Submission #771107

#	Time	Username	Problem	Language	Result	Execution time	Memory
771107		VahanAbraham	Financial Report (JOI21_financial)	C++14	12 / 100	34 ms	7240 KiB

Main

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <string>
#include <algorithm>
#include <cstring>
#include <cstdio>
#include <sstream>
#include <map>
#include <stack>
#include <set>
#include <queue>
#include <unordered_set>
#include <unordered_map>
#include <math.h>
#include <cmath>
#include <vector>
#include <iomanip>
using namespace std;

#define ll long long
#define fr first
#define sc second
#define pb push_back
#define US freopen("revegetate.in", "r", stdin); freopen("revegetate.out", "w", stdout);
#define m_p make_pair
#define moo -1000000000000000;
#define poo 1000000000000000;

ll gcd(ll a, ll b)
{
    if (a == 0 || b == 0) {
        return  max(a, b);
    }
    if (a <= b) {
        return gcd(a, b % a);
    }
    else {
        return gcd(a % b, b);
    }
}

ll lcm(ll a, ll b) {
    return (a / gcd(a, b)) * b;
}

const int N = 300010;

ll mx[N];
ll a[N];
ll b[N];
ll ans[N];

void solve() {
    int n, d;
    cin >> n >> d;
    for (int i = 1;i <= n;i++) {
        cin >> a[i];
    }
    if (d == 1) {
        if (n == 1) {
            cout << 1 << endl;
            return;
        }
        ll pat = 1, l = n - 1, r = n;
        mx[n] = a[n];
        ans[n] = 1;
        for (int i = n - 1;i >= 1;i--) {
            ll kk = n + 1;
            r = n;
           // cout << i << " " << l << " " << r << endl;
            while (l <= r) {
                ll mid = (l + r) / 2;
                //cout << i << " " << mid << " " << mx[mid] << endl;
                if (mx[mid] > a[i]) {
                    kk = mid;
                    r = mid-1;
                }
                else {
                    l = mid+1;
                }
            }
            //cout << kk << " " << i << endl;
            if (kk != n + 1) {
                pat = max(ans[kk]+1, pat);
                ans[kk - 1] = ans[kk] + 1;
                mx[kk-1] = a[i];
                l = kk-1;
            }
            else {
                l = n;
                ans[l] = 1;
                mx[l] = a[i];
            }
        }
        cout << pat << endl;
    }
}


int main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    //US
    int tt = 1;
    //cin >> tt;
    while (tt--) {
        solve();
    }
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 14
• Subtask 3: 0 / 20
• Subtask 4: 12 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35