Submission #249625

#	Time	Username	Problem	Language	Result	Execution time	Memory
249625		AMO5	Palembang Bridges (APIO15_bridge)	C++17	0 / 100	1 ms	512 KiB

bridge

#include <bits/stdc++.h>
 
using namespace std;
 
#define fi first
#define se second
#define eb emplace_back
#define mt make_tuple
#define all(x) (x).begin(), (x).end()  
#define sz(x) int(x.size()) 
#define MOD 1000000007
 
typedef long long ll;
typedef pair <int, int> ii;
typedef pair <ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef long double ld;
 
bool DEBUG=0;
 
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
	int k,n;
	vll coor;
	vector<pll>str;
	cin >> k >> n;
	ll ans = 0ll;
	for(int i=0; i<n; i++){
		char p; ll s; char q; ll t;
		cin >> p >> s >> q >> t;
		if(p==q){
			ans += abs(s-t);
		}else{
			if(s>t)swap(s,t);
			ans+=t-s+1ll;
			str.eb(s,t);
		}
	}
	n=sz(str);
	//k=1
	for(ii x:str){
		coor.eb(x.fi);
		coor.eb(x.se);
	}
	sort(all(coor));
	ll bridge1=coor[n-1],bridge2=coor[n];
	ll res1=0ll,res2=0ll;
	for(int i=0; i<n; i++){
		if(bridge1<str[i].fi){
			res1 += 2ll*(str[i].fi-bridge1);
		}else if(bridge1>str[i].se){
			res1 += 2ll*(bridge1-str[i].se);
		}
		if(bridge2<str[i].fi){
			res2 += 2ll*(str[i].fi-bridge2);
		}else if(bridge2>str[i].se){
			res2 += 2ll*(bridge2-str[i].se);
		}
	}
	ans += min(res1,res2);
	cout << ans << '\n';
	return 0;
}

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