#include <stdio.h>
#include <string.h>
#include <stdbool.h>
int main(int argc, char **argv)
{
const char *a = argv[1];
const char *b = argv[2];
if (strlen(b) > strlen(a)) {
const char *tmp = a;
a = b;
b = tmp;
}
char t[1024];
int v = 0;
char *u = t;
const char *w = a + strlen(a) - 1;
const char *x = b + strlen(b) - 1;
while (w >= a && x >= b) {
char num = v + *w + *x - '0';
if (num > '9') {
v = 1;
num -= 10;
} else {
v = 0;
}
*u++ = num;
--w, --x;
}
while (w >= a) {
char num = v + *w;
if (num > '9') {
v = 1;
num -= 10;
} else {
v = 0;
}
*u++ = num;
--w;
}
if (v) {
*u++ = '1';
}
--u;
while (u > t && *u == '0') {
--u;
}
while (u >= t) {
putchar(*u--);
}
putchar('\n');
return 0;
}