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

bomb

#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;
}

Subtask #1

100.0 / 100.0

#	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