oj.uz

Submission #666253

# Submission time Handle Problem Language Result Execution time Memory
666253 2022-11-27T21:22:07 Z rainboy Escape Route (JOI21_escape_route) C++17
100 / 100
 7370 ms 241676 KB 
#include "escape_route.h"
#include <cstring>

using namespace std;

long long min(long long a, long long b) { return a < b ? a : b; }
long long max(long long a, long long b) { return a > b ? a : b; }

const int N = 90, M = N * (N - 1) / 2, Q = 3000000;
const long long INF = 0x3f3f3f3f3f3f3f3f;

typedef vector<int> vi;
typedef vector<long long> vl;

unsigned int X;

int rand_() {
	return (X *= 3) >> 1;
}

int ii[Q], jj[Q], hh[Q]; long long rr[Q];

void sort(int *hh, int l, int r) {
	while (l < r) {
		int i = l, j = l, k = r, h = hh[l + rand_() % (r - l)], tmp;
		while (j < k) {
			int c = ii[hh[j]] != ii[h] ? ii[hh[j]] - ii[h] : (rr[hh[j]] == rr[h] ? 0 : rr[hh[j]] < rr[h] ? -1 : 1);
			if (c == 0)
				j++;
			else if (c < 0) {
				tmp = hh[i], hh[i] = hh[j], hh[j] = tmp;
				i++, j++;
			} else {
				k--;
				tmp = hh[j], hh[j] = hh[k], hh[k] = tmp;
			}
		}
		sort(hh, l, i);
		l = k;
	}
}

long long ww[N][N], cc[N][N], dd1[N][N], dd2[N][N], dd[N]; int pp[N], qu[N]; char visited[N], update[N];

vl calculate_necessary_time(int n, int m, long long md, int q, vi uu_, vi vv_, vl ww_, vl cc_, vi ii_, vi jj_, vl rr_) {
	for (int i = 0; i < n; i++)
		memset(ww[i], 0x3f, n * sizeof *ww[i]);
	for (int h = 0; h < m; h++) {
		int u = uu_[h], v = vv_[h];
		ww[u][v] = ww[v][u] = ww_[h], cc[u][v] = cc[v][u] = cc_[h] - ww_[h];
	}
	for (int t = 0; t < n; t++) {
		memset(dd1[t], -1, n * sizeof *dd1[t]), dd1[t][t] = md;
		memset(visited, 0, n * sizeof *visited);
		for (int h = 0; h < n; h++) {
			int j, j_ = -1;
			for (j = 0; j < n; j++)
				if (!visited[j] && (j_ == -1 || dd1[t][j_] < dd1[t][j]))
					j_ = j;
			j = j_;
			visited[j] = 1;
			long long d = dd1[t][j];
			for (int i = 0; i < n; i++)
				if (!visited[i] && ww[i][j] != INF)
					dd1[t][i] = max(dd1[t][i], min(d - ww[i][j], cc[i][j]));
		}
	}
	for (int s = 0; s < n; s++) {
		memset(dd2[s], 0x3f, n * sizeof *dd2[s]), dd2[s][s] = 0;
		memset(visited, 0, n * sizeof *visited);
		for (int h = 0; h < n; h++) {
			int i, i_ = -1;
			for (i = 0; i < n; i++)
				if (!visited[i] && (i_ == -1 || dd2[s][i_] > dd2[s][i]))
					i_ = i;
			i = i_;
			visited[i] = 1;
			long long d = dd2[s][i];
			for (int j = 0; j < n; j++)
				if (!visited[j] && ww[i][j] != INF)
					dd2[s][j] = min(dd2[s][j], (d % md <= cc[i][j] ? d : (d + md - 1) / md * md) + ww[i][j]);
		}
	}
	for (int h = 0; h < q; h++)
		ii[h] = ii_[h], jj[h] = jj_[h], rr[h] = rr_[h];
	for (int h = 0; h < q; h++)
		hh[h] = h;
	sort(hh, 0, q);
	vl ans(q);
	for (int h = 0, h_; h < q; h = h_) {
		int s = ii[hh[h]];
		h_ = h;
		while (h_ < q && ii[hh[h_]] == s)
			h_++;
		for (int i = 0; i < n; i++)
			qu[i] = i;
		for (int h1 = h; h1 < h_; h1++) {
			int h1_ = hh[h1], t = jj[h1_];
			long long r = rr[h1_];
			int upd = h1 == h;
			for (int i = 0; i < n; i++)
				if (pp[i] != -1 && dd[pp[i]] > cc[pp[i]][i] - r) {
					upd = 1;
					break;
				}
			if (upd) {
				for (int g = 0; g < n; g++) {
					int i = qu[g];
					update[i] = h1 == h || pp[i] != -1 && (update[pp[i]] || dd[pp[i]] > cc[pp[i]][i] - r);
				}
				int m = 0;
				for (int g = 0; g < n; g++) {
					int i = qu[g], tmp;
					if (!update[i])
						tmp = qu[g], qu[g] = qu[m], qu[m] = tmp, m++;
					else
						dd[i] = INF, pp[i] = -1;
				}
				dd[s] = 0;
				for (int g = 0; g < m; g++) {
					int i = qu[g];
					long long d = dd[i], d_;
					for (int g_ = m; g_ < n; g_++) {
						int j = qu[g_];
						if (ww[i][j] != INF && d <= cc[i][j] - r && dd[j] > (d_ = d + ww[i][j]))
							dd[j] = d_, pp[j] = i;
					}
				}
				for (int g = m; g < n; g++) {
					int tmp;
					for (int g_ = g + 1; g_ < n; g_++)
						if (dd[qu[g]] > dd[qu[g_]])
							tmp = qu[g], qu[g] = qu[g_], qu[g_] = tmp;
					int i = qu[g];
					long long d = dd[i], d_;
					for (int g_ = m + 1; g_ < n; g_++) {
						int j = qu[g_];
						if (ww[i][j] != INF && d <= cc[i][j] - r && dd[j] > (d_ = d + ww[i][j]))
							dd[j] = d_, pp[j] = i;
					}
				}
			}
			ans[h1_] = dd[t];
			for (int k = 0; k < n; k++)
				if (dd1[k][s] >= r && dd2[k][t] != INF)
					ans[h1_] = min(ans[h1_], md - r + dd2[k][t]);
		}
	}
	return ans;
}

