oj.uz

Submission #425454

# Submission time Handle Problem Language Result Execution time Memory
425454 2021-06-13T04:00:46 Z errorgorn Collecting Mushrooms (NOI18_collectmushrooms) C++17
100 / 100
 25 ms 22028 KB 
#include <cstdio>
#include <vector>
#include <utility>
using namespace std;
typedef pair<int,int> ii;
int n,m,k,r,i,j,l,d;
vector<int> v[500005];
vector<ii> memo;
char c;
int sum(int i1,int i2, int j1,int j2){
	return (v[i2][j2]-v[i1][j2]-v[i2][j1]+v[i1][j1]);
}
int main(){
	scanf("%d%d%d%d",&n,&m,&r,&k);
	for(int x=0;x<=n;x++){
		v[x].push_back(0);
	}
	for (int x=0;x<m;x++){
		v[0].push_back(0);
	}
	for (int x=1;x<=n;x++){
		getchar();
		for (int y=1;y<=m;y++){
			c=getchar();
			i=v[x-1][y]+v[x][y-1]-v[x-1][y-1];
			if (c=='S') i++;
			else if(c=='M') memo.push_back(ii (x,y));
			v[x].push_back(i);
		}
	}
	/*for (int x=0;x<=n;x++){
		for (int y=0;y<=m;y++){
			printf("%d ",v[x][y]);
		}
		printf("\n");
	}*/
	l=memo.size();
	for (int x=0;x<l;x++){
		i=memo[x].first,j=memo[x].second;
		if (sum(max(0,i-r-1),min(n,i+r),max(0,j-r-1),min(m,j+r))>=k) d++;
	}
	printf("%d\n",d);
}

Compilation message

mushrooms.cpp: In function 'int main()':
mushrooms.cpp:14:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  scanf("%d%d%d%d",&n,&m,&r,&k);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 10 ms 12108 KB Output is correct
3 Correct 10 ms 12060 KB Output is correct
4 Correct 7 ms 11980 KB Output is correct
5 Correct 9 ms 11980 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 10 ms 12108 KB Output is correct
3 Correct 10 ms 12060 KB Output is correct
4 Correct 7 ms 11980 KB Output is correct
5 Correct 9 ms 11980 KB Output is correct
6 Correct 8 ms 11952 KB Output is correct
7 Correct 8 ms 12040 KB Output is correct
8 Correct 7 ms 12024 KB Output is correct
9 Correct 8 ms 11980 KB Output is correct
10 Correct 9 ms 12024 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12024 KB Output is correct
2 Correct 9 ms 11980 KB Output is correct
3 Correct 8 ms 12236 KB Output is correct
4 Correct 10 ms 11956 KB Output is correct
5 Correct 9 ms 12028 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 13004 KB Output is correct
2 Correct 10 ms 13128 KB Output is correct
3 Correct 10 ms 13260 KB Output is correct
4 Correct 12 ms 13004 KB Output is correct
5 Correct 13 ms 13136 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 19072 KB Output is correct
2 Correct 25 ms 22024 KB Output is correct
3 Correct 24 ms 21924 KB Output is correct
4 Correct 21 ms 19644 KB Output is correct
5 Correct 25 ms 22028 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11980 KB Output is correct
2 Correct 10 ms 12108 KB Output is correct
3 Correct 10 ms 12060 KB Output is correct
4 Correct 7 ms 11980 KB Output is correct
5 Correct 9 ms 11980 KB Output is correct
6 Correct 8 ms 11952 KB Output is correct
7 Correct 8 ms 12040 KB Output is correct
8 Correct 7 ms 12024 KB Output is correct
9 Correct 8 ms 11980 KB Output is correct
10 Correct 9 ms 12024 KB Output is correct
11 Correct 9 ms 12024 KB Output is correct
12 Correct 9 ms 11980 KB Output is correct
13 Correct 8 ms 12236 KB Output is correct
14 Correct 10 ms 11956 KB Output is correct
15 Correct 9 ms 12028 KB Output is correct
16 Correct 9 ms 13004 KB Output is correct
17 Correct 10 ms 13128 KB Output is correct
18 Correct 10 ms 13260 KB Output is correct
19 Correct 12 ms 13004 KB Output is correct
20 Correct 13 ms 13136 KB Output is correct
21 Correct 22 ms 19072 KB Output is correct
22 Correct 25 ms 22024 KB Output is correct
23 Correct 24 ms 21924 KB Output is correct
24 Correct 21 ms 19644 KB Output is correct
25 Correct 25 ms 22028 KB Output is correct
26 Correct 22 ms 16904 KB Output is correct
27 Correct 20 ms 17084 KB Output is correct
28 Correct 17 ms 15480 KB Output is correct
29 Correct 17 ms 15684 KB Output is correct
30 Correct 20 ms 16544 KB Output is correct