oj.uz

Submission #374133

# Submission time Handle Problem Language Result Execution time Memory
374133 2021-03-06T17:54:27 Z MetB Wombats (IOI13_wombats) C++14
100 / 100
 8339 ms 101680 KB 
#include "wombats.h"
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
 
using namespace __gnu_pbds;
 
using namespace std;
 
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
 
const ll N = 2000001;
const ll INF = 1e18, MOD = 1e9 + 7, MOD2 = 1e6 + 3;
const int bl = 40;

int R, C, hor[5000][200], ver[5000][200], dp[bl][200];
int Rbl;

struct cut {
	vector<vector<ll>> d;

	cut() {
		for (int i = 0; i < C; i++)
			d.push_back(vector<ll>(C, INF));
	}

	cut(int pos) {

		for (int i = 0; i < C; i++) {
			d.push_back(vector<ll>(C));
		}

		int offset = bl * pos;

		for (int k = 0; k < C; k++) {
			dp[0][k] = 0;

			for (int i = k + 1; i < C; i++)
				dp[0][i] = dp[0][i-1] + hor[offset][i-1];

			for (int i = k - 1; i >= 0; i--)
				dp[0][i] = dp[0][i+1] + hor[offset][i];

			for (int i = 1; i < min(R - offset, bl); i++) {
				dp[i][0] = dp[i-1][0] + ver[offset+i-1][0];

				for (int j = 1; j < C; j++) {
					dp[i][j] = min(dp[i-1][j] + ver[offset+i-1][j], 
								   dp[i][j-1] + hor[offset+i][j-1]);
				}

				for (int j = C - 2; j >= 0; j--) {
					dp[i][j] = min(dp[i][j], dp[i][j+1] + hor[offset+i][j]);
				}
			}

			for (int i = 0; i < C; i++) {
				d[k][i] = dp[min(R - offset, bl)-1][i];
			}
		}
	}

	vector<ll>& operator[](int x) {
		return d[x];
	}
};

cut merge(cut dl, cut dr, int pos) {
	cut d;

	pos = bl * (pos + 1) - 1;

	vector<int> opt(C, -1), optr(C, -1);

	for (int i = 0; i < C; i++) {
		for (int j = 0; j < C; j++) {
			if (d[i][i] > dl[i][j] + ver[pos][j] + dr[j][i]) {
				optr[i] = opt[i] = j; 
				d[i][i] = dl[i][j] + ver[pos][j] + dr[j][i];
			}
		}
	}

	for (int k = 1; k < C; k++) {

		for (int i = 0; i + k < C; i++) {
			for (int j = opt[i]; j <= opt[i+1]; j++) {
				if (d[i][i+k] > dl[i][j] + ver[pos][j] + dr[j][i+k]) {
					opt[i] = j; 
					d[i][i+k] = dl[i][j] + ver[pos][j] + dr[j][i+k];
				}
			}
		}

		for (int i = C - k - 1; i >= 0; i--) {
			int r = optr[i+k];
			for (int j = optr[i+k-1]; j <= r; j++) {
				if (d[i+k][i] > dl[i+k][j] + ver[pos][j] + dr[j][i]) {
					optr[i+k] = j; 
					d[i+k][i] = dl[i+k][j] + ver[pos][j] + dr[j][i];
				}
			}
		}
	}

	return d;
}

struct DynamicGrid {
	int start;
	vector<cut> t;

	void build() {
		start = 1;
		while (start < Rbl) start <<= 1;
		t.resize(2 * start);
		build(1, 0, start - 1, Rbl);
	}

	void build(int node, int tl, int tr, int sz) {
		if (sz <= tl || tl == tr) {
			t[node] = cut(tl);
			return;
		}

		int tm = (tl + tr) / 2;

		build(2 * node, tl, tm, sz);
		build(2 * node + 1, tm + 1, tr, sz);
		if (sz <= tm + 1) t[node] = t[2 * node];
		else t[node] = merge(t[2 * node], t[2 * node + 1], tm);
	}

	void update(int x) {
		update(1, 0, start - 1, x);
	}

	void update(int node, int tl, int tr, int x) {
		if (tl == tr) {
			t[node] = cut(x);
			return;
		} 

		int tm = (tl + tr) / 2;

		if (x <= tm) update(2 * node, tl, tm, x);
		else update(2 * node + 1, tm + 1, tr, x);

		if (Rbl <= tm + 1) t[node] = t[2 * node];
		else t[node] = merge(t[2 * node], t[2 * node + 1], tm);
	}

	int get(int a, int b) {
		return t[1][a][b];
	}
} t;

void init(int r, int c, int H[5000][200], int V[5000][200]) {
	R = r, C = c;

