oj.uz

답안 #171024

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
171024 2019-12-27T05:33:56 Z super_j6 Bomb (IZhO17_bomb) C++14
20 / 100
 1000 ms 50064 KB 
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string.h>
using namespace std;
#define endl '\n'
#define pi pair<int, int>

const int maxn = 2502;
int n, m;
int a[maxn][maxn];

bool solve(int x, int y){
	int b[maxn][maxn];
	memset(b, 0, sizeof(b));
	for(int i = x; i <= n; i++){
		for(int j = y; j <= m; j++){
			if(a[i][j] - a[i - x][j] - a[i][j - y] + a[i - x][j - y] == x * y){
				b[i - x + 1][j - y + 1]++;
				b[i - x + 1][j + 1]--;
				b[i + 1][j - y + 1]--;
				b[i + 1][j + 1]++;
			}
		}
	}
	
	int amt = a[n][m];
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			b[i][j] += b[i - 1][j] + b[i][j - 1] - b[i - 1][j - 1];
			amt -= (b[i][j] > 0);
		}
	}
	return amt == 0;
}

int solveh(int x){
	int l = 0, r = n + 1;
	while(r - l > 1){
		int mid = (l + r) / 2;
		if(solve(mid, x)) l = mid;
		else r = mid;
	}
	return l;
}

int solvew(int x){
	int l = 0, r = m + 1;
	while(r - l > 1){
		int mid = (l + r) / 2;
		if(solve(x, mid)) l = mid;
		else r = mid;
	}
	return l;
}

int main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	
	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' + a[i - 1][j] + a[i][j - 1] - a[i - 1][j - 1];
		}
	}
	
	int h = solveh(1), w = solvew(1);
	int ret = max(h * solvew(h), w * solveh(w));
	cout << ret << endl;

