Submission #847259

#	Time	Username	Problem	Language	Result	Execution time	Memory
847259		TB_	Baloni (COCI15_baloni)	C++17	40 / 100	155 ms	131072 KiB

baloni

#include <bits/stdc++.h>
using namespace std;

// #undef _GLIBCXX_DEBUG                // disable run-time bound checking, etc
// #pragma GCC optimize("Ofast,inline") // Ofast = O3,fast-math,allow-store-data-races,no-protect-parens
// #pragma GCC optimize ("unroll-loops")

// #pragma GCC target("bmi,bmi2,lzcnt,popcnt")                      // bit manipulation
// #pragma GCC target("movbe")                                      // byte swap
// #pragma GCC target("aes,pclmul,rdrnd")                           // encryption
// #pragma GCC target("avx,avx2,f16c,fma,sse3,ssse3,sse4.1,sse4.2") // SIMD

// #include <bits/extc++.h>
// using namespace __gnu_pbds;
// template<class T>using ordered_set = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
// template<class T>using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define ll long long
#define INF (ll)1e9+7
#define fo(i, n) for(ll i=0;i<((ll)n);i++)
#define deb(x) cout << #x << " = " << x << endl;
#define deb2(x, y) cout << #x << " = " << x << ", " << #y << " = " << y << endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define LSOne(S) ((S) & (-S))
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
inline int readint(){ int v = 0; char c; while((c = getchar()) != EOF && c != ' ' && c != '\n'){ v *= 10; v += c - '0'; } return v; }
inline int readintsigned() { int v = 0; int sign = 1; char c = getchar(); if (c == '-') { sign = -1; } else { v += c - '0'; } while ((c = getchar()) != EOF && c != ' ' && c != '\n') { v *= 10; v += c - '0'; } return v * sign; }
inline string readstring() { string s; char c; while ((c = getchar()) != EOF && c != '\n' && c != ' ') { s.push_back(c); } return s; }
template <class result_t=std::chrono::milliseconds,class clock_t=std::chrono::steady_clock,class duration_t = std::chrono::milliseconds>
auto since(std::chrono::time_point<clock_t, duration_t> const& start){return std::chrono::duration_cast<result_t>(clock_t::now() - start);}
typedef pair<int, int> pii;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pl> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;
typedef vector<vpii> vvpii;
typedef vector<vpl> vvpl;

struct Node{
    Node *lnode = nullptr, *rnode;
    bool val = 0; // index
    void update(int lo, int hi, int l, int r){
        if(r <= lo || hi <= l) return;
        if(r <= hi && lo <= l){
            val = 1;
            return;
        }
        push();
        int mid = (l+r) / 2;
        lnode->update(lo, hi, l, mid);
        rnode->update(lo, hi, mid, r);
        val = lnode->val|rnode->val;
    }

    int query(int lo, int hi, int l, int r){
        if(r <= lo || hi <= l || !val) return 0;
        if(r-l == 1){
            val = 0;
            return l+1;
        }
        push();
        int mid = (l+r) / 2;
        int res = 0;
        res = lnode->query(lo, hi, l, mid);
        if(!res) res = rnode->query(lo, hi, mid, r);
        val = lnode->val|rnode->val;
        return res;
    }

    void push(){
        if(lnode == nullptr){
            lnode = new Node();
            rnode = new Node();
        }
    }
};

int main() {
    // cout << fixed << setprecision(20);
    // auto start = std::chrono::steady_clock::now(); // since(start).count()
    cin.tie(0)->sync_with_stdio(0);

    int n, val;
    cin >> n;
    vector<Node> v(1000001);
    fo(i, n) {
        cin >> val;
        v[val].update(i, i+1, 0, 2e6);
    }


    int ans = 0;
    for(int j = 1e6; j>= 0 ; j--){
        while(v[j].val){
            int pos = 0;
            int h = j;
            ans++;
            while(h){
                pos = v[h].query(pos, 2e6, 0, 2e6);
                if(!pos) break;
                h--;
            }
        }
    }
    cout << ans << "\n"; 

    return 0;
}

• Subtask 1: 40 / 100