#include <stdio.h>
#include <stdint.h>
uint32_t convert_endian(uint32_t value) {
// Write logic to swap bytes
int ans=0;
for (int i = 0; i < 4; i++) {
ans |= ((value >> (8 * i)) & 0xFF) << (8 * (3 - i));
}
return ans;
}
int main() {
uint32_t val;
scanf("%u", &val);
printf("%u", convert_endian(val));
return 0;
}