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