oj.uz

Submission #1064143

# Submission time Handle Problem Language Result Execution time Memory
1064143 2024-08-18T09:37:35 Z AmirAli_H1 Soccer Stadium (IOI23_soccer) C++17
65.5 / 100
 412 ms 108960 KB 
// In the name of Allah

#include <bits/stdc++.h>
#include "soccer.h"
using namespace std;

typedef			long long				ll;
typedef			pair<int, int>			pii;
typedef			pair<ll, ll>			pll;

#define			F						first
#define			S						second
#define			endl					'\n'
#define			sep						' '
#define			pb						push_back
#define			Mp						make_pair
#define			all(x)					(x).begin(),(x).end()
#define			len(x)					((ll) (x).size())

const int maxn = 2000 + 4;

int n;
int A[maxn][maxn];
vector<pii> ls;
int val1[maxn][maxn], val2[maxn][maxn];
pii val[maxn]; int dp[maxn][maxn];

bool cmp(pii i, pii j) {
	return ((i.S - i.F) > (j.S - j.F));
}

bool is_ok() {
	ls.clear();
	for (int i = 0; i < n; i++) {
		int x = 0;
		for (int j = 0; j < n; j++) {
			if (A[i][j] != A[i][x]) {
				if (A[i][x] == 0) ls.pb(Mp(x, j - 1));
				x = j;
			}
		}
		if (A[i][x] == 0) ls.pb(Mp(x, n - 1));
	}
	sort(all(ls), cmp);
	
	for (int i = 1; i < len(ls); i++) {
		if (ls[i].F < ls[i - 1].F || ls[i].S > ls[i - 1].S) return 0;
	}
	return 1;
}

int check() {
	int num = 0; 
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) num += (A[i][j] == 0);
	}
	
	bool ok = 1;
	ok &= is_ok();
	for (int i = 0; i < n; i++) {
		for (int j = i; j < n; j++) swap(A[i][j], A[j][i]);
	}
	ok &= is_ok();
	for (int i = 0; i < n; i++) {
		for (int j = i; j < n; j++) swap(A[i][j], A[j][i]);
	}
	if (ok) return num;
	else return 0;
}

int get_val(int x, int y) {
	val[x] = Mp(val1[x][y], val2[x][y]);
	int lx = x, rx = x;
	for (int r = x + 1; r < n; r++) {
		if (A[r][y] == 1) break;
		val[r] = Mp(val1[r][y], val2[r][y]);
		val[r].F = max(val[r].F, val[r - 1].F);
		val[r].S = min(val[r].S, val[r - 1].S);
		rx = r;
	}
	for (int r = x - 1; r >= 0; r--) {
		if (A[r][y] == 1) break;
		val[r] = Mp(val1[r][y], val2[r][y]);
		val[r].F = max(val[r].F, val[r + 1].F);
		val[r].S = min(val[r].S, val[r + 1].S);
		lx = r;
	}
	
	for (int i = x; i >= lx; i--) {
		for (int j = x; j <= rx; j++) {
			int valx = min(val[i].S, val[j].S) - max(val[i].F, val[j].F) + 1;
			if (i == x && j == x) {
				dp[i][j] = valx;
			}
			else {
				dp[i][j] = 0;
				if (i + 1 <= x) {
					dp[i][j] = max(dp[i][j], dp[i + 1][j] + valx);
				}
				if (j - 1 >= x) {
					dp[i][j] = max(dp[i][j], dp[i][j - 1] + valx);
				}
			}
		}
	}
	
	return dp[lx][rx];
}

int solve() {
	int mx = 0;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			if (A[i][j] == 1) continue;
			mx = max(mx, get_val(i, j));
		}
	}
	return mx;
}

int biggest_stadium(int N, vector<vector<int>> F) {
	n = N;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			A[i][j] = F[i][j];
			if (A[i][j] == 1) ls.pb(Mp(i, j));
		}
	}
	
	if (len(ls) == 0) return (n * n);
	else if (len(ls) == 1) {
		int i = ls.back().F, j = ls.back().S;
		return (n * n) - (min(i + 1, n - i) * min(j + 1, n - j));
	}
	
	for (int i = 0; i < n; i++) {
		int x = 0;
		for (int j = 0; j < n; j++) {
			if (A[i][j] != A[i][x]) x = j;
			val1[i][j] = x;
		}
		x = n - 1;
		for (int j = n - 1; j >= 0; j--) {
			if (A[i][j] != A[i][x]) x = j;
			val2[i][j] = x;
		}
	}
	
	if (n <= 30) return solve();
	else return check();
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB ok

