oj.uz

Submission #900037

# Submission time Handle Problem Language Result Execution time Memory
900037 2024-01-07T13:16:08 Z marvinthang Escape Route (JOI21_escape_route) C++17
70 / 100
 9000 ms 197052 KB 
/*************************************
*    author: marvinthang             *
*    created: 07.01.2024 16:50:40    *
*************************************/
 
#include "escape_route.h"
#include <bits/stdc++.h>
 
using namespace std;
 
#define                  fi  first
#define                  se  second
#define                left  ___left
#define               right  ___right
#define                TIME  (1.0 * clock() / CLOCKS_PER_SEC)
#define             MASK(i)  (1LL << (i))
#define           BIT(x, i)  ((x) >> (i) & 1)
#define  __builtin_popcount  __builtin_popcountll
#define              ALL(v)  (v).begin(), (v).end()
#define           REP(i, n)  for (int i = 0, _n = (n); i < _n; ++i)
#define          REPD(i, n)  for (int i = (n); i-- > 0; )
#define        FOR(i, a, b)  for (int i = (a), _b = (b); i < _b; ++i) 
#define       FORD(i, b, a)  for (int i = (b), _a = (a); --i >= _a; ) 
#define       FORE(i, a, b)  for (int i = (a), _b = (b); i <= _b; ++i) 
#define      FORDE(i, b, a)  for (int i = (b), _a = (a); i >= _a; --i) 
#define        scan_op(...)  istream & operator >> (istream &in, __VA_ARGS__ &u)
#define       print_op(...)  ostream & operator << (ostream &out, const __VA_ARGS__ &u)
#ifdef LOCAL
	#include "debug.h"
#else
	#define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
	#define DB(...) 23
	#define db(...) 23
	#define debug(...) 23
#endif
 
template <class U, class V> scan_op(pair <U, V>)  { return in >> u.first >> u.second; }
template <class T> scan_op(vector <T>)  { for (size_t i = 0; i < u.size(); ++i) in >> u[i]; return in; }
template <class U, class V> print_op(pair <U, V>)  { return out << '(' << u.first << ", " << u.second << ')'; }
template <size_t i, class T> ostream & print_tuple_utils(ostream &out, const T &tup) { if constexpr(i == tuple_size<T>::value) return out << ")";  else return print_tuple_utils<i + 1, T>(out << (i ? ", " : "(") << get<i>(tup), tup); }
template <class ...U> print_op(tuple<U...>) { return print_tuple_utils<0, tuple<U...>>(out, u); }
template <class Con, class = decltype(begin(declval<Con>()))> typename enable_if <!is_same<Con, string>::value, ostream&>::type operator << (ostream &out, const Con &con) { out << '{'; for (__typeof(con.begin()) it = con.begin(); it != con.end(); ++it) out << (it == con.begin() ? "" : ", ") << *it; return out << '}'; }
template <class A, class B> bool minimize(A &a, B b)  { return a > b ? a = b, true : false; }
template <class A, class B> bool maximize(A &a, B b)  { return a < b ? a = b, true : false; }
 
// end of template
 
const long long INF = 1e18;
 
vector <long long> calculate_necessary_time(
	int N, int M, long long S, int Q, vector <int> A, vector <int> B,
	vector <long long> L, vector <long long> C, vector <int> U,
	vector <int> V, vector <long long> T) {
	vector <vector <int>> adj(N);
	REP(i, M) {
		adj[A[i]].push_back(i);
		adj[B[i]].push_back(i);
	}

	vector <bool> used(N);
	vector dist(N, vector(N, INF)), max_time(N, vector(N, -1LL));
	REP(s, N) {
		fill(ALL(used), false);
		dist[s][s] = 0;
		REP(love, N - 1) {
			int u = -1;
			REP(i, N) if (!used[i] && (u == -1 || dist[s][i] < dist[s][u])) u = i;
			used[u] = true;
			long long x = dist[s][u] % S;
			for (int i: adj[u]) {
				int v = A[i] ^ B[i] ^ u;
				minimize(dist[s][v], dist[s][u] + L[i] + (x + L[i] > C[i] ? S - x : 0));
			}
		}

