24-programare

#include<iostream>
#include<fstream>

using namespace std;

int v[1000];
int main(){
    ifstream f1("atestat.in");
    ofstream f2("atestat.out");
    int n,x,y,ver=0,i=0,p,ok=0,a,aux,j;
    f1>>n;
    while(f1>>x){
        y=x;
        i++;
        while(y >= 10)
            y=y/10;
        if(y == 0)
            i--;
        if(y != 0)
            v[i]=y;
        if(ver == 0){
            ver=1;
            p=x;
        }
        else
            if(ok == 0)
                if(p > x)
                    ok=1;
        p=x;
    }
    if(ok == 0)
        f2<<"DA";
    else
        f2<<"NU";
    f2<<endl;
    for(a=1;a<=i-1;a++)
        for(j=a+1;j<=i;j++)
            if(v[a] < v[j]){
                aux=v[a];
                v[a]=v[j];
                v[j]=aux;
            }
    for(j=1;j<=i;j++)
        f2<<v[j];
}