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답안 #954059

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
954059 2024-03-27T08:09:33 Z TAhmed33 Peru (RMI20_peru) C++17
49 / 100
 600 ms 42632 KB 
#include <bits/stdc++.h>
#include <peru.h>
using namespace std;
typedef long long ll;
const ll inf = 1e16;
const int MAXN = 2'500'000 + 25;
const int MOD = 1e9 + 7;
int add (int a, int b) {
	a += b; if (a >= MOD) a -= MOD;
	return a;
}
int sub (int a, int b) {
	a -= b; if (a < 0) a += MOD;
	return a;
}
int mul (int a, int b) {
	return (a * 1ll * b) % MOD;
}
int pw[MAXN];
ll a[MAXN], n, k;
deque <array <ll, 4>> cur;
deque <ll> dd;
ll dp[MAXN];
struct MinimumStack {
	stack <pair <ll, ll>> dd;
	ll get () {
		return dd.empty() ? inf : dd.top().second;
	}
	void pop() { dd.pop(); }
	bool empty () { return dd.empty(); }
	void push (ll x) {
		ll mn = x; if (!empty()) x = min(x, get());
		dd.push({x, mn});
	}	
	int size () {
		return (int)dd.size();
	}
	ll top () { return dd.empty() ? inf : dd.top().first; }
	void swap (MinimumStack &x) {
		dd.swap(x.dd);
	}
};
struct MonotonicDeque {
	deque <ll> cur;
	void push_front (ll x) {
		cur.push_front(x);
	}
	void push_back (ll x) {
		cur.push_back(x);
	}
	void pop_front () {
		cur.pop_front();
	}
	void pop_back () {
		cur.pop_back();
	}
	ll get () {
		ll ret = 1e18;
		for (auto i : cur) ret = min(ret, i);
		return ret;
	}
	// MinimumStack left, right, temp;
	// void upd () {
	// 	if (right.empty() && left.empty()) return;
	// 	bool f = 0;
	// 	if (right.empty()) {
	// 		f = 1; left.swap(right); 
	// 	}
	// 	int x = (int)right.size() / 2;
	// 	while (x--) {
	// 		temp.push(right.top());
	// 		right.pop();
	// 	}
	// 	while (!right.empty()) {
	// 		left.push(right.top()); right.pop();
	// 	}
	// 	while (!temp.empty()) {
	// 		right.push(temp.top()); temp.pop();
	// 	}
	// 	if (f) {
	// 		left.swap(right);
	// 	}
	// }
	// ll get () {
	// 	return min(left.get(), right.get());
	// }
	// int size () {
	// 	return (int)left.size() + (int)right.size();
	// }
	// bool empty() {
	// 	return size() == 0;
	// }
	// void push_back (ll x) {
	// 	right.push(x);
	// }
	// void pop_back() {
	// 	if (right.empty()) upd();
	// 	right.pop();
	// }
	// void push_front (ll x) {
	// 	left.push(x);
	// }
	// void pop_front() {
	// 	if (left.empty()) