oj.uz

답안 #430753

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
430753 2021-06-17T03:30:59 Z Kevin_Zhang_TW 별자리 3 (JOI20_constellation3) C++17
35 / 100
 166 ms 38980 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
// My bug list :
// integer overflow
// 0based, 1based forgotten
// index out of bound
// n, m, i, j typo
// some cases are missing

const int MAX_N = 200010, MAX_M = 2005;

int n, h[MAX_N], m;
//           y, c
vector<pair<int,int>> star[MAX_N];

//ll dp[MAX_M][MAX_M];

map<int,ll> dp[MAX_N];

ll tg[MAX_N];

// merge to b
void merge_dp(int a, int b) {
	int H = h[b];

	ll alow = 0, blow = 0;
	while (dp[a].size() && dp[a].begin()->first <= H) {
		chmax(alow, dp[a].begin()->second + tg[a]);
		dp[a].erase(dp[a].begin());
	}
	while (dp[b].size() && dp[b].begin()->first <= H) {
		chmax(blow, dp[b].begin()->second + tg[b]);
		dp[b].erase(dp[b].begin());
	}

	tg[a] += blow, tg[b] += alow;

	if (dp[a].size() > dp[b].size()) {
		swap(dp[a], dp[b]), swap(tg[a], tg[b]);
	}
	for (auto [k, w] : dp[a]) {
		chmax(dp[b][k], w + tg[a] - tg[b]);
	}
//	for (auto &[k, w] : dp[a]) w += blow;
//	for (auto &[k, w] : dp[b]) w += alow;
//
//	for (auto [k, w] : dp[a])
//		chmax(dp[b][k], w);
//		//chmax(dp[b][k], w + tg[a] - tg[b]);
	
	dp[b][0] = alow + blow - tg[b];
}

int dfs(int l, int r) {
	if (l > r) return n + 1;
	if (l == r) {
		for (auto [y, c] : star[l])
			dp[l][y] = c;
		return l;
	}
	int id = l;
	for (int i = l;i <= r;++i)
		if (h[i] > h[id]) id = i;

	int ld = dfs(l, id-1), rd = dfs(id+1, r);

	for (auto [y, c] : star[id])
		dp[id][y] = c;

	merge_dp(ld, id);
	merge_dp(rd, id);

	return id;
}

ll solve() {
	int rt = dfs(1, n);

	ll sum = 0;
	for (int i = 1;i <= n;++i)
		for (auto [y, c] : star[i])
			sum += c;

	ll mxg = 0;
	for (auto [_, w] : dp[rt])
		chmax(mxg, w + tg[rt]);

	return sum - mxg;
}
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n;
	for (int i = 1;i <= n;++i)
		cin >> h[i];
	cin >> m;
	for (int x, y, c, i = 0;i < m;++i) {
		cin >> x >> y >> c;
		star[x].pb(y, c);
	}

	assert(n < MAX_M);

	cout << solve() << '\n';
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14412 KB Output is correct
2 Correct 9 ms 14360 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 10 ms 14412 KB Output is correct
5 Correct 9 ms 14396 KB Output is correct
6 Correct 9 ms 14408 KB Output is correct
7 Correct 11 ms 14412 KB Output is correct
8 Correct 9 ms 14412 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 9 ms 14412 KB Output is correct
11 Correct 9 ms 14412 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 9 ms 14412 KB Output is correct
14 Correct 9 ms 14412 KB Output is correct
15 Correct 9 ms 14412 KB Output is correct
16 Correct 9 ms 14412 KB Output is correct
17 Correct 9 ms 14360 KB Output is correct
18 Correct 9 ms 14344 KB Output is correct
19 Correct 9 ms 14412 KB Output is correct
20 Correct 9 ms 14412 KB Output is correct
21 Correct 9 ms 14412 KB Output is correct
22 Correct 10 ms 14440 KB Output is correct

