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Submission #1093288

# Submission time Handle Problem Language Result Execution time Memory
1093288 2024-09-26T12:40:28 Z giaminh2211 Palembang Bridges (APIO15_bridge) C++14
22 / 100
 31 ms 4624 KB 
#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define fi first
#define se second
#define int long long


using namespace std;
using namespace __gnu_pbds;
using ll=long long;
using pii=pair<ll, ll>;

struct GetMedian{
    multiset<ll> fi;
    multiset<ll> se;
    ll fsum=0, ssum=0;

    void add(ll x){
        se.insert(x);
        ssum+=x;

        while(fi.size() && fi.size() > se.size()){
            ll val=*fi.rbegin();
            fsum-=val;
            fi.erase(fi.find(val));
            se.insert(val);
            ssum+=val;
        }

        while(se.size() && se.size() > fi.size()){
            ll val=*se.begin();
            ssum-=val;
            se.erase(se.begin());
            fi.insert(val);
            fsum+=val;
        }
    }

    ll get(){
        ll med=*se.begin();
        ll val=(med * fi.size() - fsum) + (ssum - med * se.size());
        return val;
    }

    void clear(){
        fi.clear();
        se.clear();
        fsum=ssum=0;
    }
};

int k, n;
const int N=1e5+13;
int a[N];
ll res;
char c1, c2;
int x, y;

namespace sub1{
    vector<int> v;
    void solve(){
        for(int i=1; i<=n; i++){
            cin >> c1 >> x >> c2 >> y;
            if(c1==c2){
                res+=abs(x-y);
            }
            else{
                v.push_back(x);
                v.push_back(y);
                ++res;
            }
        }
        sort(begin(v), end(v));
        for(int c: v){
            res+=abs(c-v[v.size()/2]);
        }
        cout << res;
    }
}

vector<pair<int, int>> v;
ll l[N];
ll r[N];

void solve(){
    cin >> k >> n;
    if(k==1){
        sub1::solve();
        exit(0);
    }
    v.push_back({0, 0});
    for(int i=1; i<=n; i++){
        cin >> c1 >> x >> c2 >> y;
        if(c1==c2){
            res+=abs(x-y);
        }
        else{
            if(x > y) swap(x, y);
            v.push_back(make_pair(x, y));
            ++res;
        }
    }
    if(v.empty()){
        cout << res;
        return;
    }
    sort(begin(v)+1, end(v), [&](pii x, pii y){
        return x.fi + x.se < y.fi + y.se;
    });
    n=v.size()-1;
    GetMedian sus;
    for(int i=1; i<=n; i++){
        sus.add(v[i].fi);
        sus.add(v[i].se);
        l[i]=sus.get();
    }
    sus.clear();
    for(int i=n; i>=1; i--){
        sus.add(v[i].fi);
        sus.add(v[i].se);
        r[i]=sus.get();
    }
    ll ans=l[n];
    for(int i=1; i<n; i++){
        ans=min(ans, l[i]+r[i+1]);
    }
    cout << res+ans;
}

main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
}

Compilation message

bridge.cpp:131:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  131 | main(){
      | ^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2392 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2648 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2392 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 14 ms 4556 KB Output is correct
13 Correct 31 ms 4624 KB Output is correct
14 Correct 21 ms 4568 KB Output is correct
15 Correct 17 ms 3548 KB Output is correct
16 Correct 17 ms 4564 KB Output is correct
17 Correct 19 ms 4568 KB Output is correct
18 Correct 25 ms 4564 KB Output is correct
19 Correct 28 ms 4568 KB Output is correct
20 Correct 22 ms 4564 KB Output is correct
21 Correct 26 ms 4568 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Incorrect 1 ms 2396 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Incorrect 1 ms 2392 KB Output isn't correct
5 Halted 0 ms 0 KB -