#include <stdio.h>
#include <stdint.h>
uint32_t convert_endian(uint32_t value) {
// Write logic to swap bytes
uint32_t mask=0x0000ff;
uint32_t ans=0;
for(int i=0;i<4;i++){
ans=ans|((mask&value)<<8*(3-i));
value=value>>8;
}
return ans;
}
int main() {
uint32_t val;
scanf("%u", &val);
printf("%u", convert_endian(val));
return 0;
}