QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#471601#7523. Partially Free Meal333zhanRE 14ms116220kbC++202.9kb2024-07-10 22:59:382024-07-10 22:59:38

Judging History

你现在查看的是最新测评结果

  • [2024-07-10 22:59:38]
  • 评测
  • 测评结果:RE
  • 用时:14ms
  • 内存:116220kb
  • [2024-07-10 22:59:38]
  • 提交

answer

#include <bits/stdc++.h>
#define int long long

using namespace std;

const int N = 2E5 + 10; 
const int inf = 1E18; 

inline int read () {
    int w = 1, s = 0; char ch = getchar ();
    for (; ! isdigit (ch); ch = getchar ()) if (ch == '-') w = -1;
    for (; isdigit (ch); ch = getchar ()) s = (s << 1) + (s << 3) + (ch ^ 48);
    return s * w;
}

struct Tree {
	int l, r;
	int sum = 0;
	int cnt = 0;
} tr[N * 18];

int idx = 0;
int root[N];

vector <int> all;

// int build (int l, int r) {
// 	int q = ++ idx;
// 	if (l == r) {
// 		return q;
// 	}
// 	int mid = (l + r) / 2;
// 	tr[q].l = build (l, mid);
// 	tr[q].r = build (mid + 1, r);
// 	return q;
// }

int insert (int p, int l, int r, int x, int y) {
	int q = ++ idx;
	tr[q] = tr[p];
	tr[q].sum += y;
	tr[q].cnt ++;
	if (l == r) {
		return q;
	}
	int mid = (l + r) / 2;
	if (x <= mid) {
		tr[q].l = insert (tr[p].l, l, mid, x, y);
	} else {
		tr[q].r = insert (tr[p].r, mid + 1, r, x, y);
	}
	return q;
}

int query (int v1, int v2, int l, int  r, int k) {
	if (l == r) {
		return all[l] * k;
	}
	int cnt = tr[tr[v2].l].cnt - tr[tr[v1].l].cnt;
	int mid = (l + r) / 2;
	if (k <= cnt) {
		return query (tr[v1].l, tr[v2].l, l, mid, k);
	} else {
		return tr[tr[v2].l].sum - tr[tr[v1].l].sum + query (tr[v1].r, tr[v2].r, mid + 1, r, k - cnt);
	}
}

void solve () {
	int n = read ();
	
	vector <pair <int, int>> p (n + 1);
	for (int i = 1; i <= n; i ++) {
		p[i].first = read ();
		p[i].second = read ();
		all.push_back (p[i].first);
	}
	sort (p.begin (), p.end (),
        [&] (pair <int, int> x, pair <int, int> y) {
            return x.second < y.second;
        }
    );
	
	sort (all.begin (), all.end ());
    all.erase (unique (all.begin (), all.end ()), all.end ());

	const int N = all.size ();

	auto find = [&] (int x) -> int {
        return lower_bound (all.begin (), all.end (), x) - all.begin ();// + 1;
    };

	// root[0] = build (0, N - 1);
	for (int i = 1; i <= n; i ++) {
		root[i] = insert (root[i - 1], 0, N - 1, find (p[i].first), p[i].first);
	}
    
    vector <int> ans (n + 1);
    
    auto solve = [&] (auto &&self, int xl, int xr, int yl, int yr) -> void {
		if (xl > xr) {
			return;
		}
		int mid = (xl + xr) / 2;
		int minn = inf;
		int id;
		for (int i = max (mid, yl); i <= yr; i ++) {
			int sum = query (root[0], root[i - 1], 0, N - 1, mid - 1);
			sum += p[i].first + p[i].second;
			if (sum < minn) {
				id = i;
				minn = sum;
			} 
		}
		ans[mid] = minn;
		self (self, xl, mid - 1, yl, id);
		self (self, mid + 1, xr, id, yr);
	};
	solve (solve, 1, n, 1, n); 
	
	for (int i = 1; i <= n; i ++) {
		printf ("%lld\n", ans[i]);
	}
}

signed main () {
	// ios::sync_with_stdio (false);
    // cin.tie (nullptr);
    
	int T = 1; 
	// cin >> T;
	// T = read ();

	while (T --) {
		solve ();
	}
	
	return 0;
}

详细

Test #1:

score: 100
Accepted
time: 14ms
memory: 116220kb

input:

3
2 5
4 3
3 7

output:

7
11
16

result:

ok 3 lines

Test #2:

score: -100
Runtime Error

input:

200000
466436993 804989151
660995237 756645598
432103296 703610564
6889895 53276988
873617076 822481192
532911431 126844295
623111499 456772252
937464699 762157133
708503076 786039753
78556972 5436013
582960979 398984169
786333369 325119902
930705057 615928139
924915828 506145001
164984329 208212435...

output:


result: