oj.uz

Submission #430746

# Submission time Handle Problem Language Result Execution time Memory
430746 2021-06-17T03:21:41 Z Kevin_Zhang_TW Constellation 3 (JOI20_constellation3) C++17
35 / 100
 157 ms 48364 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;

#define int ll

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];

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

	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);
	
	dp[b][0] = alow + blow;
}

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);

	DE(l, r);
	for (auto [k, w] : dp[id])
		DE(k, w);

	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);

	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';
}

Compilation message

constellation3.cpp: In function 'll dfs(ll, ll)':
constellation3.cpp:14:17: warning: statement has no effect [-Wunused-value]
   14 | #define DE(...) 0
      |                 ^
constellation3.cpp:78:2: note: in expansion of macro 'DE'
   78 |  DE(l, r);
      |  ^~
constellation3.cpp:14:17: warning: statement has no effect [-Wunused-value]
   14 | #define DE(...) 0
      |                 ^
constellation3.cpp:80:3: note: in expansion of macro 'DE'
   80 |   DE(k, w);
      |   ^~
constellation3.cpp:79:12: warning: structured binding declaration set but not used [-Wunused-but-set-variable]
   79 |  for (auto [k, w] : dp[id])
      |            ^~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 9 ms 14424 KB Output is correct
4 Correct 10 ms 14420 KB Output is correct
5 Correct 9 ms 14412 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 9 ms 14452 KB Output is correct
8 Correct 9 ms 14412 KB Output is correct
9 Correct 9 ms 14412 KB Output is correct
10 Correct 10 ms 15084 KB Output is correct
11 Correct 11 ms 14804 KB Output is correct
12 Correct 10 ms 14808 KB Output is correct
13 Correct 10 ms 14660 KB Output is correct
14 Correct 9 ms 14668 KB Output is correct
15 Correct 11 ms 14656 KB Output is correct
16 Correct 9 ms 14412 KB Output is correct
17 Correct 8 ms 14412 KB Output is correct
18 Correct 10 ms 14924 KB Output is correct
19 Correct 9 ms 14412 KB Output is correct
20 Correct 9 ms 14412 KB Output is correct
21 Correct 10 ms 14940 KB Output is correct
22 Correct 9 ms 14416 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 9 ms 14424 KB Output is correct
4 Correct 10 ms 14420 KB Output is correct
5 Correct 9 ms 14412 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 9 ms 14452 KB Output is correct
8 Correct 9 ms 14412 KB Output is correct
9 Correct 9 ms 14412 KB Output is correct
10 Correct 10 ms 15084 KB Output is correct
11 Correct 11 ms 14804 KB Output is correct
12 Correct 10 ms 14808 KB Output is correct
13 Correct 10 ms 14660 KB Output is correct
14 Correct 9 ms 14668 KB Output is correct
15 Correct 11 ms 14656 KB Output is correct
16 Correct 9 ms 14412 KB Output is correct
17 Correct 8 ms 14412 KB Output is correct
18 Correct 10 ms 14924 KB Output is correct
19 Correct 9 ms 14412 KB Output is correct
20 Correct 9 ms 14412 KB Output is correct
21 Correct 10 ms 14940 KB Output is correct
22 Correct 9 ms 14416 KB Output is correct
23 Correct 10 ms 14668 KB Output is correct
24 Correct 10 ms 14684 KB Output is correct
25 Correct 10 ms 14684 KB Output is correct
26 Correct 10 ms 14684 KB Output is correct
27 Correct 11 ms 14668 KB Output is correct
28 Correct 11 ms 14688 KB Output is correct
29 Correct 10 ms 14688 KB Output is correct
30 Correct 13 ms 14668 KB Output is correct
31 Correct 10 ms 14668 KB Output is correct
32 Correct 90 ms 40004 KB Output is correct
33 Correct 80 ms 34500 KB Output is correct
34 Correct 57 ms 30164 KB Output is correct
35 Correct 53 ms 28256 KB Output is correct
36 Correct 98 ms 39392 KB Output is correct
37 Correct 84 ms 41916 KB Output is correct
38 Correct 18 ms 14812 KB Output is correct
39 Correct 11 ms 14924 KB Output is correct
40 Correct 82 ms 40072 KB Output is correct
41 Correct 11 ms 14796 KB Output is correct
42 Correct 11 ms 14940 KB Output is correct
43 Correct 101 ms 41816 KB Output is correct
44 Correct 11 ms 14796 KB Output is correct

Subtask #3
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14412 KB Output is correct
2 Correct 11 ms 14412 KB Output is correct
3 Correct 9 ms 14424 KB Output is correct
4 Correct 10 ms 14420 KB Output is correct
5 Correct 9 ms 14412 KB Output is correct
6 Correct 9 ms 14416 KB Output is correct
7 Correct 9 ms 14452 KB Output is correct
8 Correct 9 ms 14412 KB Output is correct
9 Correct 9 ms 14412 KB Output is correct
10 Correct 10 ms 15084 KB Output is correct
11 Correct 11 ms 14804 KB Output is correct
12 Correct 10 ms 14808 KB Output is correct
13 Correct 10 ms 14660 KB Output is correct
14 Correct 9 ms 14668 KB Output is correct
15 Correct 11 ms 14656 KB Output is correct
16 Correct 9 ms 14412 KB Output is correct
17 Correct 8 ms 14412 KB Output is correct
18 Correct 10 ms 14924 KB Output is correct
19 Correct 9 ms 14412 KB Output is correct
20 Correct 9 ms 14412 KB Output is correct
21 Correct 10 ms 14940 KB Output is correct
22 Correct 9 ms 14416 KB Output is correct
23 Correct 10 ms 14668 KB Output is correct
24 Correct 10 ms 14684 KB Output is correct
25 Correct 10 ms 14684 KB Output is correct
26 Correct 10 ms 14684 KB Output is correct
27 Correct 11 ms 14668 KB Output is correct
28 Correct 11 ms 14688 KB Output is correct
29 Correct 10 ms 14688 KB Output is correct
30 Correct 13 ms 14668 KB Output is correct
31 Correct 10 ms 14668 KB Output is correct
32 Correct 90 ms 40004 KB Output is correct
33 Correct 80 ms 34500 KB Output is correct
34 Correct 57 ms 30164 KB Output is correct
35 Correct 53 ms 28256 KB Output is correct
36 Correct 98 ms 39392 KB Output is correct
37 Correct 84 ms 41916 KB Output is correct
38 Correct 18 ms 14812 KB Output is correct
39 Correct 11 ms 14924 KB Output is correct
40 Correct 82 ms 40072 KB Output is correct
41 Correct 11 ms 14796 KB Output is correct
42 Correct 11 ms 14940 KB Output is correct
43 Correct 101 ms 41816 KB Output is correct
44 Correct 11 ms 14796 KB Output is correct
45 Runtime error 157 ms 48364 KB Execution killed with signal 6
46 Halted 0 ms 0 KB -