#include <stdio.h> void update(int *a,int *b) { int ans = *a; *a = *a + *b; *b = ans - *b; if (*b <0){ *b = -(*b); } //printf("*pb %d\n", *pb); //printf("*a %d\n",*a); //printf("*b %d\n",*b); //printf("*pa %d\n",*pa); //printf("\n"); // } int main() { int a, b; int *pa = &a, *pb = &b; scanf("%d %d", &a, &b); update(pa, pb); printf("%d\n%d", a, b); return 0; }