oj.uz

답안 #832665

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
832665 2023-08-21T13:22:04 Z vjudge1 Bomb (IZhO17_bomb) C++14
58 / 100
 1000 ms 55552 KB 
#include<bits/stdc++.h>

#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
using namespace std;

#define ll long long
#define rep(i,n,N) for(int i = n; i<=N; ++i)
#define rap(i,n,N) for(int i = n; i>=N; --i)
#define For(i,n,N) for(int i = n; i< N; ++i)
#define endl '\n'
#define pb push_back
#define all(x) x.begin(),x.end()
#define mems(x,y) memset(x,y,sizeof x)
#define ari(x) array<int,x>
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fi first
#define se second
const int MAX = 2500 + 5;
mt19937 rng(time(NULL));

int n,m,mnr,mnc,cnt,y[MAX][MAX],z[MAX][MAX],ans;
char c;
bool x[MAX][MAX];
vector<ari(3)> v;

inline bool cek(int r,int c,int dr,int dc){
	return y[r][c] - y[r-dr][c] - y[r][c-dc] + y[r-dr][c-dc] == dr*dc;
}

inline bool solve(int dr,int dc){
	rep(i,1,n)mems(z[i], 0);
	rep(i,dr,n)rep(j,dc,m)if(x[i][j] && cek(i,j,dr,dc)){
		z[i][j]++;
		z[i-dr][j]--;
		z[i][j-dc]--;
		z[i-dr][j-dc]++;
	}
	rap(i,n,1)rap(j,m,1){
		z[i][j]+= z[i+1][j]+z[i][j+1]-z[i+1][j+1];
		if((!!z[i][j])!=x[i][j])return 0;
	}
	return 1;
}

int main(){
	ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
	cin>>n>>m;
	mnr = n, mnc = m;
	rep(i,1,n){
		rep(j,1,m){
			cin>>c;
			x[i][j] = c=='1';
			y[i][j] = y[i-1][j]+y[i][j-1]-y[i-1][j-1]+x[i][j];
			if(x[i][j])++cnt;
			else if(cnt)mnc = min(mnc, cnt), cnt = 0;
		}
		if(cnt)mnc = min(mnc, cnt), cnt = 0;
	}
	rep(j,1,m){
		rep(i,1,n){
			if(x[i][j])++cnt;
			else if(cnt)mnr = min(mnr, cnt), cnt = 0;
		}
		if(cnt)mnr = min(mnr, cnt), cnt = 0;
	}
	if(solve(mnr, mnc))return cout<<mnr*mnc<<endl,0;
	if(n*m > 2e6){
		int k = min(mnr, mnc);
		while(!solve(k, k))--k;
		int r,c;
		r = c = k;
		while(solve(r+1, c))++r;
		while(solve(r, c+1))++c;
		cout<<r*c<<endl;
		return 0;
	}
	ans = mnc;
	rep(i,2,mnr){
		while(i*mnc>ans && !solve(i, mnc))--mnc;
		ans = max(ans, i*mnc);
	}
	cout<<ans<<endl;
	return 0;
}

