oj.uz

Submission #93223

# Submission time Handle Problem Language Result Execution time Memory
93223 2019-01-07T10:07:02 Z Vardanyan Bomb (IZhO17_bomb) C++14
46 / 100
 318 ms 104352 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <algorithm>
#include <bitset>
#include <cstring>
#include <vector>
using namespace std;
const int N = 2505;
int dzaxic[N][N];
int ajic[N][N];
int a[N][N];
int n, m;
int M[N];

int mnw = 1000 * 1000 * 1000 + 5;
int mnh = mnw;
vector<pair<int, int> > v;
int main(){
	ios_base::sync_with_stdio(false);
	cin >> n >> m;
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= m; j++){
			char c;
			cin >> c;
			a[i][j] = c - '0';
		}
	}
	for (int i = 1; i <= n; i++)
	{
		int now = 0;
		for (int j = 1; j <= m; j++){
			if (a[i][j]){
				now++;
				dzaxic[i][j] = now;
			}
			else{
				if (now)	mnw = min(mnw, now);
				now = 0;
			}
		}
		if (now)	mnw = min(mnw, now);
		now = 0;
		for (int j = m; j >= 1; j--){
			if (a[i][j]){
				now++;
				ajic[i][j] = now;
			}
			else{
				if (now)	mnw = min(mnw, now);
				now = 0;
			}
		}
		if (now)	mnw = min(mnw, now);
		now = 0;
	}
	for (int j = 1; j <= m; j++){
		int now = 0;
		for (int i = 1; i <= n; i++){
			if (a[i][j]){
				now++;
			}
			else{
				if (now)	mnh = min(mnh, now);
				now = 0;
			}
		}
		if (now)	mnh = min(mnh, now);
	}
	//cout << mnh << " " << mnw << endl;
	/*for (int i = 1; i <= n; i++){
	for (int j = 1; j <= m; j++){
	cout <<ajic[i][j] << " ";
	}
	cout << endl;
	}*/
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= m; j++){
			if (a[i][j] == 1 && a[i - 1][j] == 0 && a[i][j - 1] == 0 && a[i - 1][j - 1] == 0){
				int now = -1;
				//calc1(i, j, 1);
				for (int ii = i; ii <= n; ii++){
					if (a[ii][j] == 0) break;
					if (now == -1 || ajic[ii][j] < now){
						now = ajic[ii][j];
					}
					now = min(now, mnw);
					v.push_back({ ii - i + 1, now });
				}
			}
			if (a[i][j] == 1 && a[i][j - 1] == 0 && a[i + 1][j - 1] == 0 && a[i][j + 1] == 0){
				int now = -1;
				//calc1(i, j, -1);
				for (int ii = i; ii >= 1; ii--){
					if (a[ii][j] == 0) break;
					if (now == -1 || ajic[ii][j] < now){
						now = ajic[ii][j];
					}
					now = min(now, mnw);
					v.push_back({ i - ii + 1, now });
				}
			}
			if (a[i][j] == 1 && a[i - 1][j] == 0 && a[i][j + 1] == 0 && a[i - 1][j + 1] == 0){
				int now = -1;
				for (int ii = i; ii <= n; ii++){
					if (a[ii][j] == 0) break;
					if (now == -1 || dzaxic[ii][j] < now){
						now = dzaxic[ii][j];
					}
					now = min(now, mnw);
					v.push_back({ ii - i + 1, now });
				}
			}
			if (a[i][j] == 1 && a[i + 1][j] == 0 && a[i][j + 1] == 0 && a[i + 1][j + 1] == 0){
				int now = -1;
				for (int ii = i; ii >= 1; ii--){
					if (a[ii][j] == 0) break;
					if (now == -1 || dzaxic[ii][j] < now){
						now = dzaxic[ii][j];
					}
					now = min(now, mnw);
					v.push_back({ i - ii + 1, now });
				}
			}
		}
	}
	//	cout << mnh << " " << mnw << endl;
	memset(M, -1, sizeof M);
	for (int i = 0; i < v.size(); i++){
		int a = v[i].first;
		int b = v[i].second;
		b = min(b, mnw);
		if (M[a] == -1 || M[a] > b){
			M[a] = b;
		}
	}
	int ans = 0;
	for (int i = 0; i < v.size(); i++){
		int a = v[i].first;
		int b = M[a];
		a = min(a, mnh);
		//if (a > mnh) continue;
		a *= b;
		ans = max(ans, a);
	}
	cout << ans << endl;
	return 0;
}

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:128:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < v.size(); i++){
                  ~~^~~~~~~~~~
bomb.cpp:137:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < v.size(); i++){
                  ~~^~~~~~~~~~

