oj.uz

Submission #919408

# Submission time Handle Problem Language Result Execution time Memory
919408 2024-01-31T17:43:34 Z phamducminh Palembang Bridges (APIO15_bridge) C++17
100 / 100
 308 ms 28816 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;


}

long long suml=0, sumr=0;

inline void push(long long val){

    if (val<*up.begin() || up.size()==0) down.insert(val),suml+=val;
    else up.insert(val),sumr+=val;
 
    if (down.size()-up.size()==3){
 
        long long tam=*down.begin();
        down.erase(down.find(tam)); suml-=tam; sumr+=tam;
        up.insert(tam);
    }
    if (down.size()-up.size()==2) {
        long long tam=*down.begin();
        up.insert(*down.begin()); suml-=tam; sumr+=tam;
        down.erase(down.find(tam));
    }
    if (up.size()>down.size()){
 
        long long tam=*up.begin();
        up.erase(up.find(tam)); suml+=tam; sumr-=tam;
        down.insert(tam);
    }
}

long long get(){

    long long tam=*down.begin();

    return (sumr - 1LL*tam*up.size()) + (1LL*tam*down.size() - suml);
}

void sub2(){

        if (ss.size()==0) return cout << sum2, void();
 
        vector<long long> luu;
        for (long long x: ss) luu.push_back(x);
 


        for (long long i=0; i<pp.size(); i++){
            push(pp[i].first); push(pp[i].second);
            pre[i]=get();
        }
 
        // 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();
        suml=0; sumr=0;


        for (long long i=pp.size()-1; i>=0; i--){

            push(pp[i].first); push(pp[i].second);
            suf[i]=get();
        }
 
        // 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";
 
        
        
        // }

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

        //     cout << i << ' ' << suf[i] << "\n";
        // }
        // cout << pre[pp.size()-1]+(luu.size()/2)+sum2 << "\n";

        long long pos=0;
 
        ans=INF;
        for (long long i=0; i<pp.size()-1; i++){
 
            ans=min(ans,pre[i]+suf[i+1]);
        }

        // cout << ans << ' ' << suf[pos] << "\n";
 
        ans+=(luu.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:197:30: 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]
  197 |         for (long long i=0; i<pp.size(); i++){
      |                             ~^~~~~~~~~~
bridge.cpp:308:30: 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]
  308 |         for (long long i=0; i<pp.size()-1; i++){
      |                             ~^~~~~~~~~~~~
bridge.cpp:305:19: warning: unused variable 'pos' [-Wunused-variable]
  305 |         long long pos=0;
      |                   ^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 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 348 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

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 348 KB Output is correct
3 Correct 1 ms 344 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 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 51 ms 11364 KB Output is correct
13 Correct 113 ms 11416 KB Output is correct
14 Correct 88 ms 10100 KB Output is correct
15 Correct 46 ms 6784 KB Output is correct
16 Correct 57 ms 11208 KB Output is correct
17 Correct 54 ms 11200 KB Output is correct
18 Correct 61 ms 11364 KB Output is correct
19 Correct 70 ms 11204 KB Output is correct
20 Correct 60 ms 11624 KB Output is correct
21 Correct 76 ms 11432 KB Output is correct

Subtask #3
9.0 / 9.0

# 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 2392 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 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 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2512 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct

Subtask #4
32.0 / 32.0

# 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 2648 KB Output is correct
4 Correct 1 ms 2804 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 2392 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 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 2 ms 2656 KB Output is correct
14 Correct 2 ms 2652 KB Output is correct
15 Correct 2 ms 2652 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 2 ms 2652 KB Output is correct
20 Correct 2 ms 2652 KB Output is correct
21 Correct 2 ms 2652 KB Output is correct
22 Correct 2 ms 2652 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 2 ms 2652 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 1 ms 2392 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2400 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 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct
13 Correct 2 ms 2652 KB Output is correct
14 Correct 2 ms 2652 KB Output is correct
15 Correct 2 ms 2652 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2652 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 2 ms 2652 KB Output is correct
20 Correct 2 ms 2652 KB Output is correct
21 Correct 2 ms 2808 KB Output is correct
22 Correct 2 ms 2904 KB Output is correct
23 Correct 2 ms 2652 KB Output is correct
24 Correct 2 ms 2808 KB Output is correct
25 Correct 151 ms 27192 KB Output is correct
26 Correct 244 ms 27520 KB Output is correct
27 Correct 299 ms 28232 KB Output is correct
28 Correct 308 ms 28816 KB Output is correct
29 Correct 292 ms 28744 KB Output is correct
30 Correct 123 ms 15420 KB Output is correct
31 Correct 155 ms 28300 KB Output is correct
32 Correct 138 ms 28808 KB Output is correct
33 Correct 137 ms 28580 KB Output is correct
34 Correct 186 ms 28816 KB Output is correct
35 Correct 147 ms 28540 KB Output is correct
36 Correct 159 ms 28704 KB Output is correct
37 Correct 154 ms 27396 KB Output is correct