View Compilation Error

0_0_33547806_1457.cpp:9:1: error: 'point' does not name a type
 point ans[51][51][4];
 ^
0_0_33547806_1457.cpp: In function 'void dfs(int)':
0_0_33547806_1457.cpp:24:6: error: 'ans' was not declared in this scope
   a+=ans[dep][i][0],b+=ans[dep][i][1],c+=ans[dep][i][2], d+=ans[dep][i][3];
      ^
0_0_33547806_1457.cpp: In function 'int main()':
0_0_33547806_1457.cpp:39:4: error: 'ans' was not declared in this scope
    ans[s][cnt[s]][0]=a;
    ^