oj.uz

Submission #919057

# Submission time Handle Problem Language Result Execution time Memory
919057 2024-01-31T07:12:38 Z phamducminh Palembang Bridges (APIO15_bridge) C++17
22 / 100
 97 ms 11480 KB 
//******************/
//*   I<3   C++    */
//*  I WANT ANY AC */
//* I LOVE PROGRAM!*/
//*IT'S long longERESTING*/
//* I LOVE PROGRAM!*/
//*  IN CONTESTS   */
//*   GET SCORE    */
//*    AC CODE     */
//*     LET'S      */
//*      GO        */
//*  Written by:   */
//*   Duc Minh     */






#include <bits/stdc++.h>
#include <iostream>
#include <cmath>
#include <vector>
#include <map>
#include <set>
#include <stack>
#include <algorithm>
#include <string>
#include <queue>
#include <cctype>
#include <cstring>
#include <iomanip>
#include <deque>
// #include <ext/pb_ds/assoc_container.hpp>
// #include <ext/pb_ds/tree_policy.hpp>

using namespace std;
// using namespace __gnu_pbds;

#define  file(name)  freopen(name".inp", "r", stdin);\
                     freopen(name".out", "w", stdout);
#define ordered_set tree<ll, null_type,less_equal<ll>, rb_tree_tag,tree_order_statistics_node_update>
#define TIME        (1.0 * clock() / CLOCKS_PER_SEC)
#define all(a)      a.begin(),a.end()
#define endl        "\n"
#define all1(a)     a+1,a+n+1
// #define unordered_map  map
// #define push_back   emplace_back
// #define gcd(a,b)    __gcd(a,b);
// #define lcm(a,b)    (a*b)/gcd(a,b);

const long long INF = (long long)1e18;
const long long MOD = (long long)1e9+7;
const long long MODD = 1e9; /// 998244353
const long long maxN = 25009;






///--------------------------------


void solve();

signed main(){

    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);


    // file("tbrackets");







    long long t;


    // cin >> t;

    t=1;



    while (t--){




        solve();


    }





    cerr << "Time elapsed: " << TIME << "s.\n";
    cerr << "ducminh" << "\n";
    return 0;
}



///--------------------[PROBLEM SOLUTION]--------------------///


multiset<long long> ss;
struct Compare {
    bool operator() (const long long& a, const long long& b) const {
        return a > b;
    }
};
 
long long n,k,a[200009],pre[200009],suf[200009];
multiset<long long,Compare> down;
multiset<long long> up;
long long sum=0,sum1=0,ans=0,sum2=0;
vector<pair<long long,long long>> pp;






void sub1(){

    ans=0;
    auto it=ss.begin();
 
    if (ss.size()==0) return cout << sum2, void();
 
    advance(it, ss.size()/2);
 
    long long tam=*it;
        
    for (long long x: ss){
     
        ans+=abs(tam-x);
    }
     
    ans+=(ss.size()/2);
    ans+=sum2;
     
    cout << ans;


}

void sub2(){

        if (ss.size()==0) return cout << sum2, void();
 
        vector<long long> luu;
        for (long long x: ss) luu.push_back(x);
 
 
        // down.insert(a[0]);
        // cout << 
        for (long long i=0; i<luu.size(); i++){
 
            // if (a[i-k]<*up.begin()) {if (down.size()) down.erase(down.find(a[i-k]));}
            // else {if (up.size()) up.erase(up.find(a[i-k]));}
            // cout << i << ' ' << a[i-k] << "\n";
            
 
            if (luu[i]<*up.begin() || up.size()==0) down.insert(luu[i]);
            else up.insert(luu[i]);
 
            if (down.size()-up.size()==3){
 
                long long tam=*down.begin();
                down.erase(down.begin());
                up.insert(tam);
            }
            if (down.size()-up.size()==2) {
                up.insert(*down.begin());
                down.erase(down.begin());
            }
            if (up.size()>down.size()){
 
                long long tam=*up.begin();
                up.erase(up.begin());
                down.insert(tam);
            }
 
            pre[i]=*down.begin();
            
