Submission #572172

#	Time	Username	Problem	Language	Result	Execution time	Memory
572172		sidon	Two Dishes (JOI19_dishes)	C++17	0 / 100	303 ms	72664 KiB

dishes

#include <bits/stdc++.h>
using namespace std;
#define int long long

int32_t main() {
	ios::sync_with_stdio(0), cin.tie(0);

	int N, M; cin >> N >> M;

	int A[N], S[N], P[N];
	int B[M], T[M], Q[M];

	for(int i = 0; i < N; ++i) {
		cin >> A[i] >> S[i] >> P[i];
		if(i) A[i] += A[i-1];
	}

	for(int i = 0; i < M; ++i) {
		cin >> B[i] >> T[i] >> Q[i];
		if(i) B[i] += B[i-1];
	}

	map<int, int> g[N+1] {{{0, 0}}};
	int ans {};

	for(int i = 0; i < N; ++i) if(S[i] >= A[i]) {
		S[i] = upper_bound(B, B + M, S[i] - A[i]) - B;
		g[i+1][S[i]] += P[i];
	}
	for(int i = 0; i < M; ++i) if(T[i] >= B[i]) {
		T[i] = upper_bound(A, A + N, T[i] - B[i]) - A;
		if(T[i] < N) g[T[i]+1][i] -= Q[i];
		ans += Q[i];
	}

	map<int, int> s {{1, -1e17}};

	for(int i = 1; i <= N; ++i) {
		g[i][M+1] = 0;

		int cur {}, last = 1e17, l {};
		auto p = begin(g[i-1]);

		for(auto [r, val] : g[i]) cur += val;
		for(auto [r, val] : g[i]) {
			s[l] += cur;
			s[r+1] -= cur;

			auto fix = [&](int j) {
				auto f = s.upper_bound(j);
				while(f != s.end() && f->first <= r && f->second <= 0) {
					auto nx = next(f) == end(s) ? r + 1 : next(f)->first;
					s[nx] += f->second;
					f = s.erase(f);
				}
			};

			if(s[l] < 0) {
				s[l+1] += s[l];
				s[l] = 0;
				fix(l);
			}

			cur -= last = val;

			for(; p != end(g[i-1]) && p->first <= r; p++)
				fix(p->first);

			l = r + 1;
		}
	}

	for(int i = 0; i <= M; ++i)
		ans += s[i];
	cout << ans;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 3
• Subtask 3: 0 / 7
• Subtask 4: 0 / 39
• Subtask 5: 0 / 11
• Subtask 6: 0 / 9
• Subtask 7: 0 / 17
• Subtask 8: 0 / 9