oj.uz

Submission #334226

# Submission time Handle Problem Language Result Execution time Memory
334226 2020-12-08T17:03:28 Z juggernaut Bomb (IZhO17_bomb) C++14
52 / 100
 617 ms 56172 KB 
#include "bits/stdc++.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;
 
typedef long long ll;
typedef pair<int,int> PII;
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=2509;
char arr[N][N];
int up[N][N],down[N][N],ans[N];
int main(){
    //~ freopen("file.in", "r", stdin);
	int n,m;
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;i++)
		for(int j=1;j<=m;j++)
			scanf(" %c",&arr[i][j]);
	int xx=n,yy=m;		
	for(int i=1;i<=n;i++){
		int cnt=0;
		for(int j=1;j<=m;j++){
			if(arr[i][j]=='1')
				cnt++;
			else{
				if(cnt)
					umin(yy,cnt);
				cnt=0;
			}
		}
		if(cnt)
			umin(yy,cnt);
	}
	for(int j=1;j<=m;j++){
		int cnt=0;
		for(int i=1;i<=n;i++){
			if(arr[i][j]=='1')
				up[i][j]=up[i-1][j]+1,cnt++;
			else{
				if(cnt)
					umin(xx,cnt);
				cnt=0;	
			}	
		}
		if(cnt)
			umin(xx,cnt);
		for(int i=n;i>=1;i--)
			if(arr[i][j]=='1')
				down[i][j]=down[i+1][j]+1;	
	}
	for(int i=1;i<=yy;i++)	
		ans[i]=xx;	
	for(int i=1;i<=n;i++){
		int cnt=0;
		int a=INF,b=INF;
		for(int j=1;j<=m;j++){
			if(arr[i][j]=='1'){
				umin(a,up[i][j]);
				umin(b,down[i][j]);
				umin(ans[++cnt],a+b-1);
			}
			else
				cnt=0,a=b=INF;
		}
	}	
	int res=ans[1];
	for(int i=2;i<=yy;i++){
		umin(ans[i],ans[i-1]);
		umax(res,i*ans[i]);
	}printf("%d\n",res);
	return 0;
}

