#include <stdio.h>
#include <stdint.h>
uint32_t convert_endian(uint32_t value) {
// Write logic to swap bytes
uint32_t res = 0;
for (int i = 0; i < 4; i++){
res |= (value & 255U) << ((3 - i) * 8);
value >>= 8;
}
return res;
}
int main() {
uint32_t val;
scanf("%u", &val);
printf("%u", convert_endian(val));
return 0;
}