View Compilation Error

0_0_24923282_30731.cpp:23:5: error: 'ans' does not name a type
     ans=min(ans,abs(t*t-n));
     ^
0_0_24923282_30731.cpp:24:5: error: expected unqualified-id before 'return'
     return true;
     ^
0_0_24923282_30731.cpp:25:1: error: expected declaration before '}' token
 }
 ^