oj.uz

Submission #512318

# Submission time Handle Problem Language Result Execution time Memory
512318 2022-01-16T09:19:50 Z rk42745417 Fireworks (APIO16_fireworks) C++17
100 / 100
 270 ms 101488 KB 
/*
--------------              |   /
      |                     |  /
      |                     | /
      |             *       |/          |    |         ------            *
      |                     |           |    |        /      \
      |             |       |\          |    |       |       |\          |
   \  |             |       | \         |    |       |       | \         |
    \ |             |       |  \        |    |        \     /   \        |
     V              |       |   \        \__/|         -----     \       |
*/
#include <bits/stdc++.h>
using namespace std;
#define debug(x) cerr << "\e[1;31m" << #x << " = " << (x) << "\e[0m\n"
#define print(x) emilia_mata_tenshi(#x, begin(x), end(x))
template<typename T> void emilia_mata_tenshi(const char *s, T l, T r) {
	cerr << "\e[1;33m" << s << " = [";
	while(l != r) {
		cerr << *l;
		cerr << (++l == r ? ']' : ',');
	}
	cerr << "\e[0m\n";
}

#define EmiliaMyWife ios::sync_with_stdio(0); cin.tie(NULL);
using ll = int64_t;
using ull = uint64_t;
using ld = long double;
using uint = uint32_t;
const double EPS  = 1e-7;
const int INF     = 0x3F3F3F3F;
const ll LINF     = 4611686018427387903;
const int MOD     = 1e9+7;
static int Lamy_is_cute = []() {
	EmiliaMyWife
	return 48763;
}();
/*--------------------------------------------------------------------------------------*/

struct dat {
	priority_queue<ll> slope;
	ll l = 0, r = 0;
	ll zero_ans = 0;
	int zero_slope = 0;
	inline int size() { return slope.size(); }
	void shift(int c) {
		while(slope.size() > zero_slope)
			slope.pop();
		if(zero_slope == 0) {
			zero_slope++;
		}
		else
			slope.pop();
		l += c, r += c;
		slope.push(l);
		slope.push(r);
		zero_ans += c;
	}
	void update() {
		while(slope.size() > zero_slope + 1)
			slope.pop();
		ll a = slope.top(); slope.pop();
		l = slope.top();
		r = a;
		slope.push(a);
	}
	void merge(dat b) {
		while(!b.slope.empty()) {
			slope.push(b.slope.top());
			b.slope.pop();
		}
		zero_ans += b.zero_ans;
		zero_slope += b.zero_slope;
	}
};

signed main() {
	int n, m;
	cin >> n >> m;
	n += m;
	vector<vector<pair<int, int>>> edge(n + 1);
	for(int i = 2; i <= n; i++) {
		int p, c;
		cin >> p >> c;
		edge[p].push_back({i, c});
	}
	vector<dat> arr(n + 1);
	function<void(int)> dfs = [&](int u) {
		if(edge[u].empty())
			return;
		for(const auto &[v, c] : edge[u]) {
			dfs(v);
			arr[v].shift(c);
			if(arr[u].slope.empty()) {
				swap(arr[u], arr[v]);
				continue;
			}
			if(arr[v].size() > arr[u].size())
				swap(arr[u], arr[v]);
			arr[u].merge(arr[v]);
		}

		arr[u].update();

		/* debug
		debug(u);
		ll cur = arr[u].zero_ans, sl = -arr[u].zero_slope;
		vector<ll> ch;
		while(!arr[u].slope.empty()) {
			ch.push_back(arr[u].slope.top());
			arr[u].slope.pop();
		}
		for(ll a : ch)
			arr[u].slope.push(a);
		reverse(ch.begin(), ch.end());
		ll prv = 0;
		print(ch);
		debug(cur);
		debug(sl);
		for(ll a : ch) {
			cur += (a - prv) * sl;
			sl++;
			cerr << a << ' ' << cur << '\n';
			if(sl == 0)
				break;
			prv = a;
		}
		cerr << "-------------------\n";
		*/
	};
	dfs(1);
	ll cur = arr[1].zero_ans, sl = -arr[1].zero_slope;
	vector<ll> ch;
	while(!arr[1].slope.empty()) {
		ch.push_back(arr[1].slope.top());
		arr[1].slope.pop();
	}
	reverse(ch.begin(), ch.end());
	ll prv = 0;
	/* debug
	print(ch);
	debug(cur);
	debug(sl);
	*/
	for(ll a : ch) {
		cur += (a - prv) * sl;
		sl++;
		//cerr << a << ' ' << cur << '\n';
		if(sl == 0)
			break;
		prv = a;
	}
	cout << cur << '\n';
}

