oj.uz

Submission #167414

# Submission time Handle Problem Language Result Execution time Memory
167414 2019-12-08T10:14:56 Z GioChkhaidze Bomb (IZhO17_bomb) C++14
39 / 100
 1000 ms 131076 KB 
#include <bits/stdc++.h>
#define Tree int h,int l,int r
#define Left 2*h,l,(l+r)/2
#define Right 2*h+1,(l+r)/2+1,r
#define F first
#define S second
using namespace std;
const int N=2505;
int n,m,width=1e9,length=1e9,last,D[N][N];
bool f[N][N];
string s[N],S;
vector < pair < int , pair < int , int > > > v;
inline bool check(int x,int y) {
	for (int i=0; i<n; i++) 
		for (int j=0; j<m; j++)
			if (s[i][j]=='1') f[i][j]=1;
					     else f[i][j]=0;
						 								     
	for (int i=0; i<n; i++)
		for (int j=0; j<m; j++) 
			if (s[i][j]=='1')
				if (i+x-1<n && j+y-1<m) {
					if (D[i+x][j+y]-D[i][j+y]-D[i+x][j]+D[i][j]!=0 && !f[i][j]) continue;
					if (D[i+x][j+y]-D[i][j+y]-D[i+x][j]+D[i][j]!=0) return 0;
					for (int k1=i; k1<i+x; k1++)
						for (int k2=j; k2<j+y; k2++)
							f[k1][k2]=0;
				}
	
	return 1;
}

main () {
	scanf("%d%d",&n,&m);
	getline(cin,S);
	for (int i=0; i<n; i++)  
		getline(cin,s[i]);
	
	for (int i=0; i<n; i++)
		for (int j=0; j<m; j++) 
			D[i+1][j+1]=D[i][j+1]+D[i+1][j]-D[i][j]+(s[i][j]=='0');
	
	for (int i=0; i<n; i++) {
		last=m;
		for (int j=m-1; j>=0; j--) {
			if (s[i][j]=='0' && last-1!=j) 
				if (width>last-j-1) width=last-j-1;
			if (s[i][j]=='0') last=j;
		}
		
		if (last) 
			if (last<width) width=last;
	}
	
	for (int j=0; j<m; j++) {
		last=n;
		for (int i=n-1; i>=0; i--) {
			if (s[i][j]=='0' && last-1!=i) 
				if (length>last-i-1) length=last-i-1;
			if (s[i][j]=='0') last=i;
		}
		
		if (last)
			if (last<length) length=last;
	}
	
	if (width==1e9 || length==1e9) { cout<<0<<endl; return 0; }

	for (int i=1; i<=length; i++)
		for (int j=1; j<=width; j++)
			v.push_back({i*j,{i,j}});
			
	sort(v.begin(),v.end());
	
	for (int i=v.size()-1; i>=0; i--) {
		if (check(v[i].S.F,v[i].S.S)) {
			cout<<v[i].F<<endl;
			return 0;
		}
	}
}

Compilation message

bomb.cpp:33:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main () {
       ^
bomb.cpp: In function 'int main()':
bomb.cpp:34:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~

