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#include <iostream>

using namespace std;

char a[101], b[101], c[101][101];

int Compar(char a[], char b[])
{
    int i = 0;
    while(a[i] != 0 && b[i] != 0)
    {
        if(a[i] < b[i]) return -1;
        if(a[i] > b[i]) return 1;
        i++;
    }
    if(a[i] == 0 && b[i] != 0) return -1;
    if(a[i] != 0 && b[i] == 0) return 1;
    return 0;
}

void Afis(char a[101][101])
{
    int i, j;
    for(i = 0; a[i][0] != 0; i++)
    {
        for(j = 0; a[i][j] != 0; j++)
            cout << a[i][j];
        cout << "\n";
    }
}

void Mem(char a[101])
{
    int i, j, n;
    i = 0;
    j = 0;
    n = 0;
    while(a[n] != 0)
    {
        c[i][j++] = a[n++];
        if(a[n] == ' ')
        {
            c[i][j] = 0;
            i++;
            j = 0;
            n++;
        }
    }
}

inline void Mutare(char a[], int n)
{
    while(a[n] != 0)
        a[n] = a[++n];
}

void ElimSpatii(char a[])
{
    for(int i = 0; a[i] != 0; i++)
        if(a[i] == ' ') Mutare(a, i);
}

int main()
{
    cout << "a: ";cin.getline(a, 101);
    //cout << "b: ";cin.getline(b, 101);

    //cout << Compar(a, b) << "\n";

    /*
    Mem(a);
    Afis(c);
    */

    ElimSpatii(a);
    cout << a;
    return 0;
}