for(j=1;j<8;j++){ if(game[i][j]==ch){ num++; if(num==3) break; } else{ ch=game[i][j]; num=1; } } if(num==3) break;} if(num==3){ cout<<"Ok!"<<endl; continue; } for(i=0;i<8;i++){ num=1; ch=game[0][i]; for(j=1;j<8;j++){ if(game[j][i]==ch){ num++; if(num==3) break; } else{ ch=game[j][i]; num=1;} } if(num==3) break;} if(num==3) cout<<"Ok!"<<endl; else cout<<"Illegal move!"<<endl; } return 0;}
