oj.uz

Submission #505686

# Submission time Handle Problem Language Result Execution time Memory
505686 2022-01-11T06:55:03 Z pragmatist Bomb (IZhO17_bomb) C++17
28 / 100
 1000 ms 14644 KB 
#include <bits/stdc++.h>                            
 
#define pb push_back
#define sz(v) (int)v.size()
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define x first
#define y second
#define int long long
#define nl "\n"
 
using namespace std;

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

const int N = (int)1e6 + 7;
const int M = (int)5e6 + 7;
const ll MOD = (ll)1e9 + 7;                    
const int inf = (int)1e9 + 7;
const ll INF = (ll)3e18 + 7;

pii dir[] = {{-1, -1}, {1, 1}, {-1, 1}, {1, -1}};

int n, m;
char c[2501][2501];
bool used[2501][2501];

void solve() {           
	cin >> n >> m;
	for(int i = 1; i <= n; ++i) {
		for(int j = 1; j <= m; ++j) {
			cin >> c[i][j];
		}
	}
	int ans = inf;
	if(n == 1) {
		int cur = 0;
		for(int i = 1; i <= m; ++i) {
			if(c[1][i] == '1') cur++;
			else {
				if(cur > 0) ans = min(ans, cur);
				cur = 0;
			}
		}
		if(c[1][m] == '1') ans = min(ans, cur);
		cout << ans << nl;		
		return;
	}
	if(m == 1) {
		int cur = 0;
		for(int i = 1; i <= n; ++i) {
			if(c[i][1] == '1') cur++;
			else {
				if(cur > 0) ans = min(ans, cur);
				cur = 0;
			}
		}                                      		
		if(c[n][1] == '1') ans = min(ans, cur);
		cout << ans << nl;		
		return;
	}
	ans = 0;
	for(int e = 1; e <= n; ++e) {
		for(int f = 1; f <= n; ++f) {
			bool ok = 1;
			for(int i = 1; i <= n; ++i) fill(used[i] + 1, used[i] + 1 + m, 0);
			for(int i = 1; i <= n; ++i) {
				for(int j = 1; j <= n; ++j) {
			        if(i + e - 1 > n || j + f - 1 > m) break;
					if(c[i][j] == '1') {
						bool cur = 1;
						for(int ii = i; ii <= i + e - 1 && cur; ++ii) {
							for(int jj = j; jj <= j + f - 1 && cur; ++jj) {
								cur &= (c[ii][jj] == '1');
							}
						}
						if(cur) {
							for(int ii = i; ii <= i + e - 1 && cur; ++ii) {
								for(int jj = j; jj <= j + f - 1 && cur; ++jj) {
									used[ii][jj] = 1;
								}
							}	
						}					
					}
				}
			}
			for(int i = 1; i <= n && ok; ++i) {
				for(int j = 1; j <= n && ok; ++j) {
					if(c[i][j] == '1') ok &= (used[i][j] == 1);
				}
			}
			if(ok) {
				ans = max(ans, e * f);
				//cout << e << ' ' << f << nl;
			}
		}
	}
	cout << ans << nl;
}
                
signed main() {                   
	ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);
   	int test = 1;
	//cin >> test;
	for(int i = 1; i <= test; ++i) {
        //cout << "Case " << i << ": ";
        solve();
    }
    return 0;
}

