Submission #682292

#	Time	Username	Problem	Language	Result	Execution time	Memory
682292		armashka	Road Construction (JOI21_road_construction)	C++17	100 / 100	6923 ms	26940 KiB

road_construction

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

using namespace std;
using namespace __gnu_pbds;
 
template<class T> using ordered_multiset =tree<T, null_type, less_equal<T>, rb_tree_tag,tree_order_statistics_node_update> ;
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define file(s) freopen(s".in", "r", stdin);freopen(s".out", "w", stdout);
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define pb push_back
#define ft first
#define sd second
#define ll long long
#define pll pair<ll,ll>
const int N = 1e6 + 5;
const int M = 1e7 + 5;
const ll mod = 998244353;
const ll inf = 1e18;

ll binmul(ll x, ll ti) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll binpow(ll x, ll ti) { ll res = 1;while (ti){if(ti & 1)res=binmul(res,x);x=binmul(x,x);ti >>= 1; x %= mod; res %= mod;} return res;}
ll nok(ll a, ll b) { return (a*b)/__gcd(abs(a),abs(b)) * (a*b > 0 ? 1 : -1); }
bool odd(ll n) { return (n % 2 == 1); }
bool even(ll n) { return (n % 2 == 0); }

ll n, k, x[N], y[N];
pll a[N];

const void solve() {
	cin >> n >> k;
	bool ok = 1;
	for (int i = 1; i <= n; ++ i) cin >> x[i] >> y[i], ok &= (y[i] == 0), a[i] = {x[i], y[i]};

	if (n <= 1000) {
	    vector <ll> v;
	    for (int i = 1; i < n; ++ i) {
	    	for (int j = i + 1; j <= n; ++ j) v.pb(abs(x[i] - x[j]) + abs(y[i] - y[j]));
	    }
	    sort(all(v));            
	    for (int i = 0; i < k; ++ i) cout << v[i] << "\n";
		return;
	}
    
		multiset<ll>st;
		sort(a + 1, a + n + 1);
		for (int i = 1; i <= n; ++ i) x[i] = a[i].ft, y[i] = a[i].sd;
		for (ll i = 1; i < n; ++ i) {
			for (int j = i + 1; j <= min(n, i + 5000); ++ j) {
				if (st.size() < k) st.insert(abs(x[i] - x[j]) + abs(y[i] - y[j]));
				else if (*st.rbegin() > abs(x[i] - x[j]) + abs(y[i] - y[j])) {
					st.erase(--st.end());
					st.insert(abs(x[i] - x[j]) + abs(y[i] - y[j]));
				}
			}	
		}            
		for (auto x : st) cout << x << "\n";
		return;



}

int main() {
   	ios_base::sync_with_stdio(0);
	cin.tie(0); cout.tie(0);
	srand(time(NULL));

	ll tt = 1;
	//cin >> tt; 

	while (tt --) solve();

	return 0;
}

Compilation message (stderr)

road_construction.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    5 | #pragma GCC optimization("O3")
      | 
road_construction.cpp:6: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    6 | #pragma GCC optimization("unroll-loops")
      | 
road_construction.cpp:7: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    7 | #pragma comment(linker, "/stack:200000000")
      | 
road_construction.cpp: In function 'const void solve()':
road_construction.cpp:58:19: warning: comparison of integer expressions of different signedness: 'std::multiset<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   58 |     if (st.size() < k) st.insert(abs(x[i] - x[j]) + abs(y[i] - y[j]));
      |         ~~~~~~~~~~^~~

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