oj.uz

Submission #95077

# Submission time Handle Problem Language Result Execution time Memory
95077 2019-01-27T07:48:16 Z ae04071 Collecting Mushrooms (NOI18_collectmushrooms) C++11
100 / 100
 32 ms 23244 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
using pii=pair<int,int>;

int n,m,k,d;
char str[500010];
vector<int> arr[500010];
vector<pii> ms;

inline int gy(int y){return min(max(1,y),n);}
inline int gx(int x){return min(max(1,x),m);}

int main() {
	scanf("%d%d%d%d",&n,&m,&d,&k);
	for(int i=0;i<=n+1;i++) arr[i].resize(m+2,0);
	for(int i=1;i<=n;i++) {
		scanf("%s",str+1);
		for(int j=1;j<=m;j++) {
			if(str[j]=='M') ms.push_back({i,j});
			else if(str[j]=='S') {
				arr[gy(i-d)][gx(j-d)]+=1;
				arr[gy(i+d)+1][gx(j-d)]-=1;
				arr[gy(i-d)][gx(j+d)+1]-=1;
				arr[gy(i+d)+1][gx(j+d)+1]+=1;
			}
		}
	}

	for(int i=1;i<=n;i++) for(int j=1;j<=m;j++) {
		arr[i][j] += arr[i-1][j] + arr[i][j-1] - arr[i-1][j-1];
	}

	int ans=0;
	for(auto &v:ms) if(arr[v.fi][v.se] >= k) ans++;
	printf("%d\n",ans);
	
	return 0;
}

Compilation message

mushrooms.cpp: In function 'int main()':
mushrooms.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d",&n,&m,&d,&k);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
mushrooms.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",str+1);
   ~~~~~^~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12024 KB Output is correct
2 Correct 12 ms 12156 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 10 ms 12024 KB Output is correct
5 Correct 12 ms 12024 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12024 KB Output is correct
2 Correct 12 ms 12156 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 10 ms 12024 KB Output is correct
5 Correct 12 ms 12024 KB Output is correct
6 Correct 12 ms 12024 KB Output is correct
7 Correct 12 ms 12024 KB Output is correct
8 Correct 12 ms 12152 KB Output is correct
9 Correct 12 ms 12072 KB Output is correct
10 Correct 12 ms 12024 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12024 KB Output is correct
2 Correct 12 ms 12024 KB Output is correct
3 Correct 13 ms 12280 KB Output is correct
4 Correct 12 ms 12152 KB Output is correct
5 Correct 12 ms 12152 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 13048 KB Output is correct
2 Correct 14 ms 13048 KB Output is correct
3 Correct 15 ms 13304 KB Output is correct
4 Correct 14 ms 13048 KB Output is correct
5 Correct 14 ms 13136 KB Output is correct

Subtask #5
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 21100 KB Output is correct
2 Correct 32 ms 23144 KB Output is correct
3 Correct 29 ms 23244 KB Output is correct
4 Correct 30 ms 21152 KB Output is correct
5 Correct 29 ms 23108 KB Output is correct

Subtask #6
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12024 KB Output is correct
2 Correct 12 ms 12156 KB Output is correct
3 Correct 13 ms 12152 KB Output is correct
4 Correct 10 ms 12024 KB Output is correct
5 Correct 12 ms 12024 KB Output is correct
6 Correct 12 ms 12024 KB Output is correct
7 Correct 12 ms 12024 KB Output is correct
8 Correct 12 ms 12152 KB Output is correct
9 Correct 12 ms 12072 KB Output is correct
10 Correct 12 ms 12024 KB Output is correct
11 Correct 12 ms 12024 KB Output is correct
12 Correct 12 ms 12024 KB Output is correct
13 Correct 13 ms 12280 KB Output is correct
14 Correct 12 ms 12152 KB Output is correct
15 Correct 12 ms 12152 KB Output is correct
16 Correct 14 ms 13048 KB Output is correct
17 Correct 14 ms 13048 KB Output is correct
18 Correct 15 ms 13304 KB Output is correct
19 Correct 14 ms 13048 KB Output is correct
20 Correct 14 ms 13136 KB Output is correct
21 Correct 26 ms 21100 KB Output is correct
22 Correct 32 ms 23144 KB Output is correct
23 Correct 29 ms 23244 KB Output is correct
24 Correct 30 ms 21152 KB Output is correct
25 Correct 29 ms 23108 KB Output is correct
26 Correct 26 ms 15892 KB Output is correct
27 Correct 21 ms 16624 KB Output is correct
28 Correct 22 ms 15604 KB Output is correct
29 Correct 19 ms 15732 KB Output is correct
30 Correct 25 ms 16928 KB Output is correct