Submission #666364

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
666364	2022-11-28T10:04:09 Z	Kaztaev_Alisher	Bomb (IZhO17_bomb)	C++17	30 / 100	1000 ms	42096 KB

bomb

//#pragma GCC optomize ("Ofast")
//#pragma GCC optomize ("unroll-loops")
//#pragma GCC target ("avx,avx2,fma")
 
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define sz size
#define cl clear
#define ins insert
#define ers erase
#define pii pair < int , int >
#define pll pair< long long  , long long >
#define all(x) x.begin() , x.end()
#define ios ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define tostr(x) to_string(x)
#define tonum(s) atoi(s.c_str())
#define seon(x) setprecision(x)
#define bpop(x) __builtin_popcount(x)
#define deb(x) cerr << #x  << " = " << x << endl;
 
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
const double PI = 3.14159265;
 
const ll N = 2e3+5;
const ll mod = 1e9+7;
const ll inf = 1e9;
const ll INF = 1e18;
 
using namespace std;

char c[N][N];
int dp[N][N];
int n , m;

bool check(int x, int y){
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			if(c[i][j] == 0) continue;
			bool ok = 0;
			for(int i1 = max(1, i-x+1); i1 <= i; i1++){
				for(int j1 = max(1 , j-y+1); j1 <= j; j1++){
					int cnt = dp[min(i1+x-1 , n)][min(j1+y-1 , m)] - dp[i1-1][min(j1+y-1 , m)] - dp[min(i1+x-1 , n)][j1-1] + dp[i1-1][j1-1];
					if(cnt == x*y) ok = 1;
				}	
			}
			if(ok == 0) return 0;
		}
	}
	return 1;
}
void solve(){
	cin >> n >> m;
	for(int i = 1; i <= n; i++){
		for(int j = 1; j <= m; j++){
			cin >> c[i][j];
			c[i][j] -= '0';
			dp[i][j] = dp[i-1][j] + dp[i][j-1] - dp[i-1][j-1] + c[i][j];
		}
	}
	ll ans = 0;
	for(ll i = 1; i <= n; i++){
		for(ll j = 1; j <= m; j++){
			if(check(i,j)) ans = max(ans , i*j);
		}
	}
	cout << ans <<"\n";
}
signed main(){
	file("bomb");
	ios;
	solve();
	return 0;
}
/*
*/ 

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:17:48: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
      |                                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~
bomb.cpp:75:2: note: in expansion of macro 'file'
   75 |  file("bomb");
      |  ^~~~
bomb.cpp:17:77: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
      |                                                                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bomb.cpp:75:2: note: in expansion of macro 'file'
   75 |  file("bomb");
      |  ^~~~

