Submission #1255511

#	Time	Username	Problem	Language	Result	Execution time	Memory
1255511		CrabCNH	Employment (JOI16_employment)	C++20	30 / 100	379 ms	34620 KiB

employment

#include <bits/stdc++.h>

#define task     "BriantheCrab"

#define int    long long
#define pii    pair <int, int>
#define fi     first
#define se     second
#define szf    sizeof
#define sz(s)  (int)((s).size())
#define all(v) (v).begin(), (v).end()

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

using namespace std;

template <class T> void minimize (T &t, T f) {if (t > f) t = f;}
template <class T> void maximize (T &t, T f) {if (t < f) t = f;}

const int maxN = 2e5 + 5;
const int inf = 1e18 + 7;
const int mod = 1e9 + 7;

// khong tu code thi khong kha len duoc dau
// biet sol roi thi tu lam not di

struct ST {
    vector <int> st, lazy;
    
    void init (int _n) {
        st.resize (_n * 4, 0);
        lazy.resize (_n * 4, 0);
    }
    
    void push (int id, int l, int r) {
        int &t = lazy[id];
        int mid = (l + r) >> 1;
        if (t != 0) {
            st[id * 2] += t * (l - mid + 1);
            lazy[id * 2] += t;
            st[id * 2 + 1] += t * (r - mid);
            lazy[id * 2 + 1] += t; 
        }
        t = 0;
    }
    
    void upd (int id, int l, int r, int u, int v, int val) {
        if (v < l || u > r) {
            return;
        }
        if (u <= l && r <= v) {
            st[id] += val;
            lazy[id] += val;
            return;
        }
        int mid = (l + r) >> 1;
        push (id, l, r);
        upd (id * 2, l, mid, u, v, val);
        upd (id * 2 + 1, mid + 1, r, u, v, val);
        st[id] = st[id * 2] + st[id * 2 + 1];
        return;
    }
    
    int get (int id, int l, int r, int u, int v) {
        if (v < l || u > r) {
            return 0;
        }
        if (u <= l && r <= v) {
            return st[id];
        }
        int mid = (l + r) >> 1;
        push (id, l, r);
        int tL = get (id * 2, l, mid, u, v);
        int tR = get (id * 2 + 1, mid + 1, r, u, v);
        return (tL + tR);
    }
};

int n, m;
int a[maxN];
pii off[maxN];
ST T;

void print (int lim) {
    cout << "print\n";
    for (int i = 1; i <= lim; i ++) {
        cout << T.get (1, 1, lim, i, i) << ' ';
    }
    cout << '\n';
}

void solve () {
    cin >> n >> m;
    vector <int> zip;
    for (int i = 1; i <= n; i ++) {
        cin >> a[i];
        zip.push_back (a[i]);
    }
    for (int i = 1; i <= m; i ++) {
        int t;
        cin >> t;
        if (t == 1) {
            int b;
            cin >> b;
            off[i] = {b, -1};
            zip.push_back (b);
        }
        else {
            int c, d;
            cin >> c >> d;
            off[i] = {c, d};
            zip.push_back (d);
        }
    }
    sort (all (zip));
    zip.erase (unique (all (zip)), zip.end ());
    for (int i = 1; i <= n; i ++) {
        a[i] = lower_bound (all (zip), a[i]) - zip.begin () + 1;
        //cout << a[i] << '\n';
    }
    for (int i = 1; i <= m; i ++) {
        if (off[i].se == -1) {
            off[i].fi = lower_bound (all (zip), off[i].fi) - zip.begin () + 1;
            //cout << 1 << ' ' << off[i].fi << '\n';
        }
        else {
            off[i].se = lower_bound (all (zip), off[i].se) - zip.begin () + 1;
            //cout << 2 << ' ' << off[i].fi << ' ' << off[i].se << '\n';
        }
    }
    int lim = sz (zip) + 2;
    T.init (lim);
    for (int i = 1; i <= n; i ++) {
        T.upd (1, 1, lim, 1, a[i], 1);
        if (i >= 2) {
            T.upd (1, 1, lim, 1, min (a[i], a[i - 1]), -1);
        }
    } 
    for (int j = 1; j <= m; j ++) {
        if (off[j].se == -1) {
            cout << T.get (1, 1, lim, off[j].fi, off[j].fi) << '\n';
        }
        else {
            //print (lim);
            auto [i, val] = off[j];
            T.upd (1, 1, lim, 1, a[i], -1);
            //print (lim);
            if (i <= n - 1) {
                T.upd (1, 1, lim, 1, min (a[i], a[i + 1]), 1);
            }
            //print (lim);
            if (i >= 2) {
                T.upd (1, 1, lim, 1, min (a[i], a[i + 1]), 1);
            }
            //print (lim);
            a[i] = val;
            T.upd (1, 1, lim, 1, a[i], 1);
           // print (lim);
            if (i <= n - 1) {
                T.upd (1, 1, lim, 1, min (a[i], a[i + 1]), -1);
                //print (lim);
            }
            if (i >= 2) {
                T.upd (1, 1, lim, 1, min (a[i], a[i - 1]), -1);
                //print (lim);
            }
        }
    }
    return;
}

signed main () {
    cin.tie (nullptr) -> sync_with_stdio (false);
    if (fopen (task".inp", "r")) {
        freopen (task".inp", "r", stdin);
        freopen (task".out", "w", stdout);
    }
    int t = 1;
    //cin >> t;
    while (t --) {
        solve ();
    } 
    return 0;
}
// thfv

Compilation message (stderr)

employment.cpp: In function 'int main()':
employment.cpp:177:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  177 |         freopen (task".inp", "r", stdin);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
employment.cpp:178:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  178 |         freopen (task".out", "w", stdout);
      |         ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 30 / 30
• Subtask 3: 0 / 60