제출 #474140

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
474140		LeeRise	Odašiljači (COCI20_odasiljaci)	C++14	70 / 70	121 ms	12728 KiB

odasiljaci

# include <bits/stdc++.h>
# define auto_ac int main
using namespace std;
struct HA{
    long long d,a,b;
};
struct point
{
    long long x,y;
};
int n;
int root[100005];
vector<HA>v;
point p[10005];
long long abs(point a, point b)
{
    return ((a.x-b.x)*(a.x-b.x)+(a.y-b.y)*(a.y-b.y));
}
int find_root(int x)
{
    if (root[x]==x) return x;
    return root[x]=find_root(root[x]);
}
bool cmp(HA a, HA b)
{
    return a.d<b.d;
}
auto_ac()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for (int i=1;i<=n;i++){
        root[i]=i;
        cin>>p[i].x>>p[i].y;
        for (int j=1;j<i;j++){
                v.push_back({abs(p[j],p[i]),j,i});
        }
    }
    sort (v.begin(),v.end(),cmp);
    long long ans;
    for (int i=0;i<v.size();i++){
        if (find_root(v[i].a)!=find_root(v[i].b)){
            ans=v[i].d;
            root[find_root(v[i].b)]=root[find_root(v[i].a)];
        }
    }
    cout<<fixed<<setprecision(7)<<sqrt(ans)/2;
}

컴파일 시 표준 에러 (stderr) 메시지

odasiljaci.cpp: In function 'int main()':
odasiljaci.cpp:43:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<HA>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     for (int i=0;i<v.size();i++){
      |                  ~^~~~~~~~~

• Subtask 1: 70 / 70