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Cod sursa(job #110025)
#include <stdio.h>
#define MAX_N 1000005
#define FIN "multimi2.in"
#define FOUT "multimi2.out"
int N;
char U[MAX_N];
int main(void)
{
int i, cnt = 0;
long long half;
freopen(FIN, "r", stdin);
freopen(FOUT, "w", stdout);
scanf("%d", &N);
half = ((long long)N*(N+1)/2)/2;
for (i = N; half > 0; )
{
for (; i > 0 && (U[i] || i > half); --i);
half -= i; U[i] = 1; cnt++;
}
printf("%lld\n", ((long long)N*(N+1)/2)%2);
printf("%d\n", cnt);
for (i = 1; i <= N; ++i)
if (U[i]) printf("%d ", i);
printf("\n%d\n", N-cnt);
for (i = 1; i <= N; ++i)
if (!U[i]) printf("%d ", i);
printf("\n");
return 0;
}