Submission #702068

#	Time	Username	Problem	Language	Result	Execution time	Memory
702068		Sanzhar23	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	1 ms	212 KiB

bridge

#include <bits/stdc++.h>

using namespace std;

#define ll long long	
#define pb push_back
#define bug cout << "bug" << endl
#define speed ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define all(x) x.begin(), x.end()
#define F first
#define S second
#define pll pair <ll, ll> 
#define pii pair <int, int> 
#define triple pair <pair <ll, ll> , ll>   
#define ull unsigned long long
#define ld long double
#define pinode pair <node*, node*>

const ll INF = 9e18 + 5;
const ll inf = 1e9 + 5;
const ll N = 2e3 + 5;
const ll shift = 2e6;
const ll mod = 998244353;
const ll mod2 = 1e9 + 9;
const ll M = 1e3 + 5;
const ll LOG = 21;
const ll sp = 263;
const ll sp2 = 9973;
const int block = 100;
const double eps = 1e-10;

ll k, n, ans = 0;
vector <pll> vt;

int main(){
	speed;
	cin >> k >> n;
	for(int i = 1; i <= n; i++){
		char f1, f2;
		ll p1, p2;
		cin >> f1 >> p1 >> f2 >> p2;
		if(f1 == f2){
			ans += abs(p1 - p2);
			continue;
		}
		if(p1 > p2)
			swap(p1, p2);
		vt.pb({p1, p2});
	}
  ll res = INF;
	if(k == 1){
		vector <ll> nw;
		for(auto to : vt){
			nw.pb(to.F);
			nw.pb(to.S);
		}
		sort(all(nw));
		ll pref[n + 5];
		for(int i = 0; i < (int)nw.size(); i++){
			if(i == 0)
				pref[i] = nw[i];
			else
				pref[i] = pref[i - 1] + nw[i];
		}
		for(int i = 0; i < (int)nw.size(); i++){
			ll col1 = i + 1, col2 = int(nw.size()) - col1;
			ll cur = (col1 * nw[i] - pref[i]) + ((pref[nw.size() - 1] - pref[i]) - nw[i] * col2);
			res = min(res, cur);
		}
		res += ans;
		res += int(vt.size());
	}
  	cout << res << endl;
}
/*	
%I64d6


1 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7

%I64d
*/ 

• Subtask 1: 0 / 8
• Subtask 2: 0 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37