Submission #893438

#	Time	Username	Problem	Language	Result	Execution time	Memory
893438		vjudge1	Road Construction (JOI21_road_construction)	C++17	11 / 100	368 ms	25516 KiB

road_construction

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define ff first
#define ss second
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long
///*                                                    __                    __                        __                    */
///*        ======     _      /| /|  __   _            /   |  |   /|  |   @  |    |  |  | /   /| |\  | /   |  |  @ | /        */
///* \-       ||  |_| |_     / |/ | |  | |_  |-        |   |--|  /-|  |   |  \ \  |==|  |-   /=| | \ | |   |--|  | |-         */
///*          ||  | | |_    /     | |__|  _| |_        \__ |  | /  |  |__ |  __|  |  |  | \ /  | |  \| \__ |  |  | | \        */
///*  
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef vector<pii> vii;
void solve(){
	int n, k;
	cin >> n >> k;
	if(n*n < 1e9){
		vii v(n);
		vi ans;
		for(auto &[i,j]:v)cin >> i >> j;
		for(int i = 0; i < n; i++){
			for(int j = i+1; j < n; j++){
				ans.pb(abs(v[i].ff-v[j].ff)+abs(v[i].ss-v[j].ss));
			}
		}sort(all(ans));
		for(int i = 0; i < k; i++)cout << ans[i] << '\n';
	}else if(k == 1){
		
	}else{
		vii v(n);
		for(auto &[i, j]:v)cin >> i >> j;
		sort(all(v));
		multiset<pii> st;
		vi df, ans;
		for(int i = 0; i < n-1; i++){
			df.pb(abs(v[i].ff-v[i+1].ff)+abs(v[i].ss-v[i+1].ss));
		}
		for(int i = 0; i < n-1; i++){
			st.insert({df[i], i+1});
		}
		while((int)ans.size() < k){
			auto [cost, i] = *st.begin();
			st.erase(*st.begin());
			ans.pb(cost);
			if(i < n-1){
				st.insert({cost+df[i], i+1});
			}
		}
		sort(all(ans));
		for(int i = 0; i < k; i++){
			cout << ans[i] << '\n';
		}
	}
}
main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	int test = 1;
	//~ cin >> test;
	while(test--){
		solve();
	}
}

Compilation message (stderr)

road_construction.cpp:58:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   58 | main(){
      | ^~~~

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