Subtask #2
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14412 KB Output is correct
2 Correct 9 ms 14360 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 10 ms 14412 KB Output is correct
5 Correct 9 ms 14396 KB Output is correct
6 Correct 9 ms 14408 KB Output is correct
7 Correct 11 ms 14412 KB Output is correct
8 Correct 9 ms 14412 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 9 ms 14412 KB Output is correct
11 Correct 9 ms 14412 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 9 ms 14412 KB Output is correct
14 Correct 9 ms 14412 KB Output is correct
15 Correct 9 ms 14412 KB Output is correct
16 Correct 9 ms 14412 KB Output is correct
17 Correct 9 ms 14360 KB Output is correct
18 Correct 9 ms 14344 KB Output is correct
19 Correct 9 ms 14412 KB Output is correct
20 Correct 9 ms 14412 KB Output is correct
21 Correct 9 ms 14412 KB Output is correct
22 Correct 10 ms 14440 KB Output is correct
23 Correct 10 ms 14540 KB Output is correct
24 Correct 11 ms 14540 KB Output is correct
25 Correct 12 ms 14576 KB Output is correct
26 Correct 10 ms 14572 KB Output is correct
27 Correct 10 ms 14540 KB Output is correct
28 Correct 10 ms 14540 KB Output is correct
29 Correct 12 ms 14452 KB Output is correct
30 Correct 10 ms 14540 KB Output is correct
31 Correct 10 ms 14540 KB Output is correct
32 Correct 12 ms 14648 KB Output is correct
33 Correct 12 ms 14728 KB Output is correct
34 Correct 13 ms 14596 KB Output is correct
35 Correct 12 ms 14680 KB Output is correct
36 Correct 15 ms 14776 KB Output is correct
37 Correct 16 ms 14668 KB Output is correct
38 Correct 12 ms 14692 KB Output is correct
39 Correct 10 ms 14592 KB Output is correct
40 Correct 13 ms 14676 KB Output is correct
41 Correct 10 ms 14540 KB Output is correct
42 Correct 10 ms 14540 KB Output is correct
43 Correct 14 ms 14720 KB Output is correct
44 Correct 10 ms 14540 KB Output is correct

Subtask #3
0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 9 ms 14412 KB Output is correct
2 Correct 9 ms 14360 KB Output is correct
3 Correct 8 ms 14412 KB Output is correct
4 Correct 10 ms 14412 KB Output is correct
5 Correct 9 ms 14396 KB Output is correct
6 Correct 9 ms 14408 KB Output is correct
7 Correct 11 ms 14412 KB Output is correct
8 Correct 9 ms 14412 KB Output is correct
9 Correct 9 ms 14444 KB Output is correct
10 Correct 9 ms 14412 KB Output is correct
11 Correct 9 ms 14412 KB Output is correct
12 Correct 9 ms 14412 KB Output is correct
13 Correct 9 ms 14412 KB Output is correct
14 Correct 9 ms 14412 KB Output is correct
15 Correct 9 ms 14412 KB Output is correct
16 Correct 9 ms 14412 KB Output is correct
17 Correct 9 ms 14360 KB Output is correct
18 Correct 9 ms 14344 KB Output is correct
19 Correct 9 ms 14412 KB Output is correct
20 Correct 9 ms 14412 KB Output is correct
21 Correct 9 ms 14412 KB Output is correct
22 Correct 10 ms 14440 KB Output is correct
23 Correct 10 ms 14540 KB Output is correct
24 Correct 11 ms 14540 KB Output is correct
25 Correct 12 ms 14576 KB Output is correct
26 Correct 10 ms 14572 KB Output is correct
27 Correct 10 ms 14540 KB Output is correct
28 Correct 10 ms 14540 KB Output is correct
29 Correct 12 ms 14452 KB Output is correct
30 Correct 10 ms 14540 KB Output is correct
31 Correct 10 ms 14540 KB Output is correct
32 Correct 12 ms 14648 KB Output is correct
33 Correct 12 ms 14728 KB Output is correct
34 Correct 13 ms 14596 KB Output is correct
35 Correct 12 ms 14680 KB Output is correct
36 Correct 15 ms 14776 KB Output is correct
37 Correct 16 ms 14668 KB Output is correct
38 Correct 12 ms 14692 KB Output is correct
39 Correct 10 ms 14592 KB Output is correct
40 Correct 13 ms 14676 KB Output is correct
41 Correct 10 ms 14540 KB Output is correct
42 Correct 10 ms 14540 KB Output is correct
43 Correct 14 ms 14720 KB Output is correct
44 Correct 10 ms 14540 KB Output is correct
45 Runtime error 166 ms 38980 KB Execution killed with signal 6
46 Halted 0 ms 0 KB -