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답안 #1017486

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1017486 2024-07-09T08:21:15 Z Gray Bomb (IZhO17_bomb) C++17
100 / 100
 264 ms 80468 KB 
#include <cassert>
#include <iostream>
#include <vector>
#define ll int
#define ln "\n"
#define ff first
#define ss second
#define ld long double
const ll INF = 1e9;
const ll MOD = 1e9+7;
using namespace std;

void solve(){
	ll n, m; cin >> n >> m;
	vector<vector<ll>> a(n+1, vector<ll>(m+1)), left(n+1, vector<ll>(m+2)), right(n+1, vector<ll>(m+2));
	for (ll i=1; i<=n; i++) 
		for (ll j=1; j<=m; j++){
			char x; cin >> x;
			a[i][j]=x-'0';
		}
	vector<ll> mxwid(n+1, m);
	for (ll i=1; i<=n; i++) {
		for (ll j=1; j<=m; j++){
			left[i][j] = a[i][j]?left[i][j-1]+1:0;
		}
		for (ll j=m; j>=1; j--){
			right[i][j] = a[i][j]?right[i][j+1]+1:0;
			if (a[i][j])mxwid[1]=min(mxwid[1], right[i][j]+left[i][j]-1);
		}
	}
	ll mxh=n;
	for (ll j=1; j<=m; j++){
		ll l=m, r=m, cc=0;
		for (ll i=1; i<=n; i++){
			if (a[i][j]){
				l=min(l, left[i][j]);
				r=min(r, right[i][j]);
				cc++;
				mxwid[cc]=min(mxwid[cc], l+r-1);
			}else{
				if (cc)mxh=min(mxh, cc);
				cc=0;
				l=m; r=m;
			}
		}
		if (cc) mxh=min(mxh, cc);
	}
	for (ll j=1; j<=m; j++){
		ll l=m, r=m, cc=0;
		for (ll i=n; i>=1; i--){
			if (a[i][j]){
				l=min(l, left[i][j]);
				r=min(r, right[i][j]);
				cc++;
				mxwid[cc]=min(mxwid[cc], l+r-1);
			}else{
				if (cc) mxh=min(mxh, cc);
				cc=0;
				l=m; r=m;
			}
		}
		if (cc) mxh=min(mxh, cc);
	}
	ll ans=0;
	for (ll i=1; i<=mxh; i++){
		// cout << i << ":" << mxwid[i] << ln;
		mxwid[i]=min(mxwid[i-1], mxwid[i]);
		ans=max(ans, mxwid[i]*i);
	}
	cout << ans << ln;
}
void setIO(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
	cout.tie(nullptr);
}
int main(){
	setIO();
	ll t=1;
	// cin >> t;
	while (t--) solve();
}

Subtask #1
100.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 860 KB Output is correct
4 Correct 1 ms 860 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 2 ms 1372 KB Output is correct
28 Correct 2 ms 1880 KB Output is correct
29 Correct 4 ms 1884 KB Output is correct
30 Correct 4 ms 2840 KB Output is correct
31 Correct 3 ms 2396 KB Output is correct
32 Correct 5 ms 2396 KB Output is correct
33 Correct 5 ms 2908 KB Output is correct
34 Correct 2 ms 1368 KB Output is correct
35 Correct 4 ms 2908 KB Output is correct
36 Correct 5 ms 3020 KB Output is correct
37 Correct 0 ms 344 KB Output is correct
38 Correct 222 ms 80468 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 21 ms 10412 KB Output is correct
41 Correct 0 ms 344 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 187 ms 80024 KB Output is correct
44 Correct 4 ms 2908 KB Output is correct
45 Correct 189 ms 80456 KB Output is correct
46 Correct 188 ms 80208 KB Output is correct
47 Correct 185 ms 80208 KB Output is correct
48 Correct 170 ms 80152 KB Output is correct
49 Correct 210 ms 80152 KB Output is correct
50 Correct 171 ms 80208 KB Output is correct
51 Correct 171 ms 80208 KB Output is correct
52 Correct 176 ms 80212 KB Output is correct
53 Correct 175 ms 80212 KB Output is correct
54 Correct 149 ms 80208 KB Output is correct
55 Correct 146 ms 80020 KB Output is correct
56 Correct 204 ms 80116 KB Output is correct
57 Correct 189 ms 80212 KB Output is correct
58 Correct 160 ms 80208 KB Output is correct
59 Correct 160 ms 80132 KB Output is correct
60 Correct 172 ms 80208 KB Output is correct
61 Correct 264 ms 80276 KB Output is correct
62 Correct 207 ms 80208 KB Output is correct
63 Correct 213 ms 80248 KB Output is correct
64 Correct 168 ms 80044 KB Output is correct
65 Correct 168 ms 80208 KB Output is correct
66 Correct 164 ms 80208 KB Output is correct
67 Correct 173 ms 80212 KB Output is correct
68 Correct 187 ms 80184 KB Output is correct
69 Correct 145 ms 80208 KB Output is correct
70 Correct 94 ms 51552 KB Output is correct
71 Correct 137 ms 80024 KB Output is correct
72 Correct 146 ms 80068 KB Output is correct
73 Correct 155 ms 80208 KB Output is correct
74 Correct 150 ms 80156 KB Output is correct
75 Correct 146 ms 80208 KB Output is correct
76 Correct 149 ms 80156 KB Output is correct
77 Correct 149 ms 80188 KB Output is correct
78 Correct 177 ms 80216 KB Output is correct
79 Correct 127 ms 80208 KB Output is correct
80 Correct 131 ms 80212 KB Output is correct
81 Correct 132 ms 80208 KB Output is correct
82 Correct 148 ms 80212 KB Output is correct
83 Correct 143 ms 80028 KB Output is correct
84 Correct 135 ms 80168 KB Output is correct
85 Correct 150 ms 80208 KB Output is correct
86 Correct 194 ms 80148 KB Output is correct
87 Correct 158 ms 80148 KB Output is correct
88 Correct 149 ms 80212 KB Output is correct
89 Correct 160 ms 80212 KB Output is correct
90 Correct 97 ms 51504 KB Output is correct
91 Correct 160 ms 80152 KB Output is correct
92 Correct 160 ms 80212 KB Output is correct
93 Correct 198 ms 80208 KB Output is correct
94 Correct 166 ms 80464 KB Output is correct
95 Correct 150 ms 80124 KB Output is correct
96 Correct 148 ms 80156 KB Output is correct
97 Correct 202 ms 80072 KB Output is correct
98 Correct 162 ms 80208 KB Output is correct
99 Correct 161 ms 80212 KB Output is correct
100 Correct 193 ms 80208 KB Output is correct