 
            // cout << i << ": ";
            // for (long long x: down) cout << x << ' '; 
            // cout << "\n";
            // for (long long x: up) cout << x << ' ';
            // cout << "\n";
 
        
        
        }

        // for (long long i=0; i<luu.size(); i++){

        //     cout << luu[i] << ' ' << pre[i] << "\n";
        // }
 
        down.clear(); up.clear();
 
        for (long long i=luu.size()-1; i>=0; i--){
 
            // if (a[i-k]<*up.begin()) {if (down.size()) down.erase(down.find(a[i-k]));}
            // else {if (up.size()) up.erase(up.find(a[i-k]));}
            // cout << i << ' ' << a[i-k] << "\n";
            
 
            if (luu[i]<*up.begin() || up.size()==0) down.insert(luu[i]);
            else up.insert(luu[i]);
 
            if (down.size()-up.size()==3){
 
                long long tam=*down.begin();
                down.erase(down.begin());
                up.insert(tam);
            }
            if (down.size()-up.size()==2) {
                up.insert(*down.begin());
                down.erase(down.begin());
            }
            if (up.size()>down.size()){
 
                long long tam=*up.begin();
                up.erase(up.begin());
                down.insert(tam);
            }
 
            
            suf[i]=*down.begin();
 
            // cout << i << ':';
            // for (long long x: down) cout << x << ' '; 
            // cout << "\n";
            // for (long long x: up) cout << x << ' ';
            // cout << "\n";
 
        
        
        }
 
        ans=INF;
        for (long long i=0; i<luu.size()-1; i++){
 
            long long tamans=0;
            for (long long j=0; j<pp.size(); j++){
                long long aa = pp[j].first, bb = pp[j].second;
 
                tamans+=min(abs(aa-pre[i])+abs(bb-pre[i]), abs(aa-suf[i+1])+abs(bb-suf[i+1]));
            }
            ans=min(ans,tamans);
        }

        // cout << ans << "\n";
 
        ans+=(ss.size()/2);
        ans+=sum2;
     
        cout << ans;

 
    
}


bool cmp(pair<long long, long long> a, pair<long long, long long> b) {
    return a.first + a.second < b.first + b.second;
}

void solve(){

    
    
    

    long long k,n;
 
    cin >> k >> n;
 
    for (long long i=1; i<=n; i++){
 
        char ch1,ch2;
        long long x,y;
 
        cin >> ch1 >> x >> ch2 >> y;
 
 
        if (ch1!=ch2)  {
            ss.insert(x); ss.insert(y);  pp.push_back({x, y});
            sum+=x+y;
        }
        else sum1+=2,sum2+=abs(y-x);
 
        // pp.push_back({x, y});
    }

    sort(all(pp),cmp);
 
    if (k==1) sub1();
    else sub2();
 


}

Compilation message

bridge.cpp: In function 'void sub2()':
bridge.cpp:165:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  165 |         for (long long i=0; i<luu.size(); i++){
      |                             ~^~~~~~~~~~~
bridge.cpp:253:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  253 |         for (long long i=0; i<luu.size()-1; i++){
      |                             ~^~~~~~~~~~~~~
bridge.cpp:256:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  256 |             for (long long j=0; j<pp.size(); j++){
      |                                 ~^~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 56 ms 11264 KB Output is correct
13 Correct 97 ms 11196 KB Output is correct
14 Correct 77 ms 10232 KB Output is correct
15 Correct 46 ms 6760 KB Output is correct
16 Correct 53 ms 11200 KB Output is correct
17 Correct 57 ms 11408 KB Output is correct
18 Correct 72 ms 11480 KB Output is correct
19 Correct 77 ms 11196 KB Output is correct
20 Correct 57 ms 11416 KB Output is correct
21 Correct 60 ms 11412 KB Output is correct

Subtask #3
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Incorrect 1 ms 2648 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 2396 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 344 KB Output is correct
2 Correct 0 ms 356 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Incorrect 1 ms 2392 KB Output isn't correct
5 Halted 0 ms 0 KB -