Submission #921521

#	Time	Username	Problem	Language	Result	Execution time	Memory
921521		vjudge1	Collecting Mushrooms (NOI18_collectmushrooms)	C++17	60 / 100	2041 ms	5336 KiB

mushrooms

#include <bits/stdc++.h>
#define F first 
#define S second
#define ent '\n'
#define int long long
#define pb push_back

typedef long double ld;
typedef long long ll;
using namespace std;

const int maxn = 1e6+12;
const int T = 0;
const int mod = 1e9+7;

int n,m,k,x,y,l,r;
int b[maxn],p[maxn],pref[maxn],fact[maxn];
char a[2222][2222];

void solve(){
	cin>>n>>m>>k>>x;
	int ans=0;
	vector<pair<int,int>>v;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			cin>>a[i][j];
			if(a[i][j]=='S'){
				v.pb({i,j});
			}	
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(a[i][j]=='M'){
				int cal=0;
				for(int u=0;u<v.size();u++){
					if(max(abs(i-v[u].F) , abs(j-v[u].S)) <= k)cal++;
				}
				if(cal>=x)ans++;
			}
		}
	}
	cout<<ans;
}	
//BEKSULTAN TOP
signed main(){	
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int t=1;
	if(T)cin>>t;
	while(t--)solve();
} 

Compilation message (stderr)

mushrooms.cpp: In function 'void solve()':
mushrooms.cpp:36:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     for(int u=0;u<v.size();u++){
      |                 ~^~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 18 / 18
• Subtask 4: 23 / 23
• Subtask 5: 0 / 19
• Subtask 6: 0 / 21