oj.uz

Submission #200826

# Submission time Handle Problem Language Result Execution time Memory
200826 2020-02-08T09:16:06 Z maruii Long Distance Coach (JOI17_coach) C++14
0 / 100
 73 ms 117752 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<ll, ll>;
#define ff first
#define ss second

int N, M;
struct CHT {
	struct Node {
		pii L;
		int l, r;
		Node() : L(pii(0, 1e18)), l(-1), r(-1) {}
	} A[5000005];
	ll f(pii L, int x) { return L.ff * x + L.ss; }
	int cnt;
	void update(int nn, int s, int e, pii L2) {
		pii &L1 = A[nn].L;
		if (f(L1, s) > f(L2, s)) swap(L1, L2);
		if (f(L1, e) <= f(L2, e)) return;
		int m = s + e >> 1;
		if (f(L1, m) > f(L2, m)) {
			swap(L1, L2);
			if (A[nn].l < 0) A[nn].l = ++cnt;
			update(A[nn].l, s, m, L1);
		}
		else {
			if (A[nn].r < 0) A[nn].r = ++cnt;
			update(A[nn].r, m + 1, e, L2);
		}
	}
	void update(ll a, ll b) { update(0, 0, M, pii(a, b)); }
	ll query(int nn, int s, int e, int x) {
		if (nn < 0 || s > x || e < x) return 1e18;
		ll ret = f(A[nn].L, x);
		int m = s + e >> 1;
		return min({ret, query(A[nn].l, s, m, x), query(A[nn].r, m + 1, e, x)});
	}
	ll query(int x) { return query(0, 0, M, x); }
} cht;
ll X, T, W;
pii R[200005], P[200005];
ll D[200005], H[200005], S[200005];
int main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> X >> N >> M >> W >> T;
	for (int i = 0; i < N; ++i) {
		ll x; cin >> x;
		R[i] = {x % T, x / T};
	}
	for (int i = 1; i <= M; ++i) cin >> P[i].ff >> P[i].ss;
	R[N] = {X % T, X / T};
	sort(R, R + N + 1);
	sort(P + 1, P + M + 1);
	for (int i = 1; i <= M; ++i) {
		S[i] = S[i - 1] + P[i].ss;
		H[i] = X / T + (X % T >= P[i].ff);
	}
	H[0] = X / T + 1;
	for (int i = M, j = N; i; --i) {
		while (j >= 0 && R[j].ff > P[i].ff) {
			cht.update(-W * R[j].ss, D[i + 1] + S[i] + W * i * R[j].ss);
			--j;
		}
		D[i] = min(cht.query(i - 1) - S[i - 1], D[i + 1] + H[i] * W);
	}
	cout << D[1] + H[0] * W;
	return 0;
}

Compilation message

coach.cpp: In member function 'void CHT::update(int, int, int, pii)':
coach.cpp:21:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = s + e >> 1;
           ~~^~~
coach.cpp: In member function 'll CHT::query(int, int, int, int)':
coach.cpp:36:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int m = s + e >> 1;
           ~~^~~

Subtask #1
0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 117752 KB Output is correct
2 Correct 70 ms 117752 KB Output is correct
3 Correct 67 ms 117752 KB Output is correct
4 Correct 67 ms 117752 KB Output is correct
5 Correct 68 ms 117752 KB Output is correct
6 Correct 73 ms 117752 KB Output is correct
7 Incorrect 71 ms 117752 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 117752 KB Output is correct
2 Correct 70 ms 117752 KB Output is correct
3 Correct 67 ms 117752 KB Output is correct
4 Correct 67 ms 117752 KB Output is correct
5 Correct 68 ms 117752 KB Output is correct
6 Correct 73 ms 117752 KB Output is correct
7 Incorrect 71 ms 117752 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 117752 KB Output is correct
2 Correct 70 ms 117752 KB Output is correct
3 Correct 67 ms 117752 KB Output is correct
4 Correct 67 ms 117752 KB Output is correct
5 Correct 68 ms 117752 KB Output is correct
6 Correct 73 ms 117752 KB Output is correct
7 Incorrect 71 ms 117752 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 117752 KB Output is correct
2 Correct 70 ms 117752 KB Output is correct
3 Correct 67 ms 117752 KB Output is correct
4 Correct 67 ms 117752 KB Output is correct
5 Correct 68 ms 117752 KB Output is correct
6 Correct 73 ms 117752 KB Output is correct
7 Incorrect 71 ms 117752 KB Output isn't correct
8 Halted 0 ms 0 KB -