Cod sursa(job #686856)

Utilizator dtoniucDaniel Toniuc dtoniuc Data 21 februarie 2012 21:55:10
Problema 12-Perm Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.34 kb
Raporteaza aceasta sursa 
#include <iostream>
#include <fstream>

using namespace std;
int a[4],n,mod=(1<<20)-1;
int main()
{
	ifstream fin("12perm.in");
	fin>>n;
	
	a[1]=2;
	a[2]=6;
	a[3]=12;
	for(int i=3;i<n-1;i++)
	{
		int nr=a[2];
		a[2]=a[3];
		a[3]+=a[i]+2*i;
		a[1]=nr;
		a[3]%=mod;
	}
	ofstream fout("12perm.out");
	fout<<a[3];
	return 0;
}