View Compilation Error

0_0_23409790_24783.cpp: In function 'int nYAn::main()':
0_0_23409790_24783.cpp:245:10: error: ambiguating new declaration of 'int nYAn::main()'
 int main(){
          ^
0_0_23409790_24783.cpp:188:6: note: old declaration 'void nYAn::main()'
 void main(){
      ^
0_0_23409790_24783.cpp: At global scope:
0_0_23409790_24783.cpp:248:1: error: expected '}' at end of input
 }
 ^