제출 #413636

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
413636		Ronin13	Road Construction (JOI21_road_construction)	C++14	5 / 100	10090 ms	351332 KiB

road_construction

#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define ull unsigned ll
#define pb push_back
#define epb emplace_back
using namespace std;

struct Point{
    ll x,y;
    Point(ll x,ll y):x(x),y(y){}
    Point(){
    }
};

ll dist(Point A,Point B){
    return abs(A.x-B.x)+abs(A.y-B.y);
}

bool check(vector<Point>a){
    for(Point A:a){
        if(A.y!=0)return false;
    }
    return true;
}
bool comp(Point A,Point B){
    if(A.x==B.x)return A.y<B.y;
    return A.x<B.x;
}
void solve(){
    int n;cin>>n;
    int k;cin>>k;
    vector<Point>a(n);
    for(int i=0;i<n;i++)cin>>a[i].x>>a[i].y;
    sort(a.begin(),a.end(),comp);
    if(check(a)){
        vector<ll>vec;
        for(int i=0;i<n;i++)vec.pb(a[i].x);
        int l=0,r=1e15;
        while(l+1<r){
            ll mid=(l+r)/2;
            ll ans=0;
            for(int i=0;i<vec.size();i++){
                int x=upper_bound(vec.begin(),vec.end(),vec[i]+mid)-vec.begin();
                ans+=x-i-1;
                if(ans>=k)break;
            }
            if(ans>=k)r=mid;
            else l=mid;
        }
        multiset<ll>d;
        for(int i=0;i<n;i++){
            for(int j=i+1;j<n&&vec[j]<=vec[i]+r;j++)d.insert(dist(a[j],a[i]));
        }
        int ind=0;
        for(ll to:d){
            if(ind>=k)break;
            cout<<to<<"\n";
            ind++;
        }
        return;
    }
    multiset<ll>d;
    for(int i=0;i<n;i++){
        for(int j=0;j<i;j++){
            d.insert(dist(a[i],a[j]));
        }
    }
    int ind=0;
    for(ll to:d){
            if(ind>=k)break;
            cout<<to<<"\n";
            ind++;
    }
}

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    solve();
}

컴파일 시 표준 에러 (stderr) 메시지

road_construction.cpp: In function 'void solve()':
road_construction.cpp:42:19: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+15' to '2147483647' [-Woverflow]
   42 |         int l=0,r=1e15;
      |                   ^~~~
road_construction.cpp:46:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |             for(int i=0;i<vec.size();i++){
      |                         ~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 6
• Subtask 3: 0 / 7
• Subtask 4: 0 / 20
• Subtask 5: 0 / 27
• Subtask 6: 0 / 35