Compilation message

fireworks.cpp: In member function 'void dat::shift(int)':
fireworks.cpp:47:22: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   47 |   while(slope.size() > zero_slope)
      |         ~~~~~~~~~~~~~^~~~~~~~~~~~
fireworks.cpp: In member function 'void dat::update()':
fireworks.cpp:60:22: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |   while(slope.size() > zero_slope + 1)
      |         ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 312 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 316 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 308 KB Output is correct
14 Correct 1 ms 316 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 316 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 312 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 316 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 316 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 304 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 2 ms 580 KB Output is correct
34 Correct 2 ms 716 KB Output is correct
35 Correct 2 ms 844 KB Output is correct
36 Correct 3 ms 960 KB Output is correct
37 Correct 4 ms 1072 KB Output is correct
38 Correct 4 ms 1100 KB Output is correct
39 Correct 3 ms 1068 KB Output is correct
40 Correct 3 ms 1996 KB Output is correct
41 Correct 3 ms 1992 KB Output is correct
42 Correct 2 ms 972 KB Output is correct
43 Correct 4 ms 1484 KB Output is correct
44 Correct 3 ms 1356 KB Output is correct
45 Correct 5 ms 1356 KB Output is correct
46 Correct 4 ms 1228 KB Output is correct
47 Correct 4 ms 1228 KB Output is correct
48 Correct 3 ms 1100 KB Output is correct
49 Correct 3 ms 1228 KB Output is correct
50 Correct 5 ms 972 KB Output is correct
51 Correct 3 ms 964 KB Output is correct
52 Correct 4 ms 1100 KB Output is correct
53 Correct 3 ms 1100 KB Output is correct
54 Correct 3 ms 1100 KB Output is correct

Subtask #4
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 312 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 312 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 316 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 316 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 304 KB Output is correct
31 Correct 1 ms 460 KB Output is correct
32 Correct 1 ms 460 KB Output is correct
33 Correct 2 ms 580 KB Output is correct
34 Correct 2 ms 716 KB Output is correct
35 Correct 2 ms 844 KB Output is correct
36 Correct 3 ms 960 KB Output is correct
37 Correct 4 ms 1072 KB Output is correct
38 Correct 4 ms 1100 KB Output is correct
39 Correct 3 ms 1068 KB Output is correct
40 Correct 3 ms 1996 KB Output is correct
41 Correct 3 ms 1992 KB Output is correct
42 Correct 2 ms 972 KB Output is correct
43 Correct 4 ms 1484 KB Output is correct
44 Correct 3 ms 1356 KB Output is correct
45 Correct 5 ms 1356 KB Output is correct
46 Correct 4 ms 1228 KB Output is correct
47 Correct 4 ms 1228 KB Output is correct
48 Correct 3 ms 1100 KB Output is correct
49 Correct 3 ms 1228 KB Output is correct
50 Correct 5 ms 972 KB Output is correct
51 Correct 3 ms 964 KB Output is correct
52 Correct 4 ms 1100 KB Output is correct
53 Correct 3 ms 1100 KB Output is correct
54 Correct 3 ms 1100 KB Output is correct
55 Correct 8 ms 2328 KB Output is correct
56 Correct 33 ms 8124 KB Output is correct
57 Correct 58 ms 13328 KB Output is correct
58 Correct 83 ms 17244 KB Output is correct
59 Correct 115 ms 22572 KB Output is correct
60 Correct 144 ms 27828 KB Output is correct
61 Correct 174 ms 32224 KB Output is correct
62 Correct 222 ms 35564 KB Output is correct
63 Correct 234 ms 42232 KB Output is correct
64 Correct 239 ms 44272 KB Output is correct
65 Correct 133 ms 101488 KB Output is correct
66 Correct 136 ms 101384 KB Output is correct
67 Correct 122 ms 40552 KB Output is correct
68 Correct 188 ms 75000 KB Output is correct
69 Correct 239 ms 70492 KB Output is correct
70 Correct 241 ms 70308 KB Output is correct
71 Correct 225 ms 60744 KB Output is correct
72 Correct 270 ms 60648 KB Output is correct
73 Correct 201 ms 57040 KB Output is correct
74 Correct 205 ms 57240 KB Output is correct
75 Correct 221 ms 55576 KB Output is correct
76 Correct 213 ms 55708 KB Output is correct
77 Correct 215 ms 54116 KB Output is correct
78 Correct 200 ms 52984 KB Output is correct
79 Correct 232 ms 52444 KB Output is correct