Subtask #1
28.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 3 ms 6348 KB Output is correct
4 Correct 2 ms 6348 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 31 ms 636 KB Output is correct
18 Correct 12 ms 676 KB Output is correct
19 Correct 94 ms 780 KB Output is correct
20 Correct 101 ms 764 KB Output is correct
21 Correct 6 ms 588 KB Output is correct
22 Correct 34 ms 684 KB Output is correct
23 Correct 586 ms 812 KB Output is correct
24 Correct 87 ms 716 KB Output is correct
25 Correct 874 ms 716 KB Output is correct
26 Execution timed out 1089 ms 716 KB Time limit exceeded
27 Execution timed out 1072 ms 1736 KB Time limit exceeded
28 Execution timed out 1089 ms 1764 KB Time limit exceeded
29 Execution timed out 1064 ms 2300 KB Time limit exceeded
30 Execution timed out 1076 ms 2508 KB Time limit exceeded
31 Execution timed out 1080 ms 1996 KB Time limit exceeded
32 Execution timed out 1077 ms 2440 KB Time limit exceeded
33 Execution timed out 1078 ms 2636 KB Time limit exceeded
34 Execution timed out 1094 ms 2124 KB Time limit exceeded
35 Execution timed out 1086 ms 2636 KB Time limit exceeded
36 Execution timed out 1046 ms 2636 KB Time limit exceeded
37 Correct 1 ms 332 KB Output is correct
38 Execution timed out 1004 ms 14400 KB Time limit exceeded
39 Correct 2 ms 332 KB Output is correct
40 Execution timed out 1068 ms 5276 KB Time limit exceeded
41 Correct 1 ms 332 KB Output is correct
42 Execution timed out 1032 ms 708 KB Time limit exceeded
43 Execution timed out 1040 ms 14356 KB Time limit exceeded
44 Execution timed out 1095 ms 2624 KB Time limit exceeded
45 Execution timed out 1029 ms 14352 KB Time limit exceeded
46 Execution timed out 1071 ms 14352 KB Time limit exceeded
47 Execution timed out 1040 ms 14400 KB Time limit exceeded
48 Execution timed out 1014 ms 14404 KB Time limit exceeded
49 Execution timed out 1102 ms 14420 KB Time limit exceeded
50 Execution timed out 1029 ms 14356 KB Time limit exceeded
51 Execution timed out 1034 ms 14344 KB Time limit exceeded
52 Execution timed out 1080 ms 14408 KB Time limit exceeded
53 Execution timed out 1039 ms 14412 KB Time limit exceeded
54 Execution timed out 1053 ms 14420 KB Time limit exceeded
55 Execution timed out 1010 ms 14408 KB Time limit exceeded
56 Execution timed out 1095 ms 14320 KB Time limit exceeded
57 Execution timed out 1041 ms 14440 KB Time limit exceeded
58 Execution timed out 1033 ms 14400 KB Time limit exceeded
59 Execution timed out 1020 ms 14348 KB Time limit exceeded
60 Execution timed out 1069 ms 14412 KB Time limit exceeded
61 Execution timed out 1076 ms 14404 KB Time limit exceeded
62 Execution timed out 1040 ms 14476 KB Time limit exceeded
63 Execution timed out 1035 ms 14404 KB Time limit exceeded
64 Execution timed out 1026 ms 14324 KB Time limit exceeded
65 Execution timed out 1036 ms 14444 KB Time limit exceeded
66 Execution timed out 1014 ms 14484 KB Time limit exceeded
67 Execution timed out 1077 ms 14420 KB Time limit exceeded
68 Execution timed out 1057 ms 14404 KB Time limit exceeded
69 Execution timed out 1018 ms 14384 KB Time limit exceeded
70 Execution timed out 1064 ms 12232 KB Time limit exceeded
71 Execution timed out 1014 ms 14404 KB Time limit exceeded
72 Execution timed out 1008 ms 14308 KB Time limit exceeded
73 Execution timed out 1048 ms 14368 KB Time limit exceeded
74 Execution timed out 1077 ms 14320 KB Time limit exceeded
75 Execution timed out 1038 ms 14360 KB Time limit exceeded
76 Execution timed out 1036 ms 14372 KB Time limit exceeded
77 Execution timed out 1095 ms 14372 KB Time limit exceeded
78 Execution timed out 1083 ms 14408 KB Time limit exceeded
79 Execution timed out 1097 ms 14424 KB Time limit exceeded
80 Execution timed out 1075 ms 14372 KB Time limit exceeded
81 Execution timed out 1065 ms 14388 KB Time limit exceeded
82 Execution timed out 1010 ms 14404 KB Time limit exceeded
83 Execution timed out 1014 ms 14332 KB Time limit exceeded
84 Execution timed out 1006 ms 14436 KB Time limit exceeded
85 Execution timed out 1059 ms 14348 KB Time limit exceeded
86 Execution timed out 1074 ms 14416 KB Time limit exceeded
87 Execution timed out 1058 ms 14492 KB Time limit exceeded
88 Execution timed out 1053 ms 14352 KB Time limit exceeded
89 Execution timed out 1014 ms 14440 KB Time limit exceeded
90 Execution timed out 1096 ms 12224 KB Time limit exceeded
91 Execution timed out 1002 ms 14316 KB Time limit exceeded
92 Execution timed out 1041 ms 14440 KB Time limit exceeded
93 Execution timed out 1014 ms 14384 KB Time limit exceeded
94 Execution timed out 1020 ms 14404 KB Time limit exceeded
95 Execution timed out 1052 ms 14408 KB Time limit exceeded
96 Execution timed out 1054 ms 14516 KB Time limit exceeded
97 Execution timed out 1083 ms 14412 KB Time limit exceeded
98 Execution timed out 1016 ms 14420 KB Time limit exceeded
99 Execution timed out 1028 ms 14612 KB Time limit exceeded
100 Execution timed out 1082 ms 14644 KB Time limit exceeded