标签:blog io for sp 2014 log amp as file
给出N个数,和每个数的a,b值
贪心思想,按a/b排序放置即可;
#include "stdio.h" #include "string.h" #include "algorithm" using namespace std; struct node { int a,b; double c; }data[100010]; __int64 inf=99999999999999; __int64 Mod=365*24*60*60; bool cmp(node a,node b) { return a.c<b.c; } int main() { int n,i; __int64 ans,temp; while (scanf("%d",&n)!=EOF) { if (n==0) break; for (i=0;i<n;i++) { scanf("%d%d",&data[i].a,&data[i].b); if (data[i].b==0) data[i].c=inf; else data[i].c=1.0*data[i].a/data[i].b*1.0; } sort(data,data+n,cmp); ans=temp=0; for (i=0;i<n;i++) { temp=ans; temp*=data[i].b; temp+=data[i].a; ans+=temp; ans%=Mod; } printf("%I64d\n",ans); } return 0; }
标签:blog io for sp 2014 log amp as file
原文地址:http://blog.csdn.net/u011932355/article/details/40302633