View Compilation Error

0_0_11865508_22307.cpp:17: error: `n' was not declared in this scope
0_0_11865508_22307.cpp:18: error: expected `,' or `;' before '{' token
0_0_11865508_22307.cpp: In function `int main()':
0_0_11865508_22307.cpp:59: error: `find_set' cannot be used as a function
0_0_11865508_22307.cpp:59: error: `find_set' cannot be used as a function