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Cod sursa(job #293368)
#include<fstream.h>
ifstream fin("multimi2.in");
ofstream fout("multimi2.out");
int main()
{
long int n,i,j,s1,s2,u1,u2;
fin>>n;u1=1;u2=n;
if ((n*(n+1)/2)%2==0)
{
fout<<"0"<<'\n';
s2=n*(n+1)/2;
s1=0;i=1;
while (s1!=s2)
{
if (i%2==1)
{
s1=s1+u2;
s2=s2-u2;
u2=u2-1;
}
else
{
s1=s1+u1;
s2=s2-u1;
u1=u1+1;
}
i++;
}
i=i-1;
fout<<n-i<<'\n';
for (j=u1;j<=u2;j++)
{fout<<j<<" ";}
fout<<'\n'<<i<<'\n';
for (j=1;j<u1;j++)
{fout<<j<<" ";}
for (j=u2+1;j<=n;j++)
{fout<<j<<" ";}
}
else
{
fout<<"1"<<'\n';
s2=n*(n+1)/2;
s1=0;i=1;
while (s1<s2+1)
{
if (i%2==1)
{
s1=s1+u2;
s2=s2-u2;
u2=u2-1;
}
else
{
s1=s1+u1;
s2=s2-u1;
u1=u1+1;
}
i++;
}
i=i-1;
fout<<n-i<<'\n';
for (j=u1;j<=u2;j++)
{fout<<j<<" ";}
fout<<'\n'<<i<<'\n';
for (j=1;j<u1;j++)
{fout<<j<<" ";}
for (j=u2+1;j<=n;j++)
{fout<<j<<" ";}
}
return 0;
}