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