Compilation message

escape_route.cpp: In function 'vl calculate_necessary_time(int, int, long long int, int, vi, vi, vl, vl, vi, vi, vl)':
escape_route.cpp:109:41: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  109 |      update[i] = h1 == h || pp[i] != -1 && (update[pp[i]] || dd[pp[i]] > cc[pp[i]][i] - r);
      |                             ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 64980 KB Output is correct
2 Correct 26 ms 64980 KB Output is correct
3 Correct 28 ms 64980 KB Output is correct
4 Correct 25 ms 64952 KB Output is correct
5 Correct 25 ms 65036 KB Output is correct
6 Correct 25 ms 64980 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2160 ms 164728 KB Output is correct
2 Correct 2220 ms 207364 KB Output is correct
3 Correct 2176 ms 193212 KB Output is correct
4 Correct 2278 ms 213588 KB Output is correct
5 Correct 2254 ms 213912 KB Output is correct
6 Correct 24 ms 64980 KB Output is correct
7 Correct 2167 ms 191244 KB Output is correct
8 Correct 2152 ms 226272 KB Output is correct
9 Correct 2298 ms 179504 KB Output is correct
10 Correct 2351 ms 212640 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 64980 KB Output is correct
2 Correct 26 ms 64980 KB Output is correct
3 Correct 28 ms 64980 KB Output is correct
4 Correct 25 ms 64952 KB Output is correct
5 Correct 25 ms 65036 KB Output is correct
6 Correct 25 ms 64980 KB Output is correct
7 Correct 2160 ms 164728 KB Output is correct
8 Correct 2220 ms 207364 KB Output is correct
9 Correct 2176 ms 193212 KB Output is correct
10 Correct 2278 ms 213588 KB Output is correct
11 Correct 2254 ms 213912 KB Output is correct
12 Correct 24 ms 64980 KB Output is correct
13 Correct 2167 ms 191244 KB Output is correct
14 Correct 2152 ms 226272 KB Output is correct
15 Correct 2298 ms 179504 KB Output is correct
16 Correct 2351 ms 212640 KB Output is correct
17 Correct 2377 ms 189072 KB Output is correct
18 Correct 2398 ms 188120 KB Output is correct
19 Correct 2471 ms 208388 KB Output is correct
20 Correct 2323 ms 192156 KB Output is correct
21 Correct 2534 ms 213912 KB Output is correct
22 Correct 2530 ms 213400 KB Output is correct
23 Correct 2341 ms 189636 KB Output is correct
24 Correct 2133 ms 224944 KB Output is correct
25 Correct 2401 ms 176432 KB Output is correct
26 Correct 2601 ms 210584 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 64980 KB Output is correct
2 Correct 26 ms 64980 KB Output is correct
3 Correct 28 ms 64980 KB Output is correct
4 Correct 25 ms 64952 KB Output is correct
5 Correct 25 ms 65036 KB Output is correct
6 Correct 25 ms 64980 KB Output is correct
7 Correct 2160 ms 164728 KB Output is correct
8 Correct 2220 ms 207364 KB Output is correct
9 Correct 2176 ms 193212 KB Output is correct
10 Correct 2278 ms 213588 KB Output is correct
11 Correct 2254 ms 213912 KB Output is correct
12 Correct 24 ms 64980 KB Output is correct
13 Correct 2167 ms 191244 KB Output is correct
14 Correct 2152 ms 226272 KB Output is correct
