Submission #1325945

#	Time	Username	Problem	Language	Result	Execution time	Memory
1325945		antarbanik	Art Exhibition (JOI18_art)	C++20	10 / 100	9 ms	420 KiB

art

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define yes cout << "YES\n";
#define nl cout << endl;
#define no cout << "NO\n";
#define all(x) x.begin(), x.end()
#define allr(x) x.rbegin(), x.rend()
#define pb push_back
#define ppb pop_back
// #define mp make_pair
#define ff first
#define ss second
#define st string
#define fr(i, x, y) for (int i = x; i < y; i++)
#define FAST ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);

// #define MAX 1e18
// #define MIN -1e18

#ifndef ONLINE_JUDGE
#define debug(x) cerr << setw(15) << left << #x << ": "; _print(x); cerr << endl;
#define del cerr << '\n';
#else
#define debug(x)
#define del
#endif

void _print(int t) {cerr << t;}
void _print(string t) {cerr << t;}
void _print(char t) {cerr << t;}

template <typename T, typename V> void _print(const pair<T, V>& p) {cerr << '{'; _print(p.first); cerr << ", "; _print(p.second); cerr << '}';}
template <typename T> void _print(const vector<T>& v) {cerr << '['; for (size_t i = 0; i < v.size(); ++i) {_print(v[i]); if (i != v.size() - 1) cerr << ", ";} cerr << ']';}
template <typename T> void _print(const set<T>& s) {cerr << '{'; bool first = true; for (const auto& x : s) {if (!first) cerr << ", "; _print(x); first = false;} cerr << '}';}
template <typename T> void _print(const multiset<T>& s) {cerr << '{'; bool first = true; for (const auto& x : s) {if (!first) cerr << ", "; _print(x); first = false;} cerr << '}';}
template <typename T, typename V> void _print(const map<T, V>& m) {cerr << '{'; bool first = true; for (const auto& kv : m) {if (!first) cerr << ", "; _print(kv); first = false;} cerr << '}';}

int power(int n, int k){int result = 1;while (k > 0) {if (k & 1) {result = (result * n);}n = (n * n);k >>= 1;}return result;}
int gcd(int a, int b) {if (b > a) {return gcd(b, a);} if (b == 0) {return a;} return gcd(b, a % b);}
int lcm(int a, int b) {return (a / __gcd(a, b)) * b;}
// bool isPrime(int n) {if (n <= 1) return false;if (n == 2) return true;if (n % 2 == 0) return false;for (int i = 3; i * i <= n; i += 2) {if (n % i == 0) return false;}return true;}


/*

A = size of the art works
B = value of the art works





S = tot value of the choosen artworks

Amx = jegula choose kora oise egular modde max size
Amn = jegula choose kora oise egular modde min size




maximize :    S - (Amx - Amn)



*/

const int N = 18;
vector<int> sz(N), val(N);
int n;
void solve(){
    cin>>n;
    for(int i = 0;i<n;++i){
        int a, b; cin>>a>>b;
        sz[i] = a;
        val[i] = b;
    }

    int ans = 0;

    for(int bit = 0;bit<(1<<n);++bit){
        vector<int> temp;
        for(int i = 0;i<n;++i){
            if(bit & (1 << i)){
                temp.pb(i);
            }
        }

        // for(auto e : temp) cout<<e<<" ";

        if(temp.empty()) continue;

        int s = 0;
        int Amx = -1e18, Amn = 1e18;
        for(auto e : temp){
            s += val[e];
            Amx = max(Amx, sz[e]);
            Amn = min(Amn, sz[e]);
        }



        ans = max(ans, s - (Amx - Amn));

    }



    cout<<ans;



}


int32_t main() {
    FAST



    #ifndef ONLINE_JUDGE
        freopen("error.txt", "w", stderr);
    #endif


    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
        cout << endl;
    }
}

Compilation message (stderr)

art.cpp: In function 'int32_t main()':
art.cpp:122:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  122 |         freopen("error.txt", "w", stderr);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 50