Subtask #1

30.0 / 100.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	340 KB	Output is correct
2	Correct	0 ms	340 KB	Output is correct
3	Runtime error	29 ms	24700 KB	Execution killed with signal 11
4	Runtime error	30 ms	24708 KB	Execution killed with signal 11
5	Correct	1 ms	340 KB	Output is correct
6	Correct	7 ms	336 KB	Output is correct
7	Correct	0 ms	340 KB	Output is correct
8	Correct	1 ms	456 KB	Output is correct
9	Correct	1 ms	340 KB	Output is correct
10	Correct	1 ms	328 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	324 KB	Output is correct
13	Correct	1 ms	340 KB	Output is correct
14	Correct	1 ms	332 KB	Output is correct
15	Correct	1 ms	340 KB	Output is correct
16	Correct	1 ms	340 KB	Output is correct
17	Correct	2 ms	716 KB	Output is correct
18	Correct	1 ms	720 KB	Output is correct
19	Correct	11 ms	940 KB	Output is correct
20	Correct	13 ms	932 KB	Output is correct
21	Correct	1 ms	584 KB	Output is correct
22	Correct	2 ms	724 KB	Output is correct
23	Correct	128 ms	852 KB	Output is correct
24	Correct	14 ms	852 KB	Output is correct
25	Correct	287 ms	976 KB	Output is correct
26	Correct	512 ms	976 KB	Output is correct
27	Correct	25 ms	2388 KB	Output is correct
28	Correct	16 ms	2612 KB	Output is correct
29	Execution timed out	1079 ms	3156 KB	Time limit exceeded
30	Execution timed out	1085 ms	3796 KB	Time limit exceeded
31	Execution timed out	1083 ms	3028 KB	Time limit exceeded
32	Execution timed out	1086 ms	3476 KB	Time limit exceeded
33	Execution timed out	1086 ms	3924 KB	Time limit exceeded
34	Correct	26 ms	2772 KB	Output is correct
35	Execution timed out	1082 ms	3928 KB	Time limit exceeded
36	Execution timed out	1076 ms	3924 KB	Time limit exceeded
37	Correct	1 ms	340 KB	Output is correct
38	Runtime error	90 ms	41964 KB	Execution killed with signal 11
39	Correct	1 ms	340 KB	Output is correct
40	Execution timed out	1078 ms	9300 KB	Time limit exceeded
41	Correct	2 ms	340 KB	Output is correct
42	Execution timed out	1081 ms	852 KB	Time limit exceeded
43	Runtime error	97 ms	42000 KB	Execution killed with signal 11
44	Execution timed out	1078 ms	3924 KB	Time limit exceeded
45	Runtime error	91 ms	41988 KB	Execution killed with signal 11
46	Runtime error	89 ms	42072 KB	Execution killed with signal 11
47	Runtime error	97 ms	42020 KB	Execution killed with signal 11
48	Runtime error	101 ms	42036 KB	Execution killed with signal 11
49	Runtime error	95 ms	42024 KB	Execution killed with signal 11
50	Runtime error	93 ms	42060 KB	Execution killed with signal 11
51	Runtime error	91 ms	42060 KB	Execution killed with signal 11
52	Runtime error	92 ms	42060 KB	Execution killed with signal 11
53	Runtime error	97 ms	41920 KB	Execution killed with signal 11
54	Runtime error	97 ms	42008 KB	Execution killed with signal 11
55	Runtime error	91 ms	42048 KB	Execution killed with signal 11
56	Runtime error	86 ms	42096 KB	Execution killed with signal 11
57	Runtime error	86 ms	42096 KB	Execution killed with signal 11
58	Runtime error	87 ms	42072 KB	Execution killed with signal 11
59	Runtime error	98 ms	42060 KB	Execution killed with signal 11
60	Runtime error	90 ms	42028 KB	Execution killed with signal 11
61	Runtime error	85 ms	42080 KB	Execution killed with signal 11
62	Runtime error	85 ms	42032 KB	Execution killed with signal 11
63	Runtime error	104 ms	42056 KB	Execution killed with signal 11
64	Runtime error	85 ms	42084 KB	Execution killed with signal 11
65	Runtime error	85 ms	42060 KB	Execution killed with signal 11
66	Runtime error	85 ms	41976 KB	Execution killed with signal 11
67	Runtime error	91 ms	42016 KB	Execution killed with signal 11
68	Runtime error	89 ms	42064 KB	Execution killed with signal 11
69	Runtime error	99 ms	42060 KB	Execution killed with signal 11
70	Execution timed out	1080 ms	21664 KB	Time limit exceeded
71	Runtime error	86 ms	42000 KB	Execution killed with signal 11
72	Runtime error	84 ms	42004 KB	Execution killed with signal 11
73	Runtime error	86 ms	42060 KB	Execution killed with signal 11
74	Runtime error	86 ms	42060 KB	Execution killed with signal 11
75	Runtime error	86 ms	42024 KB	Execution killed with signal 11
76	Runtime error	83 ms	42076 KB	Execution killed with signal 11
77	Runtime error	86 ms	41808 KB	Execution killed with signal 11
78	Runtime error	90 ms	41720 KB	Execution killed with signal 11
79	Runtime error	94 ms	41836 KB	Execution killed with signal 11
80	Runtime error	88 ms	41708 KB	Execution killed with signal 11
81	Runtime error	85 ms	41568 KB	Execution killed with signal 11
82	Runtime error	89 ms	41516 KB	Execution killed with signal 11
83	Runtime error	85 ms	41420 KB	Execution killed with signal 11
84	Runtime error	84 ms	41440 KB	Execution killed with signal 11
85	Runtime error	85 ms	41428 KB	Execution killed with signal 11
86	Runtime error	84 ms	41096 KB	Execution killed with signal 11
87	Runtime error	86 ms	41000 KB	Execution killed with signal 11
88	Runtime error	89 ms	41132 KB	Execution killed with signal 11
89	Runtime error	87 ms	40908 KB	Execution killed with signal 11
90	Execution timed out	1082 ms	20440 KB	Time limit exceeded
91	Runtime error	87 ms	40780 KB	Execution killed with signal 11
92	Runtime error	85 ms	40812 KB	Execution killed with signal 11
93	Runtime error	91 ms	40704 KB	Execution killed with signal 11
94	Runtime error	85 ms	40652 KB	Execution killed with signal 11
95	Runtime error	83 ms	40668 KB	Execution killed with signal 11
96	Runtime error	84 ms	40696 KB	Execution killed with signal 11
97	Runtime error	87 ms	40408 KB	Execution killed with signal 11
98	Runtime error	90 ms	40308 KB	Execution killed with signal 11
99	Runtime error	83 ms	40260 KB	Execution killed with signal 11
100	Runtime error	85 ms	40268 KB	Execution killed with signal 11