#include <stdio.h>
#include <stdint.h>
uint32_t convert_endian(uint32_t value) {
// Write logic to swap bytes
uint32_t val = 0x00;
for(uint32_t i =0 ; i<4 ;i++){
val <<= 8;
val |= (value & 0xff);
value >>=8;
}
return val;
}
int main() {
uint32_t val;
scanf("%u", &val);
printf("%u", convert_endian(val));
return 0;
}