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1007_To_and_Fro.cpp
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1007_To_and_Fro.cpp
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// Problem#: 1007
// Submission#: 888957
// The source code is licensed under Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License
// URI: http://creativecommons.org/licenses/by-nc-sa/3.0/
// All Copyright reserved by Informatic Lab of Sun Yat-sen University
#include<iostream>
using namespace std;
char str[100][20];
char a[1000][200];
int main()
{
int b=0;
int cow;
int row;
while(cin>>cow)
{
if(cow==0)break;
cin>>a[b];
int f=0;
while(a[b][f]!='\0')
f++;
row=f/cow;
int go=0;
for(int i=0;i<row;i++)
{
if((i%2)==0){
for(int j=0;j<cow;j++)
{
str[i][j]=a[b][go];
go++;
}
}
else if((i%2)==1)
{
int j=cow-1;
for(;j>=0;j--)
{
str[i][j]=a[b][go];
go++;
}
}
}
go=0;
for(int i=0;i<cow;i++)
{
for(int j=0;j<row;j++)
{
a[b][go]=str[j][i];
go++;
}
}
b++;
}
for(int i=0;i<b;i++)
{
cout<<a[i]<<endl;
}
return 0;
}