//gameOX.c
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<unistd.h>

int oxpoint(int p[9]);
void oxapp(int b[9]);
int judge(int x[9]);

int main(void){
  int box[9]={1,2,3,4,5,6,7,8,9};
  int n, i, j, k=1;

  printf("Let's Play OX Game!\n");
  printf("Your piece is O.\n\n");

  oxapp(box);
  for(i=0; i<9; i++){
    box[i]=0;
  }
  printf("\n\n");

  while(k){
    scanf("%d", &n);
    if(n<1 && n>9){
      break;
    }else{
      box[n-1]= -1;
      oxapp(box);
      printf("\033[5A");

      j=judge(box);

      if(j==0){
        sleep(1);
        i=oxpoint(box);
        if(i==120){
          k=0;
          break;
        }else{
          box[i]= -2;
          oxapp(box);
          printf("\033[6A");

          j=judge(box);
          if(j== -2){
            printf("\n\n\n\n\n\n\nYou Lost.\n");
            k=0;
            break;
          }
        }
      }else if(j== -1){
        sleep(1);
        printf("\n\n\n\n\n\nYou Win!!\n");
        k=0;
        break;
      }else if(j== -2){
        sleep(1);
        printf("\n\n\n\n\n\nYou Lost.\n");
        k=0;
        break;
      }
    }
  }
  return 0;
}

int oxpoint(int p[9]){
  int a, b=0, c[8];
  srand(time(NULL));
  rand(); rand(); rand(); rand();

  for(a=0; a<9; a++){
    if(p[a]==0){
      c[b]=a;
      b++;
    }
  }
  if(b==0){
    printf("\n\n\n\n\n\nDraw...\n");
    return 120;
  }else{
    return c[rand()%b];
  }
}
void oxapp(int b[9]){
  int m;
  for(m=0; m<9; m++){
    switch(m){
      case 0:
      case 3:
      case 6:
        if(b[m]==0){
          printf("  |");
          break;
        }else if(b[m]== -1){
          printf("O |");
          break;
        }else if(b[m]== -2){
          printf("X |");
          break;
        }else{
          printf("%d |", b[m]);
          break;
        }
      case 1:
      case 4:
      case 7:
        if(b[m]==0){
          printf("   |");
          break;
        }else if(b[m]== -1){
          printf(" O |");
          break;
        }else if(b[m]== -2){
          printf(" X |");
          break;
        }else{
          printf(" %d |", b[m]);
          break;
        }
      case 2:
      case 5:
        if(b[m]==0){
          printf("  \n---------\n");
          break;
        }else if(b[m]== -1){
          printf(" O\n---------\n");
          break;
        }else if(b[m]== -2){
          printf(" X\n---------\n");
          break;
        }else{
          printf(" %d\n---------\n", b[m]);
          break;
        }
      case 8:
        if(b[m]==0){
          printf("  \n");
          break;
        }else if(b[m]== -1){
          printf(" O\n");
          break;
        }else if(b[m]== -2){
          printf(" X\n");
          break;
        }else{
          printf(" %d\n", b[m]);
          break;
        }
    }
  }
}

int judge(int x[9]){
  int a;

  for(a=-1; a>-3; a--){
    if(x[0]==a && x[1]==a && x[2]==a){
      return a;
    }else if(x[3]==a && x[4]==a && x[5]==a){
      return a;
    }else if(x[6]==a && x[7]==a && x[8]==a){
      return a;
    }else if(x[0]==a && x[3]==a && x[6]==a){
      return a;
    }else if(x[1]==a && x[4]==a && x[7]==a){
      return a;
    }else if(x[2]==a && x[5]==a && x[8]==a){
      return a;
    }else if(x[0]==a && x[4]==a && x[8]==a){
      return a;
    }else if(x[2]==a && x[4]==a && x[6]==a){
      return a;
    }
  }
  return 0;
}