		fill(ALL(used), false);
		max_time[s][s] = S;
		REP(love, N - 1) {
			int u = -1;
			REP(i, N) if (!used[i] && (u == -1 || max_time[s][i] > max_time[s][u])) u = i;
			used[u] = true;
			for (int i: adj[u]) {
				int v = A[i] ^ B[i] ^ u;
				maximize(max_time[s][v], min(max_time[s][u], C[i]) - L[i]);
			}
		}
	}

	vector <long long> res(Q, INF);
	vector <vector <int>> queriesAt(N);
	REP(i, Q) {
		REP(w, N) if (T[i] <= max_time[w][U[i]])
			minimize(res[i], S + dist[w][V[i]] - T[i]);
		if (dist[U[i]][V[i]] < S) queriesAt[U[i]].push_back(i);
	}
	REP(s, N) {
		sort(ALL(queriesAt[s]), [&] (int x, int y) { return T[x] > T[y]; });
		vector <long long> dist(N, INF);
		dist[s] = 0;
		fill(ALL(used), false);
		priority_queue <pair <long long, int>> blocked_edge;
		for (int i: queriesAt[s]) {
			long long t = T[i];
			while (!blocked_edge.empty() && blocked_edge.top().fi >= t) {
				int i = blocked_edge.top().se;
				blocked_edge.pop();
				if (minimize(dist[A[i]], dist[B[i]] + L[i])) used[A[i]] = false;
				else if (minimize(dist[B[i]], dist[A[i]] + L[i])) used[B[i]] = false;
			}
			while (true) {
				int u = -1;
				REP(i, N) if (!used[i] && (u == -1 || dist[i] < dist[u])) u = i;
				if (u == -1) break;
				used[u] = true;
				for (int i: adj[u]) {
					int v = A[i] ^ B[i] ^ u;
					if (dist[v] <= dist[u]) continue;
					if (t + dist[u] <= C[i] - L[i]) {
						if (minimize(dist[v], dist[u] + L[i])) used[v] = false;
					} else {
						blocked_edge.emplace(C[i] - L[i] - dist[u], i);
					}
				}
			}
			minimize(res[i], dist[V[i]]);
		}
	}
	return res;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 65192 KB Output is correct
2 Correct 12 ms 65188 KB Output is correct
3 Correct 20 ms 65116 KB Output is correct
4 Correct 10 ms 65008 KB Output is correct
5 Correct 10 ms 65116 KB Output is correct
6 Correct 9 ms 65116 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1262 ms 154180 KB Output is correct
2 Correct 1360 ms 172064 KB Output is correct
3 Correct 1208 ms 152872 KB Output is correct
4 Correct 1369 ms 181276 KB Output is correct
5 Correct 1363 ms 181256 KB Output is correct
6 Correct 8 ms 65116 KB Output is correct
7 Correct 1280 ms 154120 KB Output is correct
8 Correct 333 ms 191128 KB Output is correct
9 Correct 1259 ms 153940 KB Output is correct
10 Correct 1343 ms 180868 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 65192 KB Output is correct
2 Correct 12 ms 65188 KB Output is correct
3 Correct 20 ms 65116 KB Output is correct
4 Correct 10 ms 65008 KB Output is correct
5 Correct 10 ms 65116 KB Output is correct
6 Correct 9 ms 65116 KB Output is correct
7 Correct 1262 ms 154180 KB Output is correct
8 Correct 1360 ms 172064 KB Output is correct
9 Correct 1208 ms 152872 KB Output is correct
10 Correct 1369 ms 181276 KB Output is correct
11 Correct 1363 ms 181256 KB Output is correct
12 Correct 8 ms 65116 KB Output is correct
13 Correct 1280 ms 154120 KB Output is correct
14 Correct 333 ms 191128 KB Output is correct
15 Correct 1259 ms 153940 KB Output is correct
16 Correct 1343 ms 180868 KB Output is correct
17 Correct 1371 ms 156044 KB Output is correct
18 Correct 1464 ms 155984 KB Output is correct
19 Correct 1527 ms 174024 KB Output is correct
20 Correct 1175 ms 155652 KB Output is correct
21 Correct 1565 ms 184236 KB Output is correct
22 Correct 1566 ms 182804 KB Output is correct
23 Correct 1215 ms 156244 KB Output is correct
24 Correct 410 ms 195112 KB Output is correct
25 Correct 1367 ms 156244 KB Output is correct
26 Correct 1570 ms 182948 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 65192 KB Output is correct
2 Correct 12 ms 65188 KB Output is correct
3 Correct 20 ms 65116 KB Output is correct
4 Correct 10 ms 65008 KB Output is correct
5 Correct 10 ms 65116 KB Output is correct
6 Correct 9 ms 65116 KB Output is correct
7 Correct 1262 ms 154180 KB Output is correct
8 Correct 1360 ms 172064 KB Output is correct
9 Correct 1208 ms 152872 KB Output is correct
10 Correct 1369 ms 181276 KB Output is correct
11 Correct 1363 ms 181256 KB Output is correct
12 Correct 8 ms 65116 KB Output is correct
13 Correct 1280 ms 154120 KB Output is correct
14 Correct 333 ms 191128 KB Output is correct
15 Correct 1259 ms 153940 KB Output is correct
16 Correct 1343 ms 180868 KB Output is correct
17 Correct 1371 ms 156044 KB Output is correct
18 Correct 1464 ms 155984 KB Output is correct
19 Correct 1527 ms 174024 KB Output is correct
20 Correct 1175 ms 155652 KB Output is correct
21 Correct 1565 ms 184236 KB Output is correct
22 Correct 1566 ms 182804 KB Output is correct
23 Correct 1215 ms 156244 KB Output is correct
24 Correct 410 ms 195112 KB Output is correct
25 Correct 1367 ms 156244 KB Output is correct
26 Correct 1570 ms 182948 KB Output is correct
27 Correct 3005 ms 155264 KB Output is correct
28 Correct 3741 ms 156500 KB Output is correct
29 Correct 4138 ms 176560 KB Output is correct
30 Correct 1348 ms 156284 KB Output is correct
31 Correct 4220 ms 183356 KB Output is correct
32 Correct 4266 ms 184248 KB Output is correct
33 Correct 451 ms 197052 KB Output is correct
34 Correct 3171 ms 157564 KB Output is correct
35 Correct 4205 ms 188592 KB Output is correct

