#include <stdio.h>

void x(int (*(int (*)(int, int)))(int, int));

/*-----------------------------*/
int f(int n, int m) { return n + m; }
int (*g(int (*a)(int, int)))(int, int) { return a;}

int main() {
  x(g);
  return 0;
}

void x(int (*b(int (*)(int, int)))(int, int)) {
  printf("%d", (*b(f))(3, 4));
}

/* end */

7