View Compilation Error

0_0_38050450_20630.cpp: In function 'void bfs1(int, int)':
0_0_38050450_20630.cpp:24:2: error: 'v1' was not declared in this scope
  v1[xx][yy]=1;
  ^
0_0_38050450_20630.cpp: In function 'int main()':
0_0_38050450_20630.cpp:114:10: error: 'v1' was not declared in this scope
   memset(v1,0,sizeof(v1));
          ^
0_0_38050450_20630.cpp:115:10: error: 'v2' was not declared in this scope
   memset(v2,0,sizeof(v2));
          ^