	return 0;
}

Subtask #1
20.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 51 ms 24824 KB Output is correct
2 Correct 48 ms 24952 KB Output is correct
3 Correct 94 ms 34932 KB Output is correct
4 Correct 118 ms 34936 KB Output is correct
5 Correct 89 ms 24824 KB Output is correct
6 Correct 77 ms 24824 KB Output is correct
7 Correct 49 ms 24824 KB Output is correct
8 Incorrect 52 ms 24964 KB Output isn't correct
9 Incorrect 56 ms 24952 KB Output isn't correct
10 Correct 57 ms 24824 KB Output is correct
11 Incorrect 57 ms 25080 KB Output isn't correct
12 Correct 52 ms 24952 KB Output is correct
13 Correct 54 ms 24952 KB Output is correct
14 Correct 59 ms 24952 KB Output is correct
15 Incorrect 58 ms 24952 KB Output isn't correct
16 Correct 57 ms 24952 KB Output is correct
17 Correct 79 ms 25080 KB Output is correct
18 Incorrect 69 ms 25208 KB Output isn't correct
19 Incorrect 76 ms 25336 KB Output isn't correct
20 Incorrect 89 ms 25296 KB Output isn't correct
21 Incorrect 64 ms 25084 KB Output isn't correct
22 Incorrect 76 ms 25208 KB Output isn't correct
23 Incorrect 88 ms 25336 KB Output isn't correct
24 Incorrect 69 ms 25208 KB Output isn't correct
25 Incorrect 101 ms 25368 KB Output isn't correct
26 Correct 93 ms 25336 KB Output is correct
27 Correct 121 ms 26360 KB Output is correct
28 Incorrect 146 ms 26624 KB Output isn't correct
29 Incorrect 139 ms 27000 KB Output isn't correct
30 Incorrect 177 ms 27640 KB Output isn't correct
31 Incorrect 145 ms 27000 KB Output isn't correct
32 Incorrect 183 ms 27256 KB Output isn't correct
33 Incorrect 184 ms 27720 KB Output isn't correct
34 Incorrect 118 ms 26744 KB Output isn't correct
35 Incorrect 156 ms 27640 KB Output isn't correct
36 Correct 173 ms 27640 KB Output is correct
37 Correct 49 ms 24952 KB Output is correct
38 Execution timed out 1071 ms 49784 KB Time limit exceeded
39 Correct 58 ms 24892 KB Output is correct
40 Correct 325 ms 31736 KB Output is correct
41 Correct 63 ms 24952 KB Output is correct
42 Incorrect 93 ms 25336 KB Output isn't correct
43 Execution timed out 1070 ms 49960 KB Time limit exceeded
44 Incorrect 169 ms 27768 KB Output isn't correct
45 Execution timed out 1083 ms 49784 KB Time limit exceeded
46 Execution timed out 1067 ms 49896 KB Time limit exceeded
47 Execution timed out 1082 ms 49784 KB Time limit exceeded
48 Execution timed out 1083 ms 49784 KB Time limit exceeded
49 Execution timed out 1078 ms 49784 KB Time limit exceeded
50 Execution timed out 1089 ms 49756 KB Time limit exceeded
51 Execution timed out 1081 ms 50040 KB Time limit exceeded
52 Execution timed out 1073 ms 50040 KB Time limit exceeded
53 Execution timed out 1056 ms 49912 KB Time limit exceeded
54 Execution timed out 1067 ms 50040 KB Time limit exceeded
55 Execution timed out 1087 ms 50040 KB Time limit exceeded
56 Execution timed out 1082 ms 49916 KB Time limit exceeded
57 Execution timed out 1081 ms 49912 KB Time limit exceeded
58 Execution timed out 1083 ms 50064 KB Time limit exceeded
59 Execution timed out 1084 ms 49876 KB Time limit exceeded
60 Execution timed out 1081 ms 49912 KB Time limit exceeded
61 Execution timed out 1083 ms 49932 KB Time limit exceeded
62 Execution timed out 1072 ms 49976 KB Time limit exceeded
63 Execution timed out 1085 ms 49820 KB Time limit exceeded
64 Execution timed out 1073 ms 49784 KB Time limit exceeded
65 Execution timed out 1064 ms 49856 KB Time limit exceeded
66 Execution timed out 1071 ms 49784 KB Time limit exceeded
67 Execution timed out 1086 ms 49784 KB Time limit exceeded
68 Execution timed out 1090 ms 49788 KB Time limit exceeded
69 Execution timed out 1051 ms 49768 KB Time limit exceeded
70 Execution timed out 1090 ms 44920 KB Time limit exceeded
71 Execution timed out 1075 ms 49796 KB Time limit exceeded
72 Execution timed out 1087 ms 49784 KB Time limit exceeded
73 Execution timed out 1081 ms 49836 KB Time limit exceeded
74 Execution timed out 1086 ms 49788 KB Time limit exceeded
75 Execution timed out 1085 ms 49912 KB Time limit exceeded
76 Execution timed out 1084 ms 50016 KB Time limit exceeded
77 Execution timed out 1083 ms 49912 KB Time limit exceeded
78 Execution timed out 1075 ms 49528 KB Time limit exceeded
79 Execution timed out 1094 ms 49272 KB Time limit exceeded
80 Execution timed out 1092 ms 49400 KB Time limit exceeded
81 Execution timed out 1088 ms 49540 KB Time limit exceeded
82 Execution timed out 1088 ms 49272 KB Time limit exceeded
83 Execution timed out 1083 ms 49272 KB Time limit exceeded
84 Execution timed out 1082 ms 49272 KB Time limit exceeded
85 Execution timed out 1087 ms 49272 KB Time limit exceeded
86 Execution timed out 1087 ms 49332 KB Time limit exceeded
87 Execution timed out 1081 ms 49272 KB Time limit exceeded
88 Execution timed out 1069 ms 49352 KB Time limit exceeded
89 Execution timed out 1089 ms 49276 KB Time limit exceeded
90 Execution timed out 1077 ms 44544 KB Time limit exceeded
91 Execution timed out 1078 ms 49272 KB Time limit exceeded
92 Execution timed out 1081 ms 49272 KB Time limit exceeded
93 Execution timed out 1082 ms 49400 KB Time limit exceeded
94 Execution timed out 1076 ms 49272 KB Time limit exceeded
95 Execution timed out 1082 ms 49272 KB Time limit exceeded
96 Execution timed out 1090 ms 49272 KB Time limit exceeded
97 Execution timed out 1093 ms 49272 KB Time limit exceeded
98 Execution timed out 1087 ms 49272 KB Time limit exceeded
99 Execution timed out 1084 ms 49272 KB Time limit exceeded
100 Execution timed out 1058 ms 49520 KB Time limit exceeded