| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 936263 |
2024-03-01T13:46:28 Z |
guagua0407 |
Bomb (IZhO17_bomb) |
C++17 |
|
191 ms |
60056 KB |
#include <bits/stdc++.h>
using namespace std;
const int mxN=2500;
int n, m, mxw=mxN, mxh=mxN, u[mxN][mxN], d[mxN][mxN], a[mxN], ans;
string g[mxN];
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cin >> n >> m;
for(int i=0; i<n; ++i) {
cin >> g[i];
for(int j=0, w=0; j<m; ++j) {
w=g[i][j]&1?w+1:0;
if(w&&(j+1>=m||g[i][j+1]&1^1))
mxw=min(w, mxw);
}
}
for(int j=0; j<m; ++j) {
for(int i=0, h=0; i<n; ++i) {
h=g[i][j]&1?h+1:0;
if(h&&(i+1>=n||g[i+1][j]&1^1))
mxh=min(h, mxh);
u[i][j]=i&&g[i-1][j]&1?u[i-1][j]:i;
}
for(int i=n-1; ~i; --i)
d[i][j]=i<n-1&&g[i+1][j]&1?d[i+1][j]:i;
}
for(int i=0; i<mxw; ++i)
a[i]=1e9;
auto c=[]() {
for(int i=0; i<n; ++i) {
for(int j=0; j<m; ++j) {
if(j&&g[i][j-1]&1||g[i][j]&1^1)
continue;
for(int k=0, l=0, r=n; k<mxw; ++k) {
l=max(u[i][j+k], l);
r=min(d[i][j+k], r);
a[k]=min(r-l+1, a[k]);
}
}
}
};
c();
for(int i=0; i<n; ++i) {
reverse(g[i].begin(), g[i].end());
reverse(u[i], u[i]+m);
reverse(d[i], d[i]+m);
}
c();
for(int i=0; i<mxw; ++i)
ans=max((i+1)*a[i], ans);
cout << ans;
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:17:28: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
17 | if(w&&(j+1>=m||g[i][j+1]&1^1))
bomb.cpp:24:28: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
24 | if(h&&(i+1>=n||g[i+1][j]&1^1))
bomb.cpp: In lambda function:
bomb.cpp:36:31: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
36 | if(j&&g[i][j-1]&1||g[i][j]&1^1)
bomb.cpp:36:9: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
36 | if(j&&g[i][j-1]&1||g[i][j]&1^1)
| ~^~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 2 |
Correct |
2 ms |
4444 KB |
Output is correct |
| 3 |
Correct |
9 ms |
37564 KB |
Output is correct |
| 4 |
Correct |
7 ms |
36188 KB |
Output is correct |
| 5 |
Correct |
1 ms |
2396 KB |
Output is correct |
| 6 |
Correct |
1 ms |
2392 KB |
Output is correct |
| 7 |
Incorrect |
1 ms |
2396 KB |
Output isn't correct |
| 8 |
Correct |
1 ms |
4452 KB |
Output is correct |
| 9 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 10 |
Correct |
1 ms |
4644 KB |
Output is correct |
| 11 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 13 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 16 |
Correct |
1 ms |
4440 KB |
Output is correct |
| 17 |
Correct |
1 ms |
6748 KB |
Output is correct |
| 18 |
Correct |
1 ms |
6744 KB |
Output is correct |
| 19 |
Correct |
1 ms |
6744 KB |
Output is correct |
| 20 |
Correct |
1 ms |
6748 KB |
Output is correct |
| 21 |
Correct |
1 ms |
6684 KB |
Output is correct |
| 22 |
Correct |
1 ms |
6748 KB |
Output is correct |
| 23 |
Correct |
1 ms |
6720 KB |
Output is correct |
| 24 |
Correct |
1 ms |
6748 KB |
Output is correct |
| 25 |
Correct |
2 ms |
6748 KB |
Output is correct |
| 26 |
Incorrect |
1 ms |
6744 KB |
Output isn't correct |
| 27 |
Incorrect |
2 ms |
10844 KB |
Output isn't correct |
| 28 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 29 |
Correct |
4 ms |
10908 KB |
Output is correct |
| 30 |
Correct |
4 ms |
13148 KB |
Output is correct |
| 31 |
Correct |
3 ms |
11160 KB |
Output is correct |
| 32 |
Correct |
3 ms |
11100 KB |
Output is correct |
| 33 |
Correct |
4 ms |
15196 KB |
Output is correct |
| 34 |
Correct |
3 ms |
10844 KB |
Output is correct |
| 35 |
Correct |
4 ms |
15196 KB |
Output is correct |
| 36 |
Incorrect |
4 ms |
15196 KB |
Output isn't correct |
| 37 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 38 |
Correct |
167 ms |
59924 KB |
