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Re:高手看看我程序有啥问题,为什么总wa阿,不就是求最短路问题吗?In Reply To:Re:高手看看我程序有啥问题,为什么总wa阿,不就是求最短路问题吗? Posted by:flymouse at 2008-04-10 03:47:25 用了多case也不行阿,把原来for (k=1; k<=f; k++) ver[k][k]=MAX;的地方去了也不行,明明是简单的最短路问题,看数据的规模可以用floyd就用了floyd,图好写代码,但总wa,真打击人的,飞鼠大侠,我高中时到过你的空间学东西,现在你那个oi空间貌似找不到,能不能发你新空间的地址给我(hotrhino@163.com),题很简单,你还没做这题呢,应该半个小时不到就可以做出来了,帮帮我看看有什么问题好吗? #include<stdio.h> int main(){ int ver[505][505]; int MAX=1000000; int f,p,cow,timeS; while(scanf("%d%d%d%d",&f,&p,&cow,&timeS)!=EOF){ int i,j,k; for (i=0; i<=f; i++) for (j=0; j<=f;j++) ver[i][j]=MAX; int tmp; for (k=0; k<p; k++){ scanf("%d%d",&i,&j); scanf("%d",&tmp); if (tmp<ver[i][j]){ ver[j][i]=tmp; ver[i][j]=tmp; } }; for (k=1; k<=f;k++) for (i=1;i<=f; i++) for (j=1;j<=f; j++) if (ver[i][k]+ver[k][j]<ver[i][j]) ver[i][j]=ver[i][k]+ver[k][j]; int cowstr[500]; int count=0; for (i=1; i<=cow; i++){ scanf("%d",&cowstr[i]); if (ver[cowstr[i]][1]<=timeS) count++; } printf("%d\n",count); for (i=1; i<=cow; i++) if (ver[cowstr[i]][1]<=timeS) printf("%d\n",i); } return 1; } Followed by: Post your reply here: |
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