hdu 1160 FatMouse's Speed
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找出体重不断增加,速度不断下降的最大子集
#include<stdio.h>#include<stdlib.h>struct op{ int x; int w,v; int point,nuber;}p[2000];int cmp(const void *a,const void *b){ struct op *c,*d; c=(struct op *)a; d=(struct op *)b; if(c->w==d->w) return d->v-c->v; return d->w-c->w;}int main(){ int n,i,j,v,a,k,max; i=0; while(scanf("%d%d",&p[i].w,&p[i].v)!=EOF) { p[i].nuber=1;p[i].x=i++; } n=i;p[0].point=0; qsort(p,n,sizeof(p[0]),cmp); max=0;k=0; for(i=0;i<n;i++) for(j=0;j<i;j++) { if(p[i].w<p[j].w&&p[i].v>p[j].v&&p[i].nuber<p[j].nuber+1) { p[i].nuber=p[j].nuber+1; p[i].point=j; } if(max<=p[i].nuber){max=p[i].nuber;k=i;} } printf("%d\n",max); for(i=1;i<=max;i++) { printf("%d\n",p[k].x+1); k=p[k].point; } return 0;}
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