15 Correct 2298 ms 179504 KB Output is correct
16 Correct 2351 ms 212640 KB Output is correct
17 Correct 2377 ms 189072 KB Output is correct
18 Correct 2398 ms 188120 KB Output is correct
19 Correct 2471 ms 208388 KB Output is correct
20 Correct 2323 ms 192156 KB Output is correct
21 Correct 2534 ms 213912 KB Output is correct
22 Correct 2530 ms 213400 KB Output is correct
23 Correct 2341 ms 189636 KB Output is correct
24 Correct 2133 ms 224944 KB Output is correct
25 Correct 2401 ms 176432 KB Output is correct
26 Correct 2601 ms 210584 KB Output is correct
27 Correct 3074 ms 183884 KB Output is correct
28 Correct 3259 ms 182316 KB Output is correct
29 Correct 3334 ms 199892 KB Output is correct
30 Correct 2625 ms 184592 KB Output is correct
31 Correct 3371 ms 200496 KB Output is correct
32 Correct 3391 ms 197912 KB Output is correct
33 Correct 2277 ms 207564 KB Output is correct
34 Correct 3112 ms 164636 KB Output is correct
35 Correct 3358 ms 191900 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 64980 KB Output is correct
2 Correct 26 ms 64980 KB Output is correct
3 Correct 28 ms 64980 KB Output is correct
4 Correct 25 ms 64952 KB Output is correct
5 Correct 25 ms 65036 KB Output is correct
6 Correct 25 ms 64980 KB Output is correct
7 Correct 2160 ms 164728 KB Output is correct
8 Correct 2220 ms 207364 KB Output is correct
9 Correct 2176 ms 193212 KB Output is correct
10 Correct 2278 ms 213588 KB Output is correct
11 Correct 2254 ms 213912 KB Output is correct
12 Correct 24 ms 64980 KB Output is correct
13 Correct 2167 ms 191244 KB Output is correct
14 Correct 2152 ms 226272 KB Output is correct
15 Correct 2298 ms 179504 KB Output is correct
16 Correct 2351 ms 212640 KB Output is correct
17 Correct 2377 ms 189072 KB Output is correct
18 Correct 2398 ms 188120 KB Output is correct
19 Correct 2471 ms 208388 KB Output is correct
20 Correct 2323 ms 192156 KB Output is correct
21 Correct 2534 ms 213912 KB Output is correct
22 Correct 2530 ms 213400 KB Output is correct
23 Correct 2341 ms 189636 KB Output is correct
24 Correct 2133 ms 224944 KB Output is correct
25 Correct 2401 ms 176432 KB Output is correct
26 Correct 2601 ms 210584 KB Output is correct
27 Correct 3074 ms 183884 KB Output is correct
28 Correct 3259 ms 182316 KB Output is correct
29 Correct 3334 ms 199892 KB Output is correct
30 Correct 2625 ms 184592 KB Output is correct
31 Correct 3371 ms 200496 KB Output is correct
32 Correct 3391 ms 197912 KB Output is correct
33 Correct 2277 ms 207564 KB Output is correct
34 Correct 3112 ms 164636 KB Output is correct
35 Correct 3358 ms 191900 KB Output is correct
36 Correct 5790 ms 170732 KB Output is correct
37 Correct 6927 ms 210208 KB Output is correct
38 Correct 3022 ms 214220 KB Output is correct
39 Correct 7370 ms 240768 KB Output is correct
40 Correct 7234 ms 231080 KB Output is correct
41 Correct 2407 ms 241676 KB Output is correct
42 Correct 6237 ms 196880 KB Output is correct
43 Correct 6713 ms 200544 KB Output is correct