Submission #1147587

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147587		Theo830	Palembang Bridges (APIO15_bridge)	C++20	9 / 100	2095 ms	584 KiB

bridge

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ii,ll>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
ll anss = 1e18;
char p[100005],q[100005];
ll solve(ll a,ll b,ll x[],ll y[],ll n){
    ll ans = 0;
    f(i,0,n){
        if(p[i] != q[i]){
            ans += min(abs(a - x[i]) + abs(a - y[i]),abs(b - x[i]) + abs(b - y[i]));
        }
    }
    anss = min(ans,anss);
    return ans;
}
int main(void){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll k,n;
    cin>>k>>n;
    assert(k == 2);
    ll s[n],t[n];
    set<ll>ex;
    ll res = 0;
    f(i,0,n){
        cin>>p[i]>>s[i]>>q[i]>>t[i];
        ex.insert(s[i]);
        ex.insert(t[i]);
        if(p[i] != q[i]){
            res++;
        }
        else{
            res += abs(s[i] - t[i]);
        }
    }
    vector<ll>vale;
    for(auto x:ex){
        vale.pb(x);
    }
    vale.pb(1e9);
    for(auto x:vale){
        for(auto y:vale){
            solve(x,y,s,t,n);
        }
    }
    cout<<anss + res<<"\n";
}
/*
2 5
B 0 A 4
B 1 B 3
A 5 B 7
B 2 A 6
B 1 A 7
*/

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