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Cod sursa(job #712796)
#include<stdio.h>
FILE*f=fopen("oras.in","r");
FILE*g=fopen("oras.out","w");
int n,a[201][201];
int main()
{
fscanf(f,"%d",&n);
if(n%2)
{
a[1][2]=1;
a[2][3]=1;
a[3][1]=1;
for(int i=5;i<=n;i+=2)
{
a[i-1][i]=1;
for(int j=1;j<=i-2;++j)
{
a[j][i-1]=1;
a[i][j]=1;
}
}
for(int i=1;i<=n;++i)
{
for(int j=1;j<=n;++j)
fprintf(g,"%d",a[i][j]);
fprintf(g,"\n");
}
}
else
{
if(n==4)
fprintf(g,"-1");
else
{
a[1][2]=a[3][1]=a[1][4]=a[5][1]=a[6][1]=a[2][3]=a[2][4]=a[5][2]=a[2][6]=1;
a[3][4]=a[5][3]=a[6][3]=a[4][5]=a[4][6]=a[6][5]=1;
for(int i=8;i<=n;i+=2)
{
a[i-1][i]=1;
for(int j=1;j<=i-2;++j)
{
a[j][i-1]=1;
a[i][j]=1;
}
}
for(int i=1;i<=n;++i)
{
for(int j=1;j<=n;++j)
fprintf(g,"%d",a[i][j]);
fprintf(g,"\n");
}
}
}
fclose(f);
fclose(g);
return 0;
}