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Submission #1093286

# Submission time Handle Problem Language Result Execution time Memory
1093286 2024-09-26T12:39:51 Z giaminh2211 Palembang Bridges (APIO15_bridge) C++14
22 / 100
 30 ms 4580 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=*fi.rbegin();
        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 2392 KB Output is correct
2 Correct 1 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 2392 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2532 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

Subtask #2
14.0 / 14.0

# 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 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2392 KB Output is correct
6 Correct 1 ms 2396 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 2396 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 4568 KB Output is correct
13 Correct 30 ms 4564 KB Output is correct
14 Correct 20 ms 4568 KB Output is correct
15 Correct 17 ms 3548 KB Output is correct
16 Correct 25 ms 4568 KB Output is correct
17 Correct 21 ms 4564 KB Output is correct
18 Correct 28 ms 4568 KB Output is correct
19 Correct 28 ms 4564 KB Output is correct
20 Correct 20 ms 4568 KB Output is correct
21 Correct 25 ms 4580 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 1 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 348 KB Output is correct
4 Incorrect 1 ms 2392 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Incorrect 1 ms 348 KB Output isn't correct
5 Halted 0 ms 0 KB -