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#include <iostream>
#include <string.h>
 
using namespace std;
 
int main()
{
    char a[101], f[101];
    cin.get(a, 101, '\n');
    int i, nr=0, m, n, ok=0, aux;
    n=strlen(a);
    for(i=0;i<n;i++)
    {
        nr++;
        if(a[i]==' ' && nr%2==1)
        {
            nr--;
            if(a[nr/2-1]==a[nr/2])
            {
                strcpy(a+(nr/2-1),a+(nr/2));
                aux=i-nr;
                strncat(f,a+aux,nr);
                if(strstr(a,f))
                {
                    cout << "DA";
                    ok=1;
                    return 0;
                }
                else
                {
                    nr=0;
                }
            }
        }
    }
    if(ok==0)
        cout << "NU";
}

Main.java:1: error: illegal character: '#'
#include <iostream>
^
Main.java:1: error: class, interface, or enum expected
#include <iostream>
         ^
Main.java:2: error: illegal character: '#'
#include <string.h>
^
Main.java:6: error: class, interface, or enum expected
int main()
^
Main.java:9: error: class, interface, or enum expected
    cin.get(a, 101, '\n');
    ^
Main.java:10: error: class, interface, or enum expected
    int i, nr=0, m, n, ok=0, aux;
    ^
Main.java:11: error: class, interface, or enum expected
    n=strlen(a);
    ^
Main.java:12: error: class, interface, or enum expected
    for(i=0;i<n;i++)
    ^
Main.java:12: error: class, interface, or enum expected
    for(i=0;i<n;i++)
            ^
Main.java:12: error: class, interface, or enum expected
    for(i=0;i<n;i++)
                ^
Main.java:15: error: class, interface, or enum expected
        if(a[i]==' ' && nr%2==1)
        ^
Main.java:18: error: class, interface, or enum expected
            if(a[nr/2-1]==a[nr/2])
            ^
Main.java:21: error: class, interface, or enum expected
                aux=i-nr;
                ^
Main.java:22: error: class, interface, or enum expected
                strncat(f,a+aux,nr);
                ^
Main.java:23: error: class, interface, or enum expected
                if(strstr(a,f))
                ^
Main.java:26: error: class, interface, or enum expected
                    ok=1;
                    ^
Main.java:27: error: class, interface, or enum expected
                    return 0;
                    ^
Main.java:28: error: class, interface, or enum expected
                }
                ^
Main.java:32: error: class, interface, or enum expected
                }
                ^
Main.java:38: error: class, interface, or enum expected
}
^
20 errors

Standard output is empty