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Submission #486288

# Submission time Handle Problem Language Result Execution time Memory
486288 2021-11-11T07:19:25 Z ntabc05101 Wombats (IOI13_wombats) C++17
100 / 100
 4401 ms 105112 KB 
#include "wombats.h"
#include<bits/stdc++.h>
using namespace std;

const int inf = 1e9 + 9;
const int mxR = 5000;
const int mxC = 200;
const int bs = 20;
const int mxN = mxR / 20;

int h[mxR][mxC], v[mxR][mxC];
int H[mxN << 2], L[mxN << 2];
int opt[mxC + 1];
int nds[mxN << 2][mxC][mxC];

void build(int x, int lo, int hi) {
	L[x] = lo; H[x] = hi;
	if (lo == hi) {
		return ;
	}
	int mid = (lo + hi) >> 1;
	build(x << 1, lo, mid);
	build(x << 1 | 1, mid + 1, hi);
}

void upd(int x, int l, int r) {
	if (L[x] == H[x]) {
		for (int i = 0; i < mxC; i++) {
			for (int j = 0; j < mxC; j++) {
				nds[x][i][j] = inf;
			}
		}
		for (int j = 0; j < mxC; j++) {
			nds[x][j][j] = 0;
			for (int i = L[x] * bs; i < (L[x] + 1) * bs; i++) {
				for (int k = 1; k < mxC; k++) {
					nds[x][j][k] = min(nds[x][j][k], nds[x][j][k - 1] + h[i][k - 1]);
				}
				for (int k = mxC - 1; k; k--) {
					nds[x][j][k - 1] = min(nds[x][j][k - 1], nds[x][j][k] + h[i][k - 1]);
				}
				for (int k = 0; k < mxC; k++) {
					nds[x][j][k] += v[i][k];
				}
			}
		}
		return ;
	}

	if (l <= H[x << 1]) {
		upd(x << 1, l, r);
	}
	if (H[x << 1] < r) {
		upd(x << 1 | 1, l, r);
	}

	memset(opt, 0, mxC * 4);
	for (int i = 0; i < mxC; i++) {
		for (int j = mxC - 1; ~j; j--) {
			array<int, 2> mn = {inf, 0};
			for (int k = opt[j]; k <= opt[j + 1]; k++) {
				mn = min(mn, {nds[x << 1][i][k] + nds[x << 1 | 1][k][j], -k});
			}
			nds[x][i][j] = mn[0];
			opt[j] = -mn[1];
		}
	}
}

void init(int r, int c, int H[mxR][mxC], int V[mxR][mxC]) {
	for (int i = 0; i < mxR; i++) {
		for (int j = 0; j < mxC; j++) {
			h[i][j] = inf;
		}
	}
	for (int i = 0; i < r; i++) {
		for (int j = 0; j < c - 1; j++) {
			h[i][j] = H[i][j];
		}
	}
	for (int i = 0; i < r - 1; i++) {
		for (int j = 0; j < c; j++) {
			v[i][j] = V[i][j];
		}
	}

	opt[mxC] = mxC - 1;
	build(1, 0, mxN - 1);
	upd(1, 0, mxN - 1);
}

void changeH(int x, int y, int w) {
	h[x][y] = w;
	upd(1, x / bs, x / bs);
}

void changeV(int x, int y, int w) {
	v[x][y] = w;
	upd(1, x / bs, x / bs);
}

int escape(int x, int y) {
	return nds[1][x][y];
}

/*
int main() {
	cin.tie(0)->sync_with_stdio(0);

	int r, c; cin >> r >> c;
	int h[r][200], v[r][200];
	for (int i = 0; i < r; i++) {
		for (int j = 0; j < c - 1; j++) {
			cin >> h[i][j];
		}
	}
	for (int i = 0; i < r - 1; i++) {
		for (int j = 0; j < c; j++) {
			cin >> v[i][j];
		}
	}

	init(r, c, h, v);
	int q; cin >> q;
	while (q--) {
		int type, x, y, w; cin >> type;
		if (type == 3) {
			cin >> x >> y;
			cout << escape(x, y) << "\n";
		}
		else {
			cin >> x >> y >> w;
			//continue;
			if (type == 1) {
				changeH(x, y, w);
			}
			else {
				changeV(x, y, w);
			}
		}
	}

