| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1102875 |
2024-10-19T06:20:50 Z |
KasymK |
Bomb (IZhO17_bomb) |
C++17 |
|
338 ms |
108104 KB |
#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 2505;
int cep[N][N], sag[N][N], up[N][N], as[N][N], c[N];
char a[N][N];
int main(){
int n, m;
scanf("%d%d", &n, &m);
for(int i = 1; i <= n; ++i)
for(int j = 1; j <= m; ++j)
scanf(" %c", &a[i][j]);
for(int i = 1; i <= n; ++i){
for(int j = 1; j <= m; ++j)
cep[i][j] = (a[i][j]=='1'?cep[i][j-1]+1:0);
for(int j = m; j >= 1; --j)
sag[i][j] = (a[i][j]=='1'?sag[i][j+1]+1:0);
}
for(int j = 1; j <= m; ++j){
for(int i = 1; i <= n; ++i)
up[i][j] = (a[i][j]=='1'?up[i-1][j]+1:0);
for(int i = n; i >= 1; --i)
as[i][j] = (a[i][j]=='1'?as[i+1][j]+1:0);
}
int A = n, B = m;
for(int i = 1; i <= n; ++i)
for(int j = 1; j <= m; ++j)
if(a[i][j] == '1')
umin(A, up[i][j]+as[i][j]-1), umin(B, cep[i][j]+sag[i][j]-1);
for(int i = 1; i <= A; ++i)
c[i] = B;
for(int i = 1; i <= n; ++i)
for(int j = 1; j <= m; ++j){
if(a[i][j] != '1')
continue;
int now = B;
if(as[i][j]==1)
for(int k = i; k >= i-A+1; --k){
if(cep[i][j]==1)
umin(now, sag[k][j]), umin(c[i-k+1], now);
if(sag[i][j]==1)
umin(now, cep[k][j]), umin(c[i-k+1], now);
}
else if(up[i][j]==1)
for(int k = i; k <= i+A-1; ++k){
if(cep[i][j]==1)
umin(now, sag[k][j]), umin(c[k-i+1], now);
if(sag[i][j]==1)
umin(now, cep[k][j]), umin(c[k-i+1], now);
}
}
int answer = 1;
for(int i = 1; i <= A; ++i)
umax(answer, i*c[i]);
printf("%d\n", answer);
}
Compilation message
bomb.cpp: In function 'int main()':
bomb.cpp:21:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
21 | scanf("%d%d", &n, &m);
| ~~~~~^~~~~~~~~~~~~~~~
bomb.cpp:24:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
24 | scanf(" %c", &a[i][j]);
| ~~~~~^~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
8528 KB |
Output is correct |
| 2 |
Correct |
1 ms |
4688 KB |
Output is correct |
| 3 |
Correct |
25 ms |
73296 KB |
Output is correct |
| 4 |
Correct |
26 ms |
73296 KB |
Output is correct |
| 5 |
Correct |
1 ms |
336 KB |
Output is correct |
| 6 |
Correct |
1 ms |
336 KB |
Output is correct |
| 7 |
Correct |
1 ms |
336 KB |
Output is correct |
| 8 |
Correct |
2 ms |
6736 KB |
Output is correct |
| 9 |
Correct |
2 ms |
6736 KB |
Output is correct |
| 10 |
Correct |
1 ms |
6480 KB |
Output is correct |
| 11 |
Correct |
1 ms |
6736 KB |
Output is correct |
| 12 |
Correct |
1 ms |
4860 KB |
Output is correct |
| 13 |
Correct |
2 ms |
8528 KB |
Output is correct |
| 14 |
Correct |
1 ms |
4700 KB |
Output is correct |
| 15 |
Correct |
1 ms |
4688 KB |
Output is correct |
| 16 |
Correct |
1 ms |
2640 KB |
Output is correct |
| 17 |
Correct |
2 ms |
16976 KB |
Output is correct |
| 18 |
Correct |
3 ms |
13136 KB |
Output is correct |
| 19 |
Correct |
3 ms |
15184 KB |
Output is correct |
| 20 |
Correct |
2 ms |
15184 KB |
Output is correct |
| 21 |
Correct |
3 ms |
16976 KB |
Output is correct |
| 22 |
Correct |
3 ms |
19024 KB |
Output is correct |
| 23 |
Correct |
3 ms |
15352 KB |
Output is correct |
| 24 |
Correct |
3 ms |
15184 KB |
Output is correct |
| 25 |
Correct |
3 ms |
15184 KB |
Output is correct |
| 26 |
Correct |
2 ms |
8016 KB |
Output is correct |
| 27 |
Correct |
8 ms |
14192 KB |
Output is correct |
| 28 |
Correct |
7 ms |
23376 KB |
Output is correct |
| 29 |
Correct |
9 ms |
25948 KB |
Output is correct |
| 30 |
Correct |
11 ms |
22728 KB |
Output is correct |
| 31 |
Correct |
9 ms |
22608 KB |
Output is correct |
| 32 |
Correct |
9 ms |
22608 KB |
Output is correct |
| 33 |
Correct |
11 ms |
26908 KB |
Output is correct |
| 34 |
Correct |
7 ms |
27324 KB |
Output is correct |
| 35 |
Correct |
10 ms |
27508 KB |
Output is correct |
| 36 |
Correct |
13 ms |