	Rbl = (R + bl - 1) / bl;

	for (int i = 0; i < R; i++)
		for (int j = 0; j < C; j++) {
			hor[i][j] = H[i][j];
			ver[i][j] = V[i][j];
		}

	t.build();
}

void changeH(int P, int Q, int W) {
	hor[P][Q] = W;

	t.update(P / bl);
}

void changeV(int P, int Q, int W) {
	ver[P][Q] = W;
	t.update(P / bl);
}

int escape(int V1, int V2) {
	return t.get(V1, V2);
}

Compilation message

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12140 KB Output is correct
2 Correct 9 ms 12140 KB Output is correct
3 Correct 88 ms 13680 KB Output is correct
4 Correct 9 ms 12140 KB Output is correct
5 Correct 9 ms 12140 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 380 KB Output is correct
8 Correct 0 ms 364 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 81 ms 1516 KB Output is correct
12 Correct 1 ms 492 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 185 ms 1772 KB Output is correct
2 Correct 262 ms 1772 KB Output is correct
3 Correct 247 ms 1644 KB Output is correct
4 Correct 259 ms 1736 KB Output is correct
5 Correct 281 ms 1772 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct
9 Correct 1298 ms 1772 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 16108 KB Output is correct
2 Correct 12 ms 16108 KB Output is correct
3 Correct 13 ms 16108 KB Output is correct
4 Correct 53 ms 16876 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 201 ms 1644 KB Output is correct
2 Correct 269 ms 1772 KB Output is correct
3 Correct 249 ms 1736 KB Output is correct
4 Correct 252 ms 1864 KB Output is correct
5 Correct 272 ms 1644 KB Output is correct
6 Correct 14 ms 16108 KB Output is correct
7 Correct 13 ms 16108 KB Output is correct
8 Correct 13 ms 16108 KB Output is correct
9 Correct 55 ms 16852 KB Output is correct
10 Correct 9 ms 12140 KB Output is correct
11 Correct 9 ms 12140 KB Output is correct
12 Correct 88 ms 13676 KB Output is correct
13 Correct 9 ms 12140 KB Output is correct
14 Correct 10 ms 12140 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 492 KB Output is correct
19 Correct 1 ms 492 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 1 ms 492 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 424 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 80 ms 1516 KB Output is correct
26 Correct 1 ms 492 KB Output is correct
27 Correct 1300 ms 1776 KB Output is correct
28 Correct 2037 ms 38144 KB Output is correct
29 Correct 2040 ms 35568 KB Output is correct
30 Correct 2043 ms 35352 KB Output is correct
31 Correct 2156 ms 39368 KB Output is correct
32 Correct 1 ms 364 KB Output is correct

Subtask #6
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 1676 KB Output is correct
2 Correct 262 ms 1656 KB Output is correct
3 Correct 256 ms 1644 KB Output is correct
4 Correct 253 ms 1672 KB Output is correct
5 Correct 273 ms 1768 KB Output is correct
6 Correct 13 ms 16108 KB Output is correct
7 Correct 16 ms 16108 KB Output is correct
8 Correct 14 ms 16256 KB Output is correct
9 Correct 54 ms 16876 KB Output is correct
10 Correct 11 ms 12140 KB Output is correct
11 Correct 9 ms 12140 KB Output is correct
12 Correct 89 ms 13676 KB Output is correct
13 Correct 11 ms 12140 KB Output is correct
14 Correct 8 ms 12140 KB Output is correct
15 Correct 1546 ms 100232 KB Output is correct
16 Correct 8339 ms 101680 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 492 KB Output is correct
21 Correct 1 ms 492 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 1 ms 492 KB Output is correct
26 Correct 1 ms 492 KB Output is correct
27 Correct 79 ms 1516 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1291 ms 1772 KB Output is correct
30 Correct 2029 ms 38136 KB Output is correct
31 Correct 7944 ms 100844 KB Output is correct
32 Correct 7842 ms 100840 KB Output is correct
33 Correct 2059 ms 35436 KB Output is correct
34 Correct 7915 ms 98028 KB Output is correct
35 Correct 2019 ms 35564 KB Output is correct
36 Correct 7991 ms 98028 KB Output is correct
37 Correct 2111 ms 39284 KB Output is correct
38 Correct 7834 ms 101460 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 8162 ms 98156 KB Output is correct