Submission #1038317

#	Time	Username	Problem	Language	Result	Execution time	Memory
1038317		TrinhKhanhDung	Money (IZhO17_money)	C++14	100 / 100	623 ms	54980 KiB

money

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define sz(x) (int)x.size()
#define ALL(v) v.begin(),v.end()
#define MASK(k) (1LL << (k))
#define BIT(x, i) (((x) >> (i)) & 1)
#define oo (ll)1e18
#define INF (ll)1e9
#define MOD (ll)(1e9 + 7)

using namespace std;

template<class T1, class T2>
    bool maximize(T1 &a, T2 b){if(a < b){a = b; return true;} return false;}

template<class T1, class T2>
    bool minimize(T1 &a, T2 b){if(a > b){a = b; return true;} return false;}

template<class T1, class T2>
    void add(T1 &a, T2 b){a += b; if(a >= MOD) a -= MOD;}

template<class T1, class T2>
    void sub(T1 &a, T2 b){a -= b; if(a < 0) a += MOD;}

template<class T>
    void cps(T &v){sort(ALL(v)); v.resize(unique(ALL(v)) - v.begin());}

const int MAX = 1e6 + 10;

int N;
int a[MAX];

void solve(){
    cin >> N;
    for(int i=1; i<=N; i++){
        cin >> a[i];
    }

    set<int> st;
    st.insert((int)1e9);
    int ans = 0;
    int i = 1;
    while(i <= N){
        int up = *st.upper_bound(a[i]);
        st.insert(a[i]);
        while(i < N && a[i + 1] >= a[i] && a[i + 1] <= up){
            st.insert(a[i + 1]);
            i++;
        }

        ans++;
        i++;
    }

    cout << ans << '\n';
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
//    freopen("task.inp", "r", stdin);
//    freopen("task.out", "w", stdout);

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

    return 0;
}

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55