// School of Computer Engineering
// K.N. Toosi University of Technology

#include <stdio.h>

int __attribute ((stdcall)) sum(int,int,int,int);

int main() {
  int c;

  c = sum(2,4,8,10);
  
  return  0;
}

int __attribute ((stdcall)) sum(int a, int b, int c, int d) {
  return a+b+c+d;
}