HDU 3177 Crixalis's Equipment
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题目:http://acm.hdu.edu.cn/showproblem.php?pid=3177
题意:每个物品有a体积,放进洞时要有b临时空间调整位置,看能不能放完
除了根据差值来降序排序,其他无悬念
好数据:
21 2
8 20
1 18
#include<stdio.h>#include<stdlib.h>struct node{int a,b;}c[1002];int cmpxy(const struct node *c,const struct node *d){ return (d->b - d->a) - (c->b - c->a);}int main(){ int n,i,v,t,flag;//freopen("a.txt","r",stdin);scanf("%d",&t);while(t--){scanf("%d%d",&v,&n);flag = 0;for(i=0;i<n;i++)scanf("%d%d",&c[i].a,&c[i].b);qsort(c,n,sizeof(c[0]),cmpxy);for(i=0;i<n;i++){if( v >= c[i].b)v -= c[i].a;else{flag =1;break;}}if( flag == 0)puts("Yes");elseputs("No");}return 0;}
0 0
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