Submission #47343

#	Time	Username	Problem	Language	Result	Execution time	Memory
47343		rkocharyan	Money (IZhO17_money)	C++14	100 / 100	985 ms	156688 KiB

money

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <algorithm>
#include <memory>
#include <functional>
#include <numeric>
#include <sstream>
#include <queue>
#include <deque>
#include <list>
#include <vector>
#include <stack>
#include <set>
#include <unordered_set>
#include <map> 
#include <unordered_map>
#include <bitset>
#include <tuple>
#include <string>
#include <cstring>
#include <cmath>
#include <cstdio>
#include <cassert>
#include <climits>
#include <ctime>
using namespace std;

#define rep(i, x, y) for(int i = x; i <= y; ++i)
#define mp make_pair
#define add push_back
#define sz(x) (int)(x).size()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define mem(a,b) memset(a, b, sizeof(a))
#pragma warning(disable:4996)
#pragma comment(linker, "/STACK:20000007")
#pragma GCC optimize("unroll-loops")

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

typedef pair <int, int> pii;
typedef vector <int> lnum;

const int N = (int)1e6 + 100;
const int maxn = (int)1e3 + 100;
const int base = (int)1e9;
const int mod = (int)1e9 + 7;
const int inf = INT_MAX;
const long long ll_inf = LLONG_MAX;
const long double PI = acos((long double)-1.0);
const long double eps = 1e-8;

int T[4 * N];

void update(int v, int tl, int tr, int pos, int val) {
	if (tl == tr) {
		T[v] += val;
		return;
	}
	int tm = (tl + tr) >> 1;
	if (pos <= tm) update(2 * v + 1, tl, tm, pos, val);
	else update(2 * v + 2, tm + 1, tr, pos, val);
	T[v] = T[2 * v + 1 ] + T[2 * v + 2];
}

int query(int v, int tl, int tr, int l, int r) {
	if (l > r) return 0;
	if (tl == l && tr == r) return T[v];
	int tm = (tl + tr) >> 1;
	return query(2 * v + 1, tl, tm, l, min(r, tm)) + 
		query(2 * v + 2, tm + 1, tr, max(l, tm + 1), r);
}

void solve() {
	int n, ans = 0; cin >> n;
	vector <int> V(n);
	for (int i = 0; i < n; ++i) {
		cin >> V[i];
	}
	for (int i = 0; i < n;) {
		++ans;
		int j = i;
		for (; j + 1 < n && V[j] <= V[j + 1] && !query(0, 0, N - 1, V[i] + 1, V[j + 1] - 1);) ++j;
		for (; i <= j && i < n; ++i) {
			update(0, 0, N - 1, V[i], 1);
		}
	}
	cout << ans << endl;
}

/*
6
3 6 4 5 1 2
*/

int main() {
	//ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);

	//#define Freopen
#ifdef Freopen
#ifndef _MSC_VER 
#define TASK ""
	freopen(TASK".in", "r", stdin);
	freopen(TASK".out", "w", stdout);
#endif
#endif

	int T = 1;
	//scanf("%d", &T);

	for (; T; --T) solve();

#ifdef DEBUG
	cerr << double(1.0 * clock() / CLOCKS_PER_SEC) << '\n';
#endif 

	return 0;
}

Compilation message (stderr)

money.cpp:36:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning(disable:4996)
 
money.cpp:37:0: warning: ignoring #pragma comment  [-Wunknown-pragmas]
 #pragma comment(linker, "/STACK:20000007")

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