Submission #921549

#	Time	Username	Problem	Language	Result	Execution time	Memory
921549		vjudge1	Collecting Mushrooms (NOI18_collectmushrooms)	C++17	18 / 100	2073 ms	7620 KiB

mushrooms

#include <bits/stdc++.h>
#define ll long long
#define pb push_back
using namespace std;

void solve(){
    ll a,b,d,k;
    cin>>a>>b>>d>>k;
    char c[a+1][b+1];
    vector<pair<ll,ll> >v,l;
    for(ll i=1;i<=a;i++){
        for(ll j=1;j<=b;j++){
            cin>>c[i][j];
            if(c[i][j]=='S'){
                v.pb({i,j});
            }
            else if(c[i][j]=='M'){
                l.pb({i,j});
            }
        }
    }
    ll ans,count=0;
    for(ll i=0;i<l.size();i++){
        ans=0;
        for(ll j=0;j<v.size();j++){
            ll res=0;
            res=sqrt((v[j].first-l[i].first)*(v[j].first-l[i].first)+(v[j].second-l[i].second)*(v[j].second-l[i].second));
            if(res<=d){
                ans++;
                if(ans==k){
                    count+=1;
                    break;
                }
            }
        }
        ans=0;
    }
    cout<<count;
}

int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    ll t=1,i=1;
    //cin>>t;
    while(t--){
        //cout<<"Case ";
        //cout<<i<<':'<<"\n";
        //i++;
        solve();
    }
    return 0;
}

Compilation message (stderr)

mushrooms.cpp: In function 'void solve()':
mushrooms.cpp:23:17: 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]
   23 |     for(ll i=0;i<l.size();i++){
      |                ~^~~~~~~~~
mushrooms.cpp:25:21: 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]
   25 |         for(ll j=0;j<v.size();j++){
      |                    ~^~~~~~~~~
mushrooms.cpp: In function 'int main()':
mushrooms.cpp:44:12: warning: unused variable 'i' [-Wunused-variable]
   44 |     ll t=1,i=1;
      |            ^

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