36 lines
767 B
C++
36 lines
767 B
C++
#include<stdio.h>
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#include<string.h>
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int main()
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{
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char s[1000],a[100][100];
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int i,j,k,l,m,n,t,f,g,len;
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while(scanf("%d",&n)!=EOF&&n)
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{ t=-1;
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getchar();
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gets(s);len=strlen(s);
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for(i=0,j=-1;s[i]!='\0';i++)
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{
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if(i%n==0)
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{ t++;j++;k=0;}
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if(t%2==0)
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{
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a[j][k++]=s[i];
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}
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if(t%2==1)
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{
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f=i+n-1;
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for(g=f;g>=i;g--)
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a[j][k++]=s[g];
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i=i+n-1;
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}
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}
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for(i=0;i<n;i++)
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{
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for(j=0;j<=t;j++)
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printf("%c",a[j][i]);
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}
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printf("\n");
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}
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return 0;
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}
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