View Compilation Error

0_0_33454538_2557.cpp: In function 'int main()':
0_0_33454538_2557.cpp:153:5: error: redefinition of 'int main()'
 int main(){
     ^
0_0_33454538_2557.cpp:92:5: note: 'int main()' previously defined here
 int main() {
     ^
0_0_33454538_2557.cpp:157:9: error: expected ';' before 'memset'
         memset(vis,false,sizeof(vis));
         ^