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Cod sursa(job #469297)
#include <stdio.h>
using namespace std;
#define dim 500010
int m1[dim], m2[dim],n,n1,n2,x,d;
int main()
{
FILE *f=fopen("multimi2.in","r"), *g=fopen("multimi2.out","w");
fscanf(f,"%d",&n);
int i;
x=n % 4;
switch (x)
{
case 0:
{
for (i=1; i<n/2; i+=2)
{
m1[i] = i; m1[i + 1] = n - i + 1;
m2[i] = i + 1; m2[i + 1] = n - i;
}
d = 0;
n1 = n2 = n/2;
break;
}
case 1:
{
for (i=1; i<n/2; i+=2)
{
m1[i] = i + 1; m1[i + 1] = n - i + 1;
m2[i] = i + 2; m2[i + 1] = n - i ;
}
d = 1;
n1 = n2 = n/2;
m1[++n1] = 1;
break;
}
case 2:
{
for (i=1; i<n/2; i+=2)
{
m1[i] = i + 2; m1[i + 1] = n - i + 1;
m2[i] = i + 3; m2[i + 1] = n - i ;
}
d = 1;
n1 = n2 = n/2 - 1;
m1[++n1] = 1;
m2[++n2] = 2;
break;
}
case 3:
{
for (i=1; i<n/2; i+=2)
{
m1[i] = i + 3; m1[i + 1] = n - i + 1;
m2[i] = i + 4; m2[i + 1] = n - i ;
}
d = 0;
n1 = n2 = n/2 - 1;
m1[++n1] = 1;
m1[++n1] = 2;
m2[++n2] = 3;
break;
}
}
fprintf(g,"%d\n",d);
fprintf(g,"%d\n",n1);
for (i = 1; i <= n1; i++) fprintf(g,"%d ",m1[i]);
fprintf(g,"\n%d\n",n2);
for (i = 1; i <= n2; i++) fprintf(g,"%d ",m2[i]);
fprintf(g,"\n");
return 0;
}