Output is correct |
| 39 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 40 |
Correct |
15 ms |
24500 KB |
Output is correct |
| 41 |
Correct |
1 ms |
4444 KB |
Output is correct |
| 42 |
Correct |
2 ms |
6748 KB |
Output is correct |
| 43 |
Correct |
162 ms |
59728 KB |
Output is correct |
| 44 |
Correct |
4 ms |
15196 KB |
Output is correct |
| 45 |
Correct |
153 ms |
59732 KB |
Output is correct |
| 46 |
Correct |
180 ms |
59676 KB |
Output is correct |
| 47 |
Correct |
152 ms |
59808 KB |
Output is correct |
| 48 |
Correct |
138 ms |
59924 KB |
Output is correct |
| 49 |
Incorrect |
149 ms |
59900 KB |
Output isn't correct |
| 50 |
Correct |
149 ms |
59844 KB |
Output is correct |
| 51 |
Correct |
151 ms |
59884 KB |
Output is correct |
| 52 |
Correct |
159 ms |
59928 KB |
Output is correct |
| 53 |
Correct |
174 ms |
59928 KB |
Output is correct |
| 54 |
Correct |
159 ms |
59928 KB |
Output is correct |
| 55 |
Correct |
154 ms |
59872 KB |
Output is correct |
| 56 |
Correct |
170 ms |
59728 KB |
Output is correct |
| 57 |
Correct |
147 ms |
59792 KB |
Output is correct |
| 58 |
Correct |
152 ms |
59928 KB |
Output is correct |
| 59 |
Correct |
161 ms |
59676 KB |
Output is correct |
| 60 |
Incorrect |
152 ms |
59928 KB |
Output isn't correct |
| 61 |
Incorrect |
155 ms |
60056 KB |
Output isn't correct |
| 62 |
Incorrect |
148 ms |
59928 KB |
Output isn't correct |
| 63 |
Incorrect |
155 ms |
59936 KB |
Output isn't correct |
| 64 |
Incorrect |
131 ms |
59932 KB |
Output isn't correct |
| 65 |
Correct |
131 ms |
59732 KB |
Output is correct |
| 66 |
Correct |
181 ms |
59932 KB |
Output is correct |
| 67 |
Correct |
157 ms |
59812 KB |
Output is correct |
| 68 |
Correct |
143 ms |
59984 KB |
Output is correct |
| 69 |
Correct |
144 ms |
59924 KB |
Output is correct |
| 70 |
Correct |
90 ms |
50700 KB |
Output is correct |
| 71 |
Correct |
167 ms |
59924 KB |
Output is correct |
| 72 |
Correct |
179 ms |
59768 KB |
Output is correct |
| 73 |
Correct |
173 ms |
59924 KB |
Output is correct |
| 74 |
Correct |
171 ms |
59928 KB |
Output is correct |
| 75 |
Correct |
145 ms |
59924 KB |
Output is correct |
| 76 |
Correct |
165 ms |
59924 KB |
Output is correct |
| 77 |
Correct |
150 ms |
59728 KB |
Output is correct |
| 78 |
Correct |
144 ms |
59852 KB |
Output is correct |
| 79 |
Correct |
131 ms |
59732 KB |
Output is correct |
| 80 |
Correct |
167 ms |
59768 KB |
Output is correct |
| 81 |
Correct |
145 ms |
59800 KB |
Output is correct |
| 82 |
Correct |
181 ms |
59728 KB |
Output is correct |
| 83 |
Correct |
160 ms |
59716 KB |
Output is correct |
| 84 |
Correct |
151 ms |
59736 KB |
Output is correct |
| 85 |
Correct |
166 ms |
59848 KB |
Output is correct |
| 86 |
Correct |
164 ms |
59808 KB |
Output is correct |
| 87 |
Correct |
149 ms |
59932 KB |
Output is correct |
| 88 |
Correct |
182 ms |
59888 KB |
Output is correct |
| 89 |
Correct |
168 ms |
59928 KB |
Output is correct |
| 90 |
Correct |
87 ms |
50732 KB |
Output is correct |
| 91 |
Correct |
164 ms |
59848 KB |
Output is correct |
| 92 |
Correct |
170 ms |
59752 KB |
Output is correct |
| 93 |
Correct |
159 ms |
59472 KB |
Output is correct |
| 94 |
Correct |
175 ms |
59668 KB |
Output is correct |
| 95 |
Correct |
191 ms |
59664 KB |
Output is correct |
| 96 |
Correct |
162 ms |
59464 KB |
Output is correct |
| 97 |
Correct |
169 ms |
59472 KB |
Output is correct |
| 98 |
Correct |
172 ms |
59668 KB |
Output is correct |
| 99 |
Correct |
144 ms |
59472 KB |
Output is correct |
| 100 |
Correct |
147 ms |
59676 KB |
Output is correct |