	return 0;
}
*/

/*
3 4
0 2 5
7 1 1
0 4 0
0 0 0 2
0 3 4 7
5
3 2 1
3 3 3
2 0 0 5
1 1 1 6
3 2 1
 */

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 4056 ms 90204 KB Output is correct
2 Correct 4051 ms 90284 KB Output is correct
3 Correct 4030 ms 92960 KB Output is correct
4 Correct 3983 ms 90324 KB Output is correct
5 Correct 3963 ms 90336 KB Output is correct
6 Correct 1133 ms 82308 KB Output is correct
7 Correct 1132 ms 82432 KB Output is correct
8 Correct 1137 ms 82368 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1163 ms 82372 KB Output is correct
2 Correct 1139 ms 82328 KB Output is correct
3 Correct 1137 ms 82428 KB Output is correct
4 Correct 1142 ms 82600 KB Output is correct
5 Correct 1143 ms 82460 KB Output is correct
6 Correct 1128 ms 82432 KB Output is correct
7 Correct 1138 ms 82328 KB Output is correct
8 Correct 1135 ms 82640 KB Output is correct
9 Correct 1128 ms 82656 KB Output is correct
10 Correct 1135 ms 82352 KB Output is correct
11 Correct 1196 ms 84684 KB Output is correct
12 Correct 1142 ms 82540 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1703 ms 82724 KB Output is correct
2 Correct 1691 ms 82768 KB Output is correct
3 Correct 1707 ms 82792 KB Output is correct
4 Correct 1701 ms 82640 KB Output is correct
5 Correct 1682 ms 82864 KB Output is correct
6 Correct 1137 ms 82528 KB Output is correct
7 Correct 1133 ms 82504 KB Output is correct
8 Correct 1141 ms 82384 KB Output is correct
9 Correct 3908 ms 82736 KB Output is correct
10 Correct 1147 ms 82376 KB Output is correct

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 3959 ms 94256 KB Output is correct
2 Correct 4013 ms 94280 KB Output is correct
3 Correct 4010 ms 94172 KB Output is correct
4 Correct 4059 ms 95588 KB Output is correct

Subtask #5
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1730 ms 82884 KB Output is correct
2 Correct 1731 ms 82796 KB Output is correct
3 Correct 1697 ms 82928 KB Output is correct
4 Correct 1701 ms 82788 KB Output is correct
5 Correct 1690 ms 82692 KB Output is correct
6 Correct 4018 ms 94324 KB Output is correct
7 Correct 3994 ms 94316 KB Output is correct
8 Correct 4074 ms 94216 KB Output is correct
9 Correct 4011 ms 95696 KB Output is correct
10 Correct 3961 ms 90196 KB Output is correct
11 Correct 4035 ms 90364 KB Output is correct
12 Correct 4057 ms 93028 KB Output is correct
13 Correct 3987 ms 90312 KB Output is correct
14 Correct 3977 ms 90456 KB Output is correct
15 Correct 1163 ms 82440 KB Output is correct
16 Correct 1154 ms 82312 KB Output is correct
17 Correct 1155 ms 82432 KB Output is correct
18 Correct 1145 ms 82344 KB Output is correct
19 Correct 1135 ms 82456 KB Output is correct
20 Correct 1137 ms 82500 KB Output is correct
21 Correct 1140 ms 82420 KB Output is correct
22 Correct 1131 ms 82328 KB Output is correct
23 Correct 1135 ms 82412 KB Output is correct
24 Correct 1144 ms 82392 KB Output is correct
25 Correct 1198 ms 84828 KB Output is correct
26 Correct 1139 ms 82504 KB Output is correct
27 Correct 3946 ms 82716 KB Output is correct
28 Correct 4072 ms 98312 KB Output is correct
29 Correct 4083 ms 95960 KB Output is correct
30 Correct 4127 ms 96136 KB Output is correct
31 Correct 4115 ms 99884 KB Output is correct
32 Correct 1151 ms 82304 KB Output is correct

Subtask #6
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1715 ms 82760 KB Output is correct
2 Correct 1716 ms 82756 KB Output is correct
3 Correct 1777 ms 82696 KB Output is correct
4 Correct 1711 ms 82664 KB Output is correct
5 Correct 1700 ms 82688 KB Output is correct
6 Correct 3987 ms 94236 KB Output is correct
7 Correct 4003 ms 94228 KB Output is correct
8 Correct 3991 ms 94168 KB Output is correct
9 Correct 4026 ms 95432 KB Output is correct
10 Correct 3991 ms 90308 KB Output is correct
11 Correct 3956 ms 90220 KB Output is correct
12 Correct 4045 ms 93040 KB Output is correct
13 Correct 4022 ms 90220 KB Output is correct
14 Correct 3965 ms 90304 KB Output is correct
15 Correct 1301 ms 103796 KB Output is correct
16 Correct 4306 ms 105112 KB Output is correct
17 Correct 1130 ms 82368 KB Output is correct
18 Correct 1146 ms 82268 KB Output is correct
19 Correct 1161 ms 82448 KB Output is correct
20 Correct 1151 ms 82388 KB Output is correct
21 Correct 1164 ms 82320 KB Output is correct
22 Correct 1146 ms 82508 KB Output is correct
23 Correct 1138 ms 82504 KB Output is correct
24 Correct 1136 ms 82484 KB Output is correct
25 Correct 1146 ms 82452 KB Output is correct
26 Correct 1145 ms 82388 KB Output is correct
27 Correct 1215 ms 84896 KB Output is correct
28 Correct 1154 ms 82496 KB Output is correct
29 Correct 3926 ms 82736 KB Output is correct
30 Correct 4030 ms 98772 KB Output is correct
31 Correct 3995 ms 102512 KB Output is correct
32 Correct 4082 ms 102856 KB Output is correct
33 Correct 4042 ms 96012 KB Output is correct
34 Correct 4174 ms 100012 KB Output is correct
35 Correct 4057 ms 95988 KB Output is correct
36 Correct 4211 ms 100112 KB Output is correct
37 Correct 4129 ms 100080 KB Output is correct
38 Correct 4045 ms 103072 KB Output is correct
39 Correct 1159 ms 82492 KB Output is correct
40 Correct 4401 ms 100236 KB Output is correct