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帮我看下到底是什么错误,测试数据都对啊#include <iostream> #include <stdio.h> using namespace std; struct POINT { int x; int y; }; struct node { POINT a; POINT b; int n; }; int max(int x,int y) { return x>y?x:y; } int min(int x,int y) { return x<y?x:y; } double solve(POINT sp,POINT ep,POINT op) { return((sp.x-op.x)*(ep.y-op.y)-(ep.x-op.x)*(sp.y-op.y)); } bool ans(node m,node n) { return( (max(m.a.x,m.b.x)>=min(n.a.x,n.b.x))&& (max(n.a.x,n.b.x)>=min(m.a.x,m.b.x))&& (max(m.a.y,m.b.y)>=min(n.a.y,n.b.y))&& (max(n.a.y,n.b.y)>=min(m.a.y,m.b.y))&& (solve(n.a,m.b,m.a)*solve(m.b,n.b,m.a)>=0)&& (solve(m.a,n.b,n.a)*solve(n.b,m.b,n.a)>=0) ); } int main() { int num,i,j,k; node temp[20]; bool flag; while(scanf("%d",&num)&&num) { memset(temp,0,sizeof(temp)); for(i=0;i<num;i++) { scanf("%d%d%d%d",&temp[i].a.x,&temp[i].a.y,&temp[i].b.x,&temp[i].b.y); temp[i].n=i; } for(i=0;i<num;i++) { for(j=0;j<num;j++) { flag=ans(temp[i],temp[j]) ; if(flag) { temp[j].n=temp[i].n; } } } while(scanf("%d%d",&i,&j)) { if(i==0&&j==0) { break; } else { if(temp[i-1].n==temp[j-1].n) { printf("CONNECTED\n"); } else { printf("NOT CONNECTED\n"); } } } } return 0; } Followed by: Post your reply here: |
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