답안 #334582

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
334582 2020-12-09T13:08:16 Z amunduzbaev Bomb (IZhO17_bomb) C++14
100 / 100
178 ms 75884 KB
#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
#define ub upper_bound
#define lb lower_bound
#define ll long long  
#define ld long double 
#define pii pair<int, int>
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(),x.rend()
#define prc(n) fixed << setprecision(n)
#define fastios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define pi acos(-1);
const int inf = 1e9+7;
const int N = 2505;
int a[N][N], mnc, mnr, d[N][N], u[N][N], ans[N];

void solve(){
	mnr = inf, mnc = inf;
	int n, m;
	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++){
		for(int j=1;j<=m;j++){
			if(a[i][j])u[i][j] = u[i-1][j] + 1;
		}
	}

	for(int i=n;i>0;i--){
		for(int j=1;j<=m;j++){
			if(a[i][j]){
				d[i][j] = d[i+1][j]+1;
				if(a[i+1][j] == 0) mnc = min(mnc, u[i][j]);
			}
		}
	}
	
	
	for(int i=1;i<=m;i++) ans[i] = mnc;
	
	for(int i=1;i<=n;i++){
		int aa = inf, b = inf, c = 0;
		for(int j=1;j<=m;j++){
			if(a[i][j] == 0){
				if(c!=0) mnc = min(c, mnc);
				aa = b = inf, c = 0;
			}else{
				aa = min(aa, d[i][j]);
				b = min(b, u[i][j]);
				c++;
				ans[c] = min(ans[c], b + aa -1);
			}
		}
		
		aa = inf, b = inf, c = 0;
		for(int j = m; j>0; j--){
			if(a[i][j] == 0){
				if(c!=0) mnr = min(mnr, c);
				aa = b = inf, c = 0;
			}else{
				aa = min(d[i][j], aa);
				b = min(u[i][j], b);
				c++;
				ans[c] = min(ans[c], b + aa -1);
			}
		}
		if(c > 0) mnr = min(mnr, c);
	}
	int mx = 0;
	for(int i=1;i<=mnr;i++){
		mx = max(ans[i] * i, mx);
	}
	cout<<mx<<"\n";
	return;
}

 
int main(){
	fastios
	int t = 1;
	//cin>>t;
	while(t--) solve();
	return 0;
}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 620 KB Output is correct
3 Correct 15 ms 30444 KB Output is correct
4 Correct 17 ms 30572 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 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 1 ms 620 KB Output is correct
12 Correct 1 ms 492 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Correct 1 ms 492 KB Output is correct
16 Correct 1 ms 620 KB Output is correct
17 Correct 1 ms 1132 KB Output is correct
18 Correct 1 ms 1004 KB Output is correct
19 Correct 1 ms 1260 KB Output is correct
20 Correct 1 ms 1260 KB Output is correct
21 Correct 1 ms 748 KB Output is correct
22 Correct 1 ms 1004 KB Output is correct
23 Correct 1 ms 1260 KB Output is correct
24 Correct 1 ms 1132 KB Output is correct
25 Correct 1 ms 1516 KB Output is correct
26 Correct 1 ms 1644 KB Output is correct
27 Correct 5 ms 4844 KB Output is correct
28 Correct 4 ms 2412 KB Output is correct
29 Correct 7 ms 6380 KB Output is correct
30 Correct 7 ms 5740 KB Output is correct
31 Correct 6 ms 4204 KB Output is correct
32 Correct 7 ms 5356 KB Output is correct
33 Correct 9 ms 6764 KB Output is correct
34 Correct 4 ms 2668 KB Output is correct
35 Correct 6 ms 3564 KB Output is correct
36 Correct 10 ms 8300 KB Output is correct
37 Correct 1 ms 620 KB Output is correct
38 Correct 177 ms 75756 KB Output is correct
39 Correct 1 ms 620 KB Output is correct
40 Correct 29 ms 20076 KB Output is correct
41 Correct 1 ms 620 KB Output is correct
42 Correct 2 ms 1644 KB Output is correct
43 Correct 172 ms 70764 KB Output is correct
44 Correct 10 ms 7676 KB Output is correct
45 Correct 170 ms 71660 KB Output is correct
46 Correct 176 ms 75884 KB Output is correct
47 Correct 174 ms 71788 KB Output is correct
48 Correct 175 ms 75628 KB Output is correct
49 Correct 175 ms 75756 KB Output is correct
50 Correct 174 ms 75756 KB Output is correct
51 Correct 169 ms 74220 KB Output is correct
52 Correct 167 ms 74732 KB Output is correct
53 Correct 167 ms 73580 KB Output is correct
54 Correct 162 ms 61036 KB Output is correct
55 Correct 157 ms 59116 KB Output is correct
56 Correct 178 ms 75756 KB Output is correct
57 Correct 156 ms 54252 KB Output is correct
58 Correct 157 ms 59196 KB Output is correct
59 Correct 156 ms 56172 KB Output is correct
60 Correct 165 ms 66156 KB Output is correct
61 Correct 176 ms 75756 KB Output is correct
62 Correct 173 ms 75756 KB Output is correct
63 Correct 172 ms 75756 KB Output is correct
64 Correct 156 ms 57068 KB Output is correct
65 Correct 166 ms 73088 KB Output is correct
66 Correct 166 ms 70124 KB Output is correct
67 Correct 170 ms 75884 KB Output is correct
68 Correct 170 ms 75756 KB Output is correct
69 Correct 153 ms 53740 KB Output is correct
70 Correct 96 ms 30188 KB Output is correct
71 Correct 151 ms 46828 KB Output is correct
72 Correct 153 ms 52332 KB Output is correct
73 Correct 152 ms 52716 KB Output is correct
74 Correct 155 ms 54252 KB Output is correct
75 Correct 155 ms 55916 KB Output is correct
76 Correct 160 ms 57324 KB Output is correct
77 Correct 162 ms 57836 KB Output is correct
78 Correct 159 ms 57964 KB Output is correct
79 Correct 138 ms 30492 KB Output is correct
80 Correct 140 ms 31852 KB Output is correct
81 Correct 140 ms 32108 KB Output is correct
82 Correct 168 ms 60700 KB Output is correct
83 Correct 159 ms 60652 KB Output is correct
84 Correct 148 ms 25708 KB Output is correct
85 Correct 158 ms 59500 KB Output is correct
86 Correct 174 ms 74604 KB Output is correct
87 Correct 158 ms 58732 KB Output is correct
88 Correct 158 ms 59372 KB Output is correct
89 Correct 163 ms 68076 KB Output is correct
90 Correct 105 ms 44652 KB Output is correct
91 Correct 164 ms 63340 KB Output is correct
92 Correct 162 ms 65004 KB Output is correct
93 Correct 172 ms 73708 KB Output is correct
94 Correct 166 ms 66796 KB Output is correct
95 Correct 157 ms 60652 KB Output is correct
96 Correct 159 ms 60524 KB Output is correct
97 Correct 175 ms 74476 KB Output is correct
98 Correct 163 ms 60140 KB Output is correct
99 Correct 166 ms 66412 KB Output is correct
100 Correct 172 ms 73324 KB Output is correct