Compilation message

bomb.cpp: In function 'int main()':
bomb.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   26 |  scanf("%d%d",&n,&m);
      |  ~~~~~^~~~~~~~~~~~~~
bomb.cpp:29:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   29 |    scanf(" %c",&arr[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
52.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 13 ms 26476 KB Output is correct
4 Correct 14 ms 26476 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Incorrect 1 ms 492 KB Output isn't correct
9 Incorrect 1 ms 492 KB Output isn't correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Incorrect 1 ms 492 KB Output isn't correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 1 ms 492 KB Output is correct
15 Incorrect 1 ms 628 KB Output isn't correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 1004 KB Output is correct
18 Correct 1 ms 748 KB Output is correct
19 Incorrect 1 ms 1004 KB Output isn't correct
20 Incorrect 1 ms 1004 KB Output isn't correct
21 Correct 1 ms 620 KB Output is correct
22 Correct 1 ms 876 KB Output is correct
23 Incorrect 3 ms 1132 KB Output isn't correct
24 Incorrect 2 ms 1004 KB Output isn't correct
25 Incorrect 2 ms 1536 KB Output isn't correct
26 Correct 2 ms 1516 KB Output is correct
27 Correct 8 ms 4076 KB Output is correct
28 Incorrect 9 ms 1516 KB Output isn't correct
29 Incorrect 12 ms 5248 KB Output isn't correct
30 Incorrect 15 ms 4332 KB Output isn't correct
31 Correct 12 ms 3200 KB Output is correct
32 Incorrect 15 ms 4204 KB Output isn't correct
33 Incorrect 16 ms 5356 KB Output isn't correct
34 Incorrect 7 ms 1772 KB Output isn't correct
35 Incorrect 14 ms 2060 KB Output isn't correct
36 Correct 19 ms 6784 KB Output is correct
37 Incorrect 1 ms 492 KB Output isn't correct
38 Correct 617 ms 56172 KB Output is correct
39 Incorrect 1 ms 492 KB Output isn't correct
40 Correct 75 ms 15596 KB Output is correct
41 Correct 1 ms 492 KB Output is correct
42 Correct 2 ms 1516 KB Output is correct
43 Correct 570 ms 51692 KB Output is correct
44 Correct 18 ms 6124 KB Output is correct
45 Incorrect 582 ms 53192 KB Output isn't correct
46 Correct 558 ms 55660 KB Output is correct
47 Incorrect 554 ms 53164 KB Output isn't correct
48 Correct 540 ms 55660 KB Output is correct
49 Correct 608 ms 55808 KB Output is correct
50 Correct 563 ms 55788 KB Output is correct
51 Correct 542 ms 55756 KB Output is correct
52 Correct 531 ms 55660 KB Output is correct
53 Correct 528 ms 55020 KB Output is correct
54 Correct 491 ms 42348 KB Output is correct
55 Incorrect 490 ms 40556 KB Output isn't correct
56 Correct 600 ms 55936 KB Output is correct
57 Incorrect 482 ms 35692 KB Output isn't correct
58 Correct 479 ms 40684 KB Output is correct
59 Correct 496 ms 37608 KB Output is correct
60 Correct 519 ms 47468 KB Output is correct
61 Correct 587 ms 55660 KB Output is correct
62 Correct 587 ms 55788 KB Output is correct
63 Correct 604 ms 55660 KB Output is correct
64 Correct 480 ms 38764 KB Output is correct
65 Correct 517 ms 54636 KB Output is correct
66 Correct 525 ms 51472 KB Output is correct
67 Correct 547 ms 55788 KB Output is correct
68 Correct 554 ms 55916 KB Output is correct
69 Correct 475 ms 35232 KB Output is correct
70 Incorrect 285 ms 15340 KB Output isn't correct
71 Incorrect 468 ms 28396 KB Output isn't correct
72 Incorrect 472 ms 33772 KB Output isn't correct
73 Correct 491 ms 34284 KB Output is correct
74 Incorrect 480 ms 35692 KB Output isn't correct
75 Incorrect 484 ms 37356 KB Output isn't correct
76 Incorrect 475 ms 38764 KB Output isn't correct
77 Incorrect 521 ms 39384 KB Output isn't correct
78 Incorrect 489 ms 39404 KB Output isn't correct
79 Incorrect 416 ms 11884 KB Output isn't correct
80 Incorrect 430 ms 13292 KB Output isn't correct
81 Incorrect 425 ms 13548 KB Output isn't correct
82 Incorrect 490 ms 41876 KB Output isn't correct
83 Incorrect 491 ms 42092 KB Output isn't correct
84 Incorrect 419 ms 7324 KB Output isn't correct
85 Incorrect 494 ms 40948 KB Output isn't correct
86 Incorrect 575 ms 54680 KB Output isn't correct
87 Incorrect 488 ms 39916 KB Output isn't correct
88 Correct 486 ms 40972 KB Output is correct
89 Correct 516 ms 49644 KB Output is correct
90 Incorrect 311 ms 29548 KB Output isn't correct
91 Incorrect 494 ms 44652 KB Output isn't correct
92 Incorrect 506 ms 46444 KB Output isn't correct
93 Incorrect 568 ms 53800 KB Output isn't correct
94 Correct 508 ms 48256 KB Output is correct
95 Incorrect 488 ms 42140 KB Output isn't correct
96 Correct 490 ms 41836 KB Output is correct
97 Incorrect 562 ms 54380 KB Output isn't correct
98 Incorrect 481 ms 41580 KB Output isn't correct
99 Incorrect 511 ms 47852 KB Output isn't correct
100 Incorrect 565 ms 53228 KB Output isn't correct