Cod sursa(job #2084321)

Utilizator maria15Maria Dinca maria15 Data 8 decembrie 2017 22:29:26
Problema A+B Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.3 kb
Raporteaza aceasta sursa 
#include <fstream>

using namespace std;

int n, i, x, nr, f[100003];

ifstream fin("carti1.in");
ofstream fout("carti1.out");

int main(){
    fin>>n;
    for(i=1;i<=n;i++){
        fin>>x;
        f[x] = 1;
        if(f[x-1] == 1)
            nr++;
    }
    fout<<nr;
    return 0;
}