View Compilation Error

0_0_36272090_26816.cpp: In function 'int main()':
0_0_36272090_26816.cpp:21:22: error: 'find' was not declared in this scope
             if(find(x)!=find(y))
                      ^
0_0_36272090_26816.cpp:22:13: error: 'p' was not declared in this scope
             p[x]=y;
             ^