Subtask #1
58.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 596 KB Output is correct
3 Correct 16 ms 40916 KB Output is correct
4 Correct 16 ms 40916 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 596 KB Output is correct
9 Correct 1 ms 596 KB Output is correct
10 Correct 0 ms 468 KB Output is correct
11 Correct 1 ms 596 KB Output is correct
12 Correct 0 ms 468 KB Output is correct
13 Correct 0 ms 468 KB Output is correct
14 Correct 1 ms 596 KB Output is correct
15 Correct 0 ms 596 KB Output is correct
16 Correct 0 ms 596 KB Output is correct
17 Correct 1 ms 1364 KB Output is correct
18 Correct 1 ms 1492 KB Output is correct
19 Correct 2 ms 1876 KB Output is correct
20 Correct 2 ms 1876 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 1 ms 1620 KB Output is correct
23 Correct 2 ms 2004 KB Output is correct
24 Correct 1 ms 1620 KB Output is correct
25 Correct 2 ms 2004 KB Output is correct
26 Correct 1 ms 2004 KB Output is correct
27 Correct 3 ms 5460 KB Output is correct
28 Correct 6 ms 5460 KB Output is correct
29 Correct 36 ms 7148 KB Output is correct
30 Correct 53 ms 8020 KB Output is correct
31 Correct 39 ms 6356 KB Output is correct
32 Correct 24 ms 7508 KB Output is correct
33 Correct 63 ms 8452 KB Output is correct
34 Correct 6 ms 6364 KB Output is correct
35 Correct 73 ms 8456 KB Output is correct
36 Correct 6 ms 8404 KB Output is correct
37 Correct 1 ms 596 KB Output is correct
38 Correct 119 ms 55428 KB Output is correct
39 Correct 0 ms 596 KB Output is correct
40 Correct 690 ms 17584 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 3 ms 2004 KB Output is correct
43 Correct 104 ms 55428 KB Output is correct
44 Correct 100 ms 8404 KB Output is correct
45 Execution timed out 1094 ms 55356 KB Time limit exceeded
46 Correct 126 ms 55428 KB Output is correct
47 Execution timed out 1098 ms 55400 KB Time limit exceeded
48 Correct 833 ms 55472 KB Output is correct
49 Correct 109 ms 55476 KB Output is correct
50 Execution timed out 1093 ms 55432 KB Time limit exceeded
51 Execution timed out 1088 ms 55376 KB Time limit exceeded
52 Execution timed out 1090 ms 55372 KB Time limit exceeded
53 Execution timed out 1077 ms 55456 KB Time limit exceeded
54 Correct 666 ms 55472 KB Output is correct
55 Correct 370 ms 55372 KB Output is correct
56 Correct 99 ms 55428 KB Output is correct
57 Execution timed out 1091 ms 55372 KB Time limit exceeded
58 Execution timed out 1076 ms 55464 KB Time limit exceeded
59 Correct 506 ms 55376 KB Output is correct
60 Correct 107 ms 55424 KB Output is correct
61 Correct 104 ms 55476 KB Output is correct
62 Correct 103 ms 55468 KB Output is correct
63 Correct 98 ms 55372 KB Output is correct
64 Correct 101 ms 55396 KB Output is correct
65 Correct 783 ms 55472 KB Output is correct
66 Execution timed out 1084 ms 55416 KB Time limit exceeded
67 Execution timed out 1081 ms 55552 KB Time limit exceeded
68 Execution timed out 1087 ms 55372 KB Time limit exceeded
69 Execution timed out 1079 ms 55464 KB Time limit exceeded
70 Execution timed out 1054 ms 44416 KB Time limit exceeded
71 Execution timed out 1086 ms 55376 KB Time limit exceeded
72 Execution timed out 1084 ms 55404 KB Time limit exceeded
73 Execution timed out 1084 ms 55364 KB Time limit exceeded
74 Execution timed out 1090 ms 55464 KB Time limit exceeded
75 Execution timed out 1086 ms 55412 KB Time limit exceeded
76 Execution timed out 1085 ms 55376 KB Time limit exceeded
77 Execution timed out 1095 ms 55372 KB Time limit exceeded
78 Execution timed out 1079 ms 55452 KB Time limit exceeded
79 Correct 767 ms 55472 KB Output is correct
80 Execution timed out 1082 ms 55464 KB Time limit exceeded
81 Execution timed out 1080 ms 55376 KB Time limit exceeded
82 Execution timed out 1080 ms 55448 KB Time limit exceeded
83 Execution timed out 1089 ms 55372 KB Time limit exceeded
84 Execution timed out 1083 ms 55400 KB Time limit exceeded
85 Execution timed out 1082 ms 55372 KB Time limit exceeded
86 Execution timed out 1091 ms 55448 KB Time limit exceeded
87 Execution timed out 1076 ms 55376 KB Time limit exceeded
88 Execution timed out 1089 ms 55372 KB Time limit exceeded
89 Execution timed out 1079 ms 55424 KB Time limit exceeded
90 Execution timed out 1078 ms 44412 KB Time limit exceeded
91 Execution timed out 1076 ms 55404 KB Time limit exceeded
92 Execution timed out 1077 ms 55460 KB Time limit exceeded
93 Execution timed out 1088 ms 55408 KB Time limit exceeded
94 Execution timed out 1077 ms 55360 KB Time limit exceeded
95 Execution timed out 1077 ms 55460 KB Time limit exceeded
96 Execution timed out 1079 ms 55368 KB Time limit exceeded
97 Execution timed out 1033 ms 55468 KB Time limit exceeded
98 Execution timed out 1081 ms 55460 KB Time limit exceeded
99 Execution timed out 1088 ms 55428 KB Time limit exceeded
100 Execution timed out 1090 ms 55444 KB Time limit exceeded