78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
#include <iostream>
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#include <cstring>
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#include <cstdio>
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#include <cmath>
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#include <algorithm>
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using namespace std;
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int n,m;
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int MIN(int x,int y)
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{
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if (x<y) return x;
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return y;
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}
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int main()
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{
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int x1,y1,x2,y2,t,ii,i,j,k,fx11,fx12,fx21,fx22,move,x1o,x2o,y1o,y2o;
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double ansx,ansy;
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scanf("%d",&t);
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for (ii=1;ii<=t;ii++)
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{
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scanf("%d%d%d%d%d%d",&n,&m,&x1,&y1,&x2,&y2);
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fx11=1;fx12=1;fx21=1;fx22=1;
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if (x1==n&&fx11>0||x1==0&&fx11<0) fx11=-fx11;
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if (y1==m&&fx12>0||y1==0&&fx12<0) fx12=-fx12;
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if (x2==n&&fx21>0||x2==0&&fx21<0) fx21=-fx21;
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if (y2==m&&fx22>0||y2==0&&fx22<0) fx22=-fx22;
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for (i=1;i<=410000;i++)
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{
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if (abs(x1-x2)==abs(y1-y2)&&((x2-x1)/fx11>0)&&((y2-y1)/fx12>0)&&((x1-x2)/fx21 >0)&&((y1-y2)/fx22>0))//杩㈢告
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{
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ansx=(x1+x2)/2.0;
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ansy=(y1+y2)/2.0;
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break;
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}
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if (fx11>0) move=n-x1;
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else move=x1;
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if (fx12>0) move=MIN(move,m-y1);
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else move=MIN(move,y1);
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if (fx21>0) move=MIN(move,n-x2);
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else move=MIN(move,x2);
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if (fx22>0) move=MIN(move,m-y2);
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else move=MIN(move,y2);
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//琛告
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if (x1==x2&&((y2-y1)/fx12>0)&&((y1-y2)/fx22>0)&&fx11==fx21&&(x1+fx11*abs(y2-y1)/2.0)>=0&&(x1+fx11*abs(y2-y1)/2.0)<=n)
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{
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ansx=x1+fx11*abs(y2-y1)/2.0;
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ansy=(y1+y2)/2.0;
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break;
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}
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//告
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if (y1==y2&&((x2-x1)/fx11>0)&&((x1-x2)/fx21>0)&&fx12==fx22&&(y1+fx12*abs(x2-x1)/2.0)>=0&&(y1+fx12*abs(x2-x1)/2.0)<=m)
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{
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ansx=(x1+x2)/2.0;
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ansy=(y1+fx12*abs(x2-x1)/2.0);
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break;
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}
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x1=move*fx11+x1;
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y1=move*fx12+y1;
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x2=move*fx21+x2;
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y2=move*fx22+y2;
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if (x1==n&&fx11>0||x1==0&&fx11<0) fx11=-fx11;
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if (y1==m&&fx12>0||y1==0&&fx12<0) fx12=-fx12;
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if (x2==n&&fx21>0||x2==0&&fx21<0) fx21=-fx21;
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if (y2==m&&fx22>0||y2==0&&fx22<0) fx22=-fx22;
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}
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printf("Case #%d:\n",ii);
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if (i==410001)
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{
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printf("Collision will not happen.\n");
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continue;
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}
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else
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{
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printf("%.1lf %.1lf\n",ansx,ansy);
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}
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}
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return 0;
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}
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