Subtask #1
46.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 388 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 61 ms 47060 KB Output is correct
4 Correct 41 ms 38840 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Incorrect 2 ms 504 KB Output isn't correct
9 Incorrect 2 ms 632 KB Output isn't correct
10 Correct 1 ms 504 KB Output is correct
11 Incorrect 2 ms 548 KB Output isn't correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Incorrect 2 ms 504 KB Output isn't correct
16 Correct 2 ms 632 KB Output is correct
17 Correct 2 ms 1144 KB Output is correct
18 Correct 2 ms 1016 KB Output is correct
19 Incorrect 2 ms 1272 KB Output isn't correct
20 Incorrect 2 ms 1272 KB Output isn't correct
21 Correct 2 ms 760 KB Output is correct
22 Incorrect 2 ms 1020 KB Output isn't correct
23 Incorrect 2 ms 1272 KB Output isn't correct
24 Incorrect 2 ms 1144 KB Output isn't correct
25 Incorrect 2 ms 1504 KB Output isn't correct
26 Correct 10 ms 1656 KB Output is correct
27 Correct 6 ms 4856 KB Output is correct
28 Correct 5 ms 2424 KB Output is correct
29 Correct 9 ms 7032 KB Output is correct
30 Incorrect 9 ms 5752 KB Output isn't correct
31 Incorrect 7 ms 4344 KB Output isn't correct
32 Incorrect 8 ms 5496 KB Output isn't correct
33 Incorrect 9 ms 7032 KB Output isn't correct
34 Incorrect 5 ms 2680 KB Output isn't correct
35 Incorrect 8 ms 3704 KB Output isn't correct
36 Correct 11 ms 8312 KB Output is correct
37 Incorrect 2 ms 632 KB Output isn't correct
38 Correct 200 ms 75388 KB Output is correct
39 Correct 2 ms 632 KB Output is correct
40 Incorrect 31 ms 20728 KB Output isn't correct
41 Correct 2 ms 632 KB Output is correct
42 Correct 3 ms 1656 KB Output is correct
43 Correct 318 ms 104352 KB Output is correct
44 Correct 11 ms 8312 KB Output is correct
45 Correct 250 ms 89400 KB Output is correct
46 Correct 207 ms 75484 KB Output is correct
47 Correct 281 ms 89508 KB Output is correct
48 Correct 246 ms 79592 KB Output is correct
49 Correct 217 ms 75528 KB Output is correct
50 Correct 241 ms 79592 KB Output is correct
51 Correct 245 ms 79592 KB Output is correct
52 Correct 247 ms 79540 KB Output is correct
53 Correct 244 ms 79096 KB Output is correct
54 Incorrect 225 ms 64236 KB Output isn't correct
55 Incorrect 213 ms 62572 KB Output isn't correct
56 Correct 221 ms 79636 KB Output is correct
57 Incorrect 194 ms 56632 KB Output isn't correct
58 Correct 208 ms 62636 KB Output is correct
59 Correct 225 ms 58612 KB Output is correct
60 Correct 197 ms 67448 KB Output is correct
61 Correct 200 ms 75640 KB Output is correct
62 Correct 206 ms 76152 KB Output is correct
63 Correct 205 ms 76480 KB Output is correct
64 Correct 192 ms 59384 KB Output is correct
65 Correct 241 ms 79544 KB Output is correct
66 Incorrect 203 ms 71772 KB Output isn't correct
67 Correct 216 ms 80064 KB Output is correct
68 Correct 228 ms 80148 KB Output is correct
69 Incorrect 215 ms 56016 KB Output isn't correct
70 Incorrect 137 ms 31480 KB Output isn't correct
71 Incorrect 214 ms 47652 KB Output isn't correct
72 Incorrect 200 ms 52132 KB Output isn't correct
73 Incorrect 219 ms 52592 KB Output isn't correct
74 Incorrect 216 ms 55544 KB Output isn't correct
75 Incorrect 216 ms 57664 KB Output isn't correct
76 Incorrect 220 ms 58728 KB Output isn't correct
77 Incorrect 218 ms 59384 KB Output isn't correct
78 Incorrect 214 ms 59700 KB Output isn't correct
79 Incorrect 181 ms 32068 KB Output isn't correct
80 Incorrect 220 ms 33528 KB Output isn't correct
81 Incorrect 200 ms 33956 KB Output isn't correct
82 Incorrect 201 ms 62200 KB Output isn't correct
83 Incorrect 194 ms 61944 KB Output isn't correct
84 Incorrect 199 ms 27056 KB Output isn't correct
85 Incorrect 202 ms 60920 KB Output isn't correct
86 Incorrect 220 ms 74412 KB Output isn't correct
87 Incorrect 217 ms 59768 KB Output isn't correct
88 Incorrect 212 ms 60804 KB Output isn't correct
89 Incorrect 230 ms 69344 KB Output isn't correct
90 Incorrect 152 ms 45376 KB Output isn't correct
91 Incorrect 225 ms 64632 KB Output isn't correct
92 Incorrect 220 ms 66296 KB Output isn't correct
93 Incorrect 221 ms 73540 KB Output isn't correct
94 Incorrect 226 ms 67772 KB Output isn't correct
95 Incorrect 196 ms 61716 KB Output isn't correct
96 Incorrect 201 ms 61432 KB Output isn't correct
97 Incorrect 202 ms 73848 KB Output isn't correct
98 Incorrect 197 ms 61176 KB Output isn't correct
99 Incorrect 197 ms 67292 KB Output isn't correct
100 Incorrect 216 ms 72652 KB Output isn't correct