63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
#include<iostream>
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#include<cstdio>
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#include<vector>
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#include<algorithm>
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#include<cstring>
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#include<queue>
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#include<set>
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#include<math.h>
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#include<string>
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using namespace std;
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typedef long long ll;
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using namespace std;
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#define INF 10000000
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int a[54][2];
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int main()
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{
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int n;
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while(scanf("%d",&n)!=EOF && n)
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{
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memset(a,0,sizeof(a));
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if(n==1)
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{
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printf("Printing order for %d pages:\n", n);
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printf("Sheet 1, front: Blank, 1\n");
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continue;
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}
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int i,j,k = n/4;
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if(n%4!=0 ) k++;
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for(i=1;i<=2*k;i++)
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a[i][0] =i;
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for(i=2*k,j=i+1;i>=1;i--,j++)
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{
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if(j<=n)
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a[i][1]=j;
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}
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printf("Printing order for %d pages:\n",n);
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char s[2][10]={"front","back "};
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char *p;
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for(i=1;i<=2*k;i++)
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{
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if(a[i][0]==0 && a[i][0]==0 )continue;
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j=i/2;
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if( i&1 )
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{
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p=s[0];
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j++;
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}
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else
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p=s[1];
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printf("Sheet %d, %s:",j,p);
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if( i&1 )
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swap(a[i][0],a[i][1]);
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for(int m=0;m<2;m++)
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{
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if(a[i][m] ) printf(" %d",a[i][m]);
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else printf(" Blank");
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if(!m) putchar(',');
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}
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printf("\n");
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}
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}
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}
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