20304 KB |
Output is correct |
| 37 |
Correct |
1 ms |
6736 KB |
Output is correct |
| 38 |
Correct |
290 ms |
107336 KB |
Output is correct |
| 39 |
Correct |
1 ms |
6736 KB |
Output is correct |
| 40 |
Incorrect |
42 ms |
37484 KB |
Output isn't correct |
| 41 |
Correct |
1 ms |
6736 KB |
Output is correct |
| 42 |
Correct |
3 ms |
13648 KB |
Output is correct |
| 43 |
Correct |
289 ms |
106516 KB |
Output is correct |
| 44 |
Correct |
12 ms |
25680 KB |
Output is correct |
| 45 |
Correct |
302 ms |
104540 KB |
Output is correct |
| 46 |
Correct |
294 ms |
104520 KB |
Output is correct |
| 47 |
Correct |
290 ms |
107848 KB |
Output is correct |
| 48 |
Correct |
307 ms |
104560 KB |
Output is correct |
| 49 |
Correct |
301 ms |
104556 KB |
Output is correct |
| 50 |
Correct |
338 ms |
104552 KB |
Output is correct |
| 51 |
Correct |
312 ms |
104556 KB |
Output is correct |
| 52 |
Correct |
332 ms |
106316 KB |
Output is correct |
| 53 |
Correct |
316 ms |
104552 KB |
Output is correct |
| 54 |
Correct |
294 ms |
104440 KB |
Output is correct |
| 55 |
Correct |
320 ms |
104520 KB |
Output is correct |
| 56 |
Correct |
323 ms |
104568 KB |
Output is correct |
| 57 |
Correct |
327 ms |
104556 KB |
Output is correct |
| 58 |
Correct |
306 ms |
108104 KB |
Output is correct |
| 59 |
Correct |
309 ms |
104520 KB |
Output is correct |
| 60 |
Correct |
305 ms |
104520 KB |
Output is correct |
| 61 |
Correct |
304 ms |
107116 KB |
Output is correct |
| 62 |
Correct |
318 ms |
107848 KB |
Output is correct |
| 63 |
Correct |
326 ms |
104548 KB |
Output is correct |
| 64 |
Correct |
317 ms |
104520 KB |
Output is correct |
| 65 |
Correct |
323 ms |
104676 KB |
Output is correct |
| 66 |
Correct |
320 ms |
104552 KB |
Output is correct |
| 67 |
Correct |
310 ms |
104552 KB |
Output is correct |
| 68 |
Correct |
293 ms |
104520 KB |
Output is correct |
| 69 |
Correct |
286 ms |
104432 KB |
Output is correct |
| 70 |
Correct |
185 ms |
89196 KB |
Output is correct |
| 71 |
Correct |
271 ms |
104556 KB |
Output is correct |
| 72 |
Correct |
274 ms |
104528 KB |
Output is correct |
| 73 |
Correct |
282 ms |
104564 KB |
Output is correct |
| 74 |
Correct |
280 ms |
104520 KB |
Output is correct |
| 75 |
Correct |
274 ms |
104520 KB |
Output is correct |
| 76 |
Correct |
314 ms |
104520 KB |
Output is correct |
| 77 |
Correct |
301 ms |
104520 KB |
Output is correct |
| 78 |
Correct |
309 ms |
104556 KB |
Output is correct |
| 79 |
Correct |
287 ms |
104520 KB |
Output is correct |
| 80 |
Correct |
286 ms |
104556 KB |
Output is correct |
| 81 |
Correct |
327 ms |
107772 KB |
Output is correct |
| 82 |
Correct |
298 ms |
104520 KB |
Output is correct |
| 83 |
Correct |
316 ms |
104520 KB |
Output is correct |
| 84 |
Correct |
286 ms |
104552 KB |
Output is correct |
| 85 |
Correct |
314 ms |
107848 KB |
Output is correct |
| 86 |
Correct |
312 ms |
104788 KB |
Output is correct |
| 87 |
Correct |
297 ms |
104520 KB |
Output is correct |
| 88 |
Correct |
323 ms |
104428 KB |
Output is correct |
| 89 |
Correct |
304 ms |
104520 KB |
Output is correct |
| 90 |
Correct |
202 ms |
88392 KB |
Output is correct |
| 91 |
Correct |
320 ms |
104524 KB |
Output is correct |
| 92 |
Correct |
312 ms |
104520 KB |
Output is correct |
| 93 |
Correct |
318 ms |
104520 KB |
Output is correct |
| 94 |
Correct |
305 ms |
104552 KB |
Output is correct |
| 95 |
Correct |
316 ms |
104552 KB |
Output is correct |
| 96 |
Correct |
279 ms |
104520 KB |
Output is correct |
| 97 |
Correct |
276 ms |
104520 KB |
Output is correct |
| 98 |
Correct |
280 ms |
107852 KB |
Output is correct |
| 99 |
Correct |
280 ms |
104776 KB |
Output is correct |
| 100 |
Correct |
264 ms |
104536 KB |
Output is correct |
