Codeforces Round #222 (Div. 1) B – Preparing for the Contest - 服务器托管|北京服务器租用|机房托管租用|IDC托管租用|机房机柜带宽租用-价格及费用咨询

先二分，输入排序，然后对于确定的天数，贪心判断是否可行。

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 
#define maxn 500005
#define maxm 300005
#define eps 1e-3
#define mod 9999677
#define INF 0x3f3f3f3f
#define PI (acos(-1.0))
#define lowbit(x) (x&(-x))
#define mp make_pair
#define ls o
#pragma comment(linker, "/STACK:16777216")
typedef long long LL;
typedef unsigned long long ULL;
using namespace std;
LL qpow(LL a, LL b){LL res=1,base=a;while(b){if(b%2)res=res*base;base=base*base;b/=2;}return res;}
LL powmod(LL a, LL b){LL res=1,base=a;while(b){if(b%2)res=res*base%mod;base=base*base%mod;b/=2;}return res;}
//head

struct node
{
	int a, b, c, id;
}aa[maxn], a[maxn];
set > s;
int ans[maxn];
int n, m, price;

void read()
{
	scanf("%d%d%d", &n, &m, &price);
	for(int i = 0; i  b.a;
}

int cmp2(node a, node b)
{
	return a.b > b.b;
}

bool check(int x)
{
	int ok = 1, cnt = price;
	s.clear();
	for(int i = 0, j = 0; i = a[i].a) s.insert(mp(aa[j].c, aa[j].id)), j++;
		if(!s.empty() && cnt >= s.begin()->first) cnt -= s.begin()->first, s.erase(s.begin());
		else ok = 0;
	}
	return ok;
}

void work()
{
	sort(a, a+m, cmp1);
	sort(aa, aa+n, cmp2);
	int bot = 1, top = m, mid, res = -1;
	while(top >= bot) {
		int mid = (top + bot) >> 1;
		if(check(mid)) res = mid, top = mid-1;
		else bot = mid+1;
	}
	if(res == -1) printf("NOn");
	else {
		printf("YESn");
		int cnt = price;
		s.clear();
		for(int i = 0, j = 0; i = a[i].a) s.insert(mp(aa[j].c, aa[j].id)), j++;
			int t = s.begin()->second;
			for(int k = i; k first, s.erase(s.begin());
		}
		for(int i = 0; i

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