View Compilation Error

0_0_17953959_18777.cpp: In function 'int KM()':
0_0_17953959_18777.cpp:46:11: error: a function-definition is not allowed here before '{' token
 int main(){
           ^
0_0_17953959_18777.cpp:49:1: error: expected '}' at end of input
 }
 ^