HDU 3177 Crixalis's Equipment
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这是一道贪心的题目。此题关键是找到所需要的最少空间,即:移动空间-占用空间,然后从大到小排序。想通这一步就简单了。
struct sa{ int a; int b;} data[1000];int cmp(sa x,sa y){ return x.b-x.a>y.b-y.a;}#include<stdio.h>#include<algorithm>using namespace std;int main(){ int t; while(scanf("%d",&t)!=EOF) { while(t--) { int v,n,flag=0; scanf("%d%d",&v,&n); for(int c=0; c<n; c++) scanf("%d%d",&data[c].a,&data[c].b); sort(data,data+n,cmp); for(int d=0; d<n; d++) { if(v-data[d].b<0) { flag=1; break; } if((v-=data[d].a)<0) { flag=1; break; } } if(flag) printf("No\n"); else printf("Yes\n"); } } return 0;}
- hdu 3177 - Crixalis's Equipment
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