#include <stdlib.h>
#define R(i) rand()%i
#define exit(b,A,B) *G(m+A,k+B)|(b&&*G(m-A,k-B))
#define do(x) int x(int
#define else(a,b,c,d) {a=R(c)&~1,b##1=R(d)&~1,b##2=R(d)&~1;if(b##2\
<b##1)k=b##1,b##1=b##2,b##2=k;for(k=0,b=b##1;b<=b##2;b++)if(*G(x,y\
))k++;if(!--k)for(F++,b=b##1;b<=b##2;b++)*G(x,y)=b%2||F--!=0;}
static unsigned X=50,Y=16,x,y,x1,x2,y1,y2,k,F;static char*f="Usage: sig1i ["
"<xsize> [<ysize>]]\n\n";do(putchar));static char*G(int m,int n){if(!f){for(
X=--m|1,Y=1|--n,f=(char*)calloc(X+1,Y+1);X>x||x<Y;x++)X>x?*G(x,0)=*G(x,Y-1)=
1:0,Y>x&&x>1?*G(0,x)=*G(X-1,Y-1-x)=1:0;for(F=(X-3)*(Y-3)/4;F;)if(R(2))else(x
,y,X,Y) else else(y,x,Y,X)for(;Y>k;putchar('\n'),k++)for(m=F;m^X;putchar(" "
"-|+"[(x+n+n)**G(m++,k)]))x=exit(m,1,0),n=exit(k,0,1);}return&m<:n*(X+1)+f];
}do(main)A,const char**V){do(time));for(srand(time(k));F^34;putchar(f[F++]))
;for(f=(char*)0;--A;)*(k++?&Y:&X)=atoi(*++V);return(int)G(X,Y);}