제출 #117177

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
117177		Namnamseo	Hotel (CEOI11_hot)	C++17	10 / 100	336 ms	32248 KiB

hot

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int,int> pp;
typedef pair<ll,ll> pll;
void read(int& x){ scanf("%d",&x); }
void read(ll& x){ scanf("%lld",&x); }
void read(pp& x){ scanf("%d%d",&x.first, &x.second); }
void read(pll& x){ scanf("%lld%lld",&x.first, &x.second); }
template<typename T,typename... Args>
void read(T& a,Args&... b){ read(a); read(b...); }
void cppio(){ ios_base::sync_with_stdio(0); cin.tie(0); }
#define all(x) (x).begin(),(x).end()
#define pb push_back
#define eb emplace_back
#define x first
#define y second
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rrep(i,n) for(int i = 1; i <= (n); ++i)
#define sz(x) (int)(x).size()

const int inf = int(1e9) + 10;

struct tree {
	const static int M = 524288;
	pp t[M<<1];

	void init() {
		fill(t, t+(2*M), pp(-inf, -1));
	}

	pp rmax(int l, int r) {
		pp ret(-inf, -1);
		for(l+=M, r+=M; l<=r; l/=2, r/=2) {
			if(l%2==1) ret=max(ret, t[l++]);
			if(r%2==0) ret=max(ret, t[r--]);
		}

		return ret;
	}

	void put(int p, pp v) {
		for(p+=M; p; p /= 2) {
			t[p] = max(t[p], v);
		}
	}

	void reset(int p) {
		p += M;
		t[p] = pp(-inf, -1);
		for(p/=2; p; p/=2) {
			t[p] = max(t[p*2], t[p*2+1]);
		}
	}
} T;

int n, m;
const int maxn = int(5e5) + 10;

pp room[maxn];
pp req[maxn];

int main()
{
	int o;
	cppio(); cin >> n >> m >> o;
	rrep(i, n) { cin >> room[i].x >> room[i].y; }
	rrep(i, m) { cin >> req[i].y >> req[i].x; }

	sort(room+1, room+n+1);
	sort(req+1, req+m+1);

	rrep(i, m) T.put(i, pp(req[i].y, i));

	ll ans = 0;
	int match = 0;
	for(int i=1; match<=o && i<=n; ++i) {
		int to = lower_bound(req+1, req+m+1, pp(room[i].y+1, -1)) - req;
		pp m = T.rmax(1, to-1);
		if(m.y == -1) continue;
		int df = m.x - room[i].x;
		if(df < 0) continue;
		if(0) printf("For room (cost=%d, size=%d), we choose request (minsize=%d, gain=%d)\n",
			room[i].x, room[i].y, req[m.y].x, req[m.y].y);
		ans += df;
		++match;
		T.reset(m.y);
	}

	cout << ans << endl;
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

hot.cpp: In function 'void read(int&)':
hot.cpp:6:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 void read(int& x){ scanf("%d",&x); }
                    ~~~~~^~~~~~~~~
hot.cpp: In function 'void read(ll&)':
hot.cpp:7:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 void read(ll& x){ scanf("%lld",&x); }
                   ~~~~~^~~~~~~~~~~
hot.cpp: In function 'void read(pp&)':
hot.cpp:8:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 void read(pp& x){ scanf("%d%d",&x.first, &x.second); }
                   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
hot.cpp: In function 'void read(pll&)':
hot.cpp:9:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
 void read(pll& x){ scanf("%lld%lld",&x.first, &x.second); }
                    ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10