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 2 ms 2652 KB ok
8 Correct 24 ms 5276 KB ok
9 Correct 197 ms 49196 KB ok

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB ok
2 Correct 0 ms 348 KB ok
3 Correct 1 ms 2392 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 2396 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB ok
2 Correct 0 ms 600 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 1 ms 2392 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 2396 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 348 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 1 ms 2396 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 0 ms 348 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 344 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 1 ms 348 KB ok
24 Correct 0 ms 344 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB ok
2 Correct 0 ms 600 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 1 ms 2392 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 2396 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 1 ms 2396 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 0 ms 348 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 348 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 344 KB ok
24 Correct 0 ms 348 KB ok
25 Correct 1 ms 348 KB ok
26 Correct 0 ms 344 KB ok
27 Correct 0 ms 348 KB ok
28 Correct 0 ms 348 KB ok
29 Correct 1 ms 348 KB ok
30 Correct 1 ms 860 KB ok
31 Correct 1 ms 860 KB ok
32 Correct 1 ms 860 KB ok
33 Correct 1 ms 860 KB ok
34 Correct 1 ms 860 KB ok
35 Correct 1 ms 856 KB ok
36 Correct 1 ms 860 KB ok
37 Correct 1 ms 860 KB ok
38 Correct 0 ms 860 KB ok
39 Correct 1 ms 2652 KB ok
40 Correct 1 ms 860 KB ok
41 Correct 1 ms 860 KB ok

Subtask #5
4.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB ok
2 Correct 0 ms 600 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 1 ms 2392 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 0 ms 348 KB ok
9 Correct 0 ms 348 KB ok
10 Correct 0 ms 2396 KB ok
11 Correct 0 ms 348 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 348 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 1 ms 2396 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 0 ms 348 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 348 KB ok
22 Correct 0 ms 348 KB ok
23 Correct 0 ms 344 KB ok
24 Correct 0 ms 348 KB ok
25 Correct 1 ms 348 KB ok
26 Correct 0 ms 344 KB ok
27 Correct 0 ms 348 KB ok
28 Correct 0 ms 348 KB ok
29 Correct 1 ms 348 KB ok
30 Correct 1 ms 860 KB ok
31 Correct 1 ms 860 KB ok
32 Correct 1 ms 860 KB ok
33 Correct 1 ms 860 KB ok
34 Correct 1 ms 860 KB ok
35 Correct 1 ms 856 KB ok
36 Correct 1 ms 860 KB ok
37 Correct 1 ms 860 KB ok
38 Correct 0 ms 860 KB ok
39 Correct 1 ms 2652 KB ok
40 Correct 1 ms 860 KB ok
41 Correct 1 ms 860 KB ok
42 Partially correct 22 ms 11736 KB partial
43 Partially correct 43 ms 11720 KB partial
44 Partially correct 18 ms 11436 KB partial
45 Partially correct 17 ms 11352 KB partial
46 Partially correct 19 ms 11540 KB partial
47 Partially correct 17 ms 11356 KB partial
48 Correct 20 ms 12492 KB ok
49 Partially correct 19 ms 14284 KB partial
50 Partially correct 25 ms 13780 KB partial
51 Partially correct 22 ms 13600 KB partial
52 Partially correct 22 ms 15048 KB partial
53 Partially correct 23 ms 15304 KB partial
54 Partially correct 19 ms 15124 KB partial
55 Partially correct 21 ms 14880 KB partial
56 Partially correct 23 ms 14540 KB partial
57 Partially correct 18 ms 13316 KB partial
58 Partially correct 21 ms 13148 KB partial
59 Partially correct 20 ms 13148 KB partial

