#include<iostream>
#include<cstring>
using namespace std;
char x[105],*p,aux[105],r[105];
int main ()
{
    int n,m,b,s,i;
    cin.getline(x,25);
    p=strtok(x," ");
    strcpy(aux,p);
    p=strtok(0," ");
    strncpy(r,p,1);
    strcat(r,". ");
    strcat(r,aux);
    cout<<r;
    return 0;
}

95