Submission #992354

#	Time	Username	Problem	Language	Result	Execution time	Memory
992354		Brinyon	Road Construction (JOI21_road_construction)	C++14	100 / 100	824 ms	15428 KiB

road_construction

#include<bits/stdc++.h>
#define MAXN 250001
using namespace std;
struct point{
    long long x,y;
};
long long dist(point a,point b){
    return abs(a.x-b.x)+abs(a.y-b.y);
}
long long n,k;
point a[MAXN];
bool cmp(point a,point b){
    if(a.x==b.x) return a.y<b.y;
    return a.x<b.x;
}
priority_queue<long long> pq;
int main(){
    cin>>n>>k;
    for(long long i=0;i<n;i++){
        long long x,y;
        cin>>a[i].x>>a[i].y;
    }
    sort(a,a+n,cmp);
    for(long long i=0;i<n;i++){
        for(long long i1=i-1;i1>=max(i-1000,(long long)0);i1--){
            long long dst=dist(a[i],a[i1]);
            if(pq.size()<k) pq.push(dst);
            else if(dst<pq.top()){
                pq.push(dst);
                pq.pop();
            }
        }
    }
    vector<long long> v;
    while(!pq.empty()){
        v.push_back(pq.top());
        pq.pop();
    }
    for(long long i=v.size()-1;i>=0;i--){
        cout<<v[i]<<"\n";
    }
    return 0;
}

Compilation message (stderr)

road_construction.cpp: In function 'int main()':
road_construction.cpp:20:19: warning: unused variable 'x' [-Wunused-variable]
   20 |         long long x,y;
      |                   ^
road_construction.cpp:20:21: warning: unused variable 'y' [-Wunused-variable]
   20 |         long long x,y;
      |                     ^
road_construction.cpp:27:25: warning: comparison of integer expressions of different signedness: 'std::priority_queue<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   27 |             if(pq.size()<k) pq.push(dst);
      |                ~~~~~~~~~^~

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