Parsare

#include <cstdio>
#include <iostream>
using namespace std;

int ReadInt()
{
    bool semnui=false;
    int nr=0;
    char c;
    while(true) /// Daca c e EOF, intorc 100001;daca c='-', n e negativ, altfel e o cifra
    {
        c=getchar();
        if(c==EOF)
            return 100001;
        if(c=='-')
        {
            semnui=true;
            break;
        }
        if(isdigit(c))
        {
            nr=c-'0';
            break;
        }
    }
    while (true)
    {
        c=getchar();
        if(!isdigit(c)) /// Daca c nu e cifra (adica e spatiu)
            break;
        nr=10*nr+c-'0'; /// altfel, calculez numarul
    }
    if(semnui==true)
        return -nr;
    return nr;
}

int main()
{
    freopen("parsare.in","r",stdin);
    freopen("parsare.out","w",stdout);
    int n,nmax=-100001;
    while(true)
    {
        n=ReadInt();
        if(n==100001) /// Daca e sfarsit de fisier
        {
            cout<<nmax;
            return 0;
        }
        nmax=max(nmax,n);
    }
    return 0;
}