#include <stdio.h>

int main(int argc, char* argv[])
{
int num = 0;
char str[64] = {'\0'};
char buff[64] = {'\0'};

scanf("%d",&num);

//_itoa
int i=0,s = num;
for(;s != 0;s /= 10,++i) buff[i] = '0' + s % 10;
for(;i>0;++s,--i) str[i-1] = buff[s];

printf("%s\n",str);
return 0;
}