Submission #505474

#	Time	Username	Problem	Language	Result	Execution time	Memory
505474		Pragmatism	Simple game (IZhO17_game)	C++17	0 / 100	1 ms	332 KiB

game

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <string>
#include <set>
#include <vector>
#include <cmath>
#include <map>
#include <algorithm>
#include <stack>
#include <queue>
#include <cstdlib>
#include <cstdio>
#include <cstring>
#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <string>
#include <sstream>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <ctime>
#include <unordered_map>
#include <unordered_set>
#include <cassert>


#define __builtin_popcount __popcnt
#define pb push_back
#define pob pop_back
#define pll pair <long long, long long>
#define pld pair <long double, long double>
#define ll long long
#define ull unsigned long long
#define ld long double
#define int ll // HERE CAN BE WA/RE/MLE/TLE
#define Int int 
#define itn int
#define nit int
#define x first
#define y second
#define all(v) v.begin(),v.end()
#define sz(s) s.size()
#define skip continue
#define y0 ijl
#define y1 hjk
#define equal bayan
#define friend trs
#define delete bae
#define div aber
#define exp earb
#define new aer

using namespace std;

const int N = 5e6 + 7;
const int WN = 1e5 + 7;
const int inf = 1e9 + 7;
const int INF = 1e18 + 7;
const int MOD = 998244353;



int a[N];
int t[N];
int z[N];
void push(int v, int tl, int tr) {
    if (z[v] == 0)return;
    t[v] += z[v] * (tr - tl + 1);
    if (tl != tr)z[v * 2] += z[v * 2 + 1] += z[v];
    z[v] = 0;
}
int get(int v, int tl, int tr, int l, int r) {
    push(v, tl, tr);
    if (tr < l || tl > r)return 0;
    if (tl >= l && tr <= r)return t[v];
    int mid = (tl + tr) / 2;
    return (get(v * 2, tl, mid, l, r) + get(v * 2 + 1, mid + 1, tr, l, r));
}
void update(int v, int tl, int tr, int l, int r, int x) {
    push(v, tl, tr);
    if (tr < l || tl > r)return;
    if (tl >= l && tr <= r) {
        z[v] += x;
        push(v, tl, tr);
        return;
    }
    int mid = (tl + tr) / 2;
    update(v * 2, tl, mid, l, r, x), update(v * 2 + 1, mid + 1, tr, l, r, x);
    t[v] = t[v * 2] + t[v * 2 + 1];
}
void solve() {
    int n, q;
    cin >> n >> q;
    for (int i = 1;i <= n;i++) {
        cin >> a[i];
        if (i != 1) {
            if (a[i] - 1 > a[i - 1])update(1, 1, n, a[i - 1] + 1, a[i] - 1, 1);
            if (a[i] + 1 < a[i - 1])update(1, 1, n, a[i] + 1, a[i - 1] - 1, 1);
        }
    }
    while (q--) {
        int type, pos, x, h;
        cin >> type;
        /*for (int i = 1;i <= n;i++) {
            for (int j = 1;j <= n;j++) {
                if (j == i)skip;
                cout << i << ' ' << j << ':';
                cout << get(1, 1, n, i, j) << '\n';
            }
        }
        */
        if (type == 1) {
            cin >> pos >> x;
            if (pos != 1) {
                if (a[pos] - 1 > a[pos - 1])update(1, 1, n, a[pos - 1] + 1, a[pos] - 1, -1);
                if (a[pos] + 1 < a[pos - 1])update(1, 1, n, a[pos] + 1, a[pos - 1] - 1, -1);
            }
            if (pos != n) {
                if (a[pos] - 1 > a[pos + 1])update(1, 1, n, a[pos + 1] + 1, a[pos] - 1, -1);
                if (a[pos] + 1 < a[pos + 1])update(1, 1, n, a[pos] + 1, a[pos + 1] - 1, -1);
            }
            a[pos] = x;
            if (pos != 1) {
                if (a[pos] - 1 > a[pos - 1])update(1, 1, n, a[pos - 1] + 1, a[pos] - 1, 1);
                if (a[pos] + 1 < a[pos - 1])update(1, 1, n, a[pos] + 1, a[pos - 1] - 1, 1);
            }
            if (pos != n) {
                if (a[pos] - 1 > a[pos + 1])update(1, 1, n, a[pos + 1] + 1, a[pos] - 1, 1);
                if (a[pos] + 1 < a[pos + 1])update(1, 1, n, a[pos] + 1, a[pos + 1] - 1, 1);
            }
        }
        else {
            cin >> h;
            cout << get(1, 1, n, h, h) << '\n';
        }
    }
}
signed main() {
    ios_base::sync_with_stdio(NULL);
    cin.tie(0);
    cout.tie(0);
    //freopen("sum.in", "r", stdin);
    //freopen("sum.out", "w", stdout);
    int tt;
    tt = 1;
    //cin >> tt;//Here can be tupism
    while (tt--)solve();
    return 0;
}

• Subtask 1: 0 / 22
• Subtask 2: 0 / 27
• Subtask 3: 0 / 51