oj.uz

답안 #171028

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
171028 2019-12-27T05:42:59 Z super_j6 Bomb (IZhO17_bomb) C++14
44 / 100
 1000 ms 49536 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], b[maxn][maxn];

bool solve(int x, int y){
	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 ret = 0;
	for(int i = 1; i <= n && solve(i, 1); i++){
		int x = solvew(i);
		i = solveh(x);
		ret = max(ret, x * i);
	}
	
	cout << ret << endl;

	return 0;
}

Subtask #1
44.0 / 100.0

# 결과 실행 시간 메모리 Grader output
1 Correct 41 ms 24828 KB Output is correct
2 Correct 64 ms 24952 KB Output is correct
3 Correct 72 ms 34936 KB Output is correct
4 Correct 68 ms 34936 KB Output is correct
5 Correct 66 ms 24952 KB Output is correct
6 Correct 54 ms 24824 KB Output is correct
7 Correct 47 ms 24824 KB Output is correct
8 Correct 100 ms 24972 KB Output is correct
9 Correct 125 ms 24952 KB Output is correct
10 Correct 93 ms 24944 KB Output is correct
11 Correct 87 ms 24952 KB Output is correct
12 Correct 76 ms 24948 KB Output is correct
13 Correct 48 ms 24952 KB Output is correct
14 Correct 42 ms 24952 KB Output is correct
15 Correct 93 ms 24952 KB Output is correct
16 Correct 44 ms 24952 KB Output is correct
17 Correct 52 ms 25080 KB Output is correct
18 Correct 161 ms 25228 KB Output is correct
19 Correct 107 ms 25300 KB Output is correct
20 Correct 107 ms 25332 KB Output is correct
21 Correct 143 ms 25080 KB Output is correct
22 Correct 225 ms 25336 KB Output is correct
23 Correct 174 ms 25208 KB Output is correct
24 Correct 93 ms 25284 KB Output is correct
25 Correct 121 ms 25336 KB Output is correct
26 Correct 48 ms 25336 KB Output is correct
27 Correct 89 ms 26488 KB Output is correct
28 Correct 414 ms 26488 KB Output is correct
29 Execution timed out 1075 ms 26872 KB Time limit exceeded
30 Correct 249 ms 27384 KB Output is correct
31 Correct 275 ms 26872 KB Output is correct
32 Correct 244 ms 27132 KB Output is correct
33 Correct 262 ms 27512 KB Output is correct
34 Correct 329 ms 26648 KB Output is correct
35 Correct 359 ms 27512 KB Output is correct
36 Correct 175 ms 27512 KB Output is correct
37 Correct 182 ms 24972 KB Output is correct
38 Correct 880 ms 49368 KB Output is correct
39 Correct 86 ms 24952 KB Output is correct
40 Correct 520 ms 31452 KB Output is correct
41 Correct 172 ms 25080 KB Output is correct
42 Correct 969 ms 25340 KB Output is correct
43 Execution timed out 1068 ms 49400 KB Time limit exceeded
44 Execution timed out 1074 ms 27512 KB Time limit exceeded
45 Execution timed out 1082 ms 49404 KB Time limit exceeded
46 Correct 959 ms 49376 KB Output is correct
47 Execution timed out 1084 ms 49272 KB Time limit exceeded
48 Execution timed out 1068 ms 49400 KB Time limit exceeded
49 Execution timed out 1084 ms 49400 KB Time limit exceeded
50 Execution timed out 1076 ms 49404 KB Time limit exceeded
51 Execution timed out 1087 ms 49272 KB Time limit exceeded
52 Execution timed out 1084 ms 49400 KB Time limit exceeded
53 Execution timed out 1078 ms 49316 KB Time limit exceeded
54 Execution timed out 1077 ms 49400 KB Time limit exceeded
55 Execution timed out 1063 ms 49384 KB Time limit exceeded
56 Correct 891 ms 49400 KB Output is correct
57 Execution timed out 1084 ms 49272 KB Time limit exceeded
58 Execution timed out 1087 ms 49400 KB Time limit exceeded
59 Execution timed out 1080 ms 49416 KB Time limit exceeded
60 Execution timed out 1032 ms 49368 KB Time limit exceeded
61 Execution timed out 1076 ms 49272 KB Time limit exceeded
62 Execution timed out 1073 ms 49356 KB Time limit exceeded
63 Execution timed out 1073 ms 49400 KB Time limit exceeded
64 Correct 995 ms 49528 KB Output is correct
65 Execution timed out 1089 ms 49348 KB Time limit exceeded
66 Execution timed out 1062 ms 49400 KB Time limit exceeded
67 Execution timed out 1086 ms 49272 KB Time limit exceeded
68 Execution timed out 1080 ms 49536 KB Time limit exceeded
69 Execution timed out 1082 ms 49300 KB Time limit exceeded
70 Execution timed out 1073 ms 44408 KB Time limit exceeded
71 Execution timed out 1083 ms 49400 KB Time limit exceeded
72 Execution timed out 1073 ms 49404 KB Time limit exceeded
73 Execution timed out 1092 ms 49272 KB Time limit exceeded
74 Execution timed out 1086 ms 49400 KB Time limit exceeded
75 Execution timed out 1070 ms 49336 KB Time limit exceeded
76 Execution timed out 1092 ms 49272 KB Time limit exceeded
77 Execution timed out 1084 ms 49348 KB Time limit exceeded
78 Execution timed out 1085 ms 49272 KB Time limit exceeded
79 Execution timed out 1083 ms 49320 KB Time limit exceeded
80 Execution timed out 1074 ms 49296 KB Time limit exceeded
81 Execution timed out 1075 ms 49272 KB Time limit exceeded
82 Execution timed out 1081 ms 49400 KB Time limit exceeded
83 Execution timed out 1079 ms 49272 KB Time limit exceeded
84 Execution timed out 1083 ms 49272 KB Time limit exceeded
85 Execution timed out 1083 ms 49272 KB Time limit exceeded
86 Execution timed out 1080 ms 49272 KB Time limit exceeded
87 Execution timed out 1078 ms 49368 KB Time limit exceeded
88 Execution timed out 1078 ms 49400 KB Time limit exceeded
89 Execution timed out 1082 ms 49272 KB Time limit exceeded
90 Execution timed out 1080 ms 44408 KB Time limit exceeded
91 Execution timed out 1077 ms 49272 KB Time limit exceeded
92 Execution timed out 1063 ms 49400 KB Time limit exceeded
93 Execution timed out 1088 ms 49272 KB Time limit exceeded
94 Execution timed out 1073 ms 49272 KB Time limit exceeded
95 Execution timed out 1087 ms 49272 KB Time limit exceeded
96 Execution timed out 1085 ms 49400 KB Time limit exceeded
97 Execution timed out 1080 ms 49364 KB Time limit exceeded
98 Execution timed out 1076 ms 49272 KB Time limit exceeded
99 Execution timed out 1088 ms 49276 KB Time limit exceeded
100 Execution timed out 1091 ms 49272 KB Time limit exceeded