26 lines
868 B
C
26 lines
868 B
C
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#include <stdio.h>
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#define O 1000
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#define E(a,b,X)if(a==b){X}else
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#define u int
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#define C(x,y)m[x][y]++
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#define P(a,b)a<b?1:-1
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#define L(s,e)u S=P(s,e);for(u c=s;c!=e;c+=S)
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int
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main(
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void){u m
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[O][O]={0},x,
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X,y,Y,I
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=0;while(
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fscanf(stdin,
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"%i,%i -> %i,%i",&x
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,&y,&X,&Y)==4){E(x,X,L(y,
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Y)C(x,c);C(x,Y);)
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E(y,Y,L(x,X)C(c,y);
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C(X,y);){u h=x,v=y,H=P(
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x,X),V=P(y,Y);for(;h!=X&&v!=Y
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;h+=H,v+=V)C(h,v);C(h,v);};};for(y=
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0;y<O;y++)for(x=0;x<O;x++)I
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+=m[x][y]
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>1;printf
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("Answer: %d\n",I);;}
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