Run id: 148081

Main.cc: In function 'int main()':
Main.cc:15:5: error: return-statement with no value, in function returning 'int' [-fpermissive]
     return;
     ^
Main.cc:4:13: warning: unused variable 'ans' [-Wunused-variable]
 int n,a,b,c,ans; 
             ^