Subtask #6
7.5 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB ok
2 Correct 0 ms 600 KB ok
3 Correct 0 ms 348 KB ok
4 Correct 0 ms 348 KB ok
5 Correct 0 ms 348 KB ok
6 Correct 0 ms 348 KB ok
7 Correct 0 ms 348 KB ok
8 Correct 2 ms 2652 KB ok
9 Correct 24 ms 5276 KB ok
10 Correct 197 ms 49196 KB ok
11 Correct 1 ms 2392 KB ok
12 Correct 0 ms 348 KB ok
13 Correct 0 ms 348 KB ok
14 Correct 0 ms 348 KB ok
15 Correct 0 ms 2396 KB ok
16 Correct 0 ms 348 KB ok
17 Correct 0 ms 348 KB ok
18 Correct 0 ms 348 KB ok
19 Correct 0 ms 348 KB ok
20 Correct 0 ms 348 KB ok
21 Correct 0 ms 348 KB ok
22 Correct 1 ms 2396 KB ok
23 Correct 0 ms 348 KB ok
24 Correct 0 ms 348 KB ok
25 Correct 0 ms 348 KB ok
26 Correct 0 ms 348 KB ok
27 Correct 0 ms 348 KB ok
28 Correct 0 ms 344 KB ok
29 Correct 0 ms 348 KB ok
30 Correct 1 ms 348 KB ok
31 Correct 0 ms 344 KB ok
32 Correct 0 ms 348 KB ok
33 Correct 0 ms 348 KB ok
34 Correct 1 ms 348 KB ok
35 Correct 1 ms 860 KB ok
36 Correct 1 ms 860 KB ok
37 Correct 1 ms 860 KB ok
38 Correct 1 ms 860 KB ok
39 Correct 1 ms 860 KB ok
40 Correct 1 ms 856 KB ok
41 Correct 1 ms 860 KB ok
42 Correct 1 ms 860 KB ok
43 Correct 0 ms 860 KB ok
44 Correct 1 ms 2652 KB ok
45 Correct 1 ms 860 KB ok
46 Correct 1 ms 860 KB ok
47 Partially correct 22 ms 11736 KB partial
48 Partially correct 43 ms 11720 KB partial
49 Partially correct 18 ms 11436 KB partial
50 Partially correct 17 ms 11352 KB partial
51 Partially correct 19 ms 11540 KB partial
52 Partially correct 17 ms 11356 KB partial
53 Correct 20 ms 12492 KB ok
54 Partially correct 19 ms 14284 KB partial
55 Partially correct 25 ms 13780 KB partial
56 Partially correct 22 ms 13600 KB partial
57 Partially correct 22 ms 15048 KB partial
58 Partially correct 23 ms 15304 KB partial
59 Partially correct 19 ms 15124 KB partial
60 Partially correct 21 ms 14880 KB partial
61 Partially correct 23 ms 14540 KB partial
62 Partially correct 18 ms 13316 KB partial
63 Partially correct 21 ms 13148 KB partial
64 Partially correct 20 ms 13148 KB partial
65 Partially correct 310 ms 82080 KB partial
66 Partially correct 412 ms 100932 KB partial
67 Partially correct 331 ms 107120 KB partial
68 Partially correct 271 ms 79060 KB partial
69 Partially correct 251 ms 79308 KB partial
70 Partially correct 257 ms 79792 KB partial
71 Partially correct 254 ms 78892 KB partial
72 Partially correct 286 ms 78888 KB partial
73 Correct 325 ms 94580 KB ok
74 Correct 288 ms 94316 KB ok
75 Partially correct 286 ms 94312 KB partial
76 Partially correct 369 ms 86908 KB partial
77 Partially correct 374 ms 86904 KB partial
78 Partially correct 287 ms 81552 KB partial
79 Partially correct 321 ms 108616 KB partial
80 Partially correct 310 ms 108664 KB partial
81 Partially correct 331 ms 106836 KB partial
82 Partially correct 314 ms 102468 KB partial
83 Partially correct 342 ms 104024 KB partial
84 Partially correct 331 ms 107592 KB partial
85 Partially correct 325 ms 108612 KB partial
86 Partially correct 290 ms 106100 KB partial
87 Partially correct 301 ms 105556 KB partial
88 Partially correct 294 ms 97624 KB partial
89 Partially correct 291 ms 81816 KB partial
90 Partially correct 299 ms 89212 KB partial
91 Partially correct 279 ms 84124 KB partial
92 Partially correct 346 ms 106584 KB partial
93 Partially correct 348 ms 106840 KB partial
94 Partially correct 330 ms 107848 KB partial
95 Partially correct 318 ms 107632 KB partial
96 Partially correct 314 ms 107592 KB partial
97 Partially correct 314 ms 107656 KB partial
98 Partially correct 292 ms 108960 KB partial
99 Partially correct 318 ms 81056 KB partial
100 Partially correct 248 ms 78932 KB partial
101 Partially correct 254 ms 78928 KB partial
102 Partially correct 295 ms 78928 KB partial
103 Partially correct 258 ms 79056 KB partial
104 Partially correct 240 ms 78892 KB partial
105 Partially correct 244 ms 78928 KB partial
106 Partially correct 261 ms 78932 KB partial
107 Partially correct 278 ms 78904 KB partial
108 Partially correct 290 ms 83368 KB partial
109 Partially correct 279 ms 83084 KB partial