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 65192 KB Output is correct
2 Correct 12 ms 65188 KB Output is correct
3 Correct 20 ms 65116 KB Output is correct
4 Correct 10 ms 65008 KB Output is correct
5 Correct 10 ms 65116 KB Output is correct
6 Correct 9 ms 65116 KB Output is correct
7 Correct 1262 ms 154180 KB Output is correct
8 Correct 1360 ms 172064 KB Output is correct
9 Correct 1208 ms 152872 KB Output is correct
10 Correct 1369 ms 181276 KB Output is correct
11 Correct 1363 ms 181256 KB Output is correct
12 Correct 8 ms 65116 KB Output is correct
13 Correct 1280 ms 154120 KB Output is correct
14 Correct 333 ms 191128 KB Output is correct
15 Correct 1259 ms 153940 KB Output is correct
16 Correct 1343 ms 180868 KB Output is correct
17 Correct 1371 ms 156044 KB Output is correct
18 Correct 1464 ms 155984 KB Output is correct
19 Correct 1527 ms 174024 KB Output is correct
20 Correct 1175 ms 155652 KB Output is correct
21 Correct 1565 ms 184236 KB Output is correct
22 Correct 1566 ms 182804 KB Output is correct
23 Correct 1215 ms 156244 KB Output is correct
24 Correct 410 ms 195112 KB Output is correct
25 Correct 1367 ms 156244 KB Output is correct
26 Correct 1570 ms 182948 KB Output is correct
27 Correct 3005 ms 155264 KB Output is correct
28 Correct 3741 ms 156500 KB Output is correct
29 Correct 4138 ms 176560 KB Output is correct
30 Correct 1348 ms 156284 KB Output is correct
31 Correct 4220 ms 183356 KB Output is correct
32 Correct 4266 ms 184248 KB Output is correct
33 Correct 451 ms 197052 KB Output is correct
34 Correct 3171 ms 157564 KB Output is correct
35 Correct 4205 ms 188592 KB Output is correct
36 Execution timed out 9079 ms 158076 KB Time limit exceeded
37 Halted 0 ms 0 KB -