Subtask #1
39.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 20 ms 16632 KB Output is correct
4 Correct 22 ms 16632 KB Output is correct
5 Correct 21 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 3 ms 888 KB Output is correct
18 Correct 3 ms 888 KB Output is correct
19 Correct 6 ms 1016 KB Output is correct
20 Correct 6 ms 1016 KB Output is correct
21 Correct 3 ms 760 KB Output is correct
22 Correct 3 ms 1016 KB Output is correct
23 Correct 9 ms 1156 KB Output is correct
24 Correct 6 ms 1016 KB Output is correct
25 Correct 44 ms 1144 KB Output is correct
26 Correct 5 ms 1144 KB Output is correct
27 Correct 10 ms 2808 KB Output is correct
28 Correct 13 ms 2936 KB Output is correct
29 Incorrect 171 ms 3960 KB Output isn't correct
30 Execution timed out 1076 ms 4664 KB Time limit exceeded
31 Execution timed out 1084 ms 3768 KB Time limit exceeded
32 Execution timed out 1072 ms 4180 KB Time limit exceeded
33 Execution timed out 1085 ms 4852 KB Time limit exceeded
34 Correct 12 ms 3192 KB Output is correct
35 Correct 851 ms 4564 KB Output is correct
36 Correct 133 ms 4728 KB Output is correct
37 Correct 2 ms 504 KB Output is correct
38 Runtime error 611 ms 131076 KB Execution killed with signal 9 (could be triggered by violating memory limits)
39 Correct 3 ms 504 KB Output is correct
40 Execution timed out 1065 ms 12388 KB Time limit exceeded
41 Correct 2 ms 504 KB Output is correct
42 Correct 203 ms 1348 KB Output is correct
43 Execution timed out 1087 ms 49760 KB Time limit exceeded
44 Execution timed out 1076 ms 5228 KB Time limit exceeded
45 Execution timed out 1071 ms 64712 KB Time limit exceeded
46 Correct 468 ms 46712 KB Output is correct
47 Execution timed out 1064 ms 65396 KB Time limit exceeded
48 Execution timed out 1087 ms 46692 KB Time limit exceeded
49 Correct 595 ms 46712 KB Output is correct
50 Execution timed out 1083 ms 46916 KB Time limit exceeded
51 Execution timed out 1072 ms 46764 KB Time limit exceeded
52 Execution timed out 1077 ms 46712 KB Time limit exceeded
53 Execution timed out 1080 ms 46700 KB Time limit exceeded
54 Execution timed out 1083 ms 46936 KB Time limit exceeded
55 Execution timed out 1067 ms 46712 KB Time limit exceeded
56 Correct 501 ms 48192 KB Output is correct
57 Execution timed out 1077 ms 46784 KB Time limit exceeded
58 Execution timed out 1077 ms 46988 KB Time limit exceeded
59 Execution timed out 1082 ms 46840 KB Time limit exceeded
60 Execution timed out 1071 ms 46716 KB Time limit exceeded
61 Execution timed out 1080 ms 46832 KB Time limit exceeded
62 Execution timed out 1083 ms 48108 KB Time limit exceeded
63 Execution timed out 1082 ms 65480 KB Time limit exceeded
64 Correct 741 ms 47440 KB Output is correct
65 Execution timed out 1080 ms 46712 KB Time limit exceeded
66 Execution timed out 1084 ms 47040 KB Time limit exceeded
67 Execution timed out 1081 ms 46904 KB Time limit exceeded
68 Execution timed out 1079 ms 47048 KB Time limit exceeded
69 Execution timed out 1076 ms 46724 KB Time limit exceeded
70 Execution timed out 1086 ms 38120 KB Time limit exceeded
71 Execution timed out 1069 ms 50876 KB Time limit exceeded
72 Execution timed out 1080 ms 53196 KB Time limit exceeded
73 Execution timed out 1063 ms 53632 KB Time limit exceeded
74 Execution timed out 1071 ms 53160 KB Time limit exceeded
75 Execution timed out 1083 ms 53576 KB Time limit exceeded
76 Execution timed out 1076 ms 54088 KB Time limit exceeded
77 Execution timed out 1064 ms 54428 KB Time limit exceeded
78 Execution timed out 1082 ms 54172 KB Time limit exceeded
79 Execution timed out 1065 ms 46736 KB Time limit exceeded
80 Execution timed out 1067 ms 46736 KB Time limit exceeded
81 Execution timed out 1084 ms 47432 KB Time limit exceeded
82 Execution timed out 1084 ms 54932 KB Time limit exceeded
83 Execution timed out 1090 ms 54856 KB Time limit exceeded
84 Execution timed out 1057 ms 46840 KB Time limit exceeded
85 Execution timed out 1076 ms 49624 KB Time limit exceeded
86 Execution timed out 1075 ms 46800 KB Time limit exceeded
87 Execution timed out 1085 ms 49380 KB Time limit exceeded
88 Execution timed out 1086 ms 54872 KB Time limit exceeded
89 Execution timed out 1079 ms 47980 KB Time limit exceeded
90 Execution timed out 1088 ms 39020 KB Time limit exceeded
91 Execution timed out 1073 ms 49056 KB Time limit exceeded
92 Execution timed out 1058 ms 48420 KB Time limit exceeded
93 Execution timed out 1092 ms 46712 KB Time limit exceeded
94 Execution timed out 1086 ms 47876 KB Time limit exceeded
95 Execution timed out 1091 ms 54856 KB Time limit exceeded
96 Execution timed out 1068 ms 54872 KB Time limit exceeded
97 Execution timed out 1087 ms 46792 KB Time limit exceeded
98 Execution timed out 1087 ms 54924 KB Time limit exceeded
99 Execution timed out 1082 ms 47848 KB Time limit exceeded
100 Execution timed out 1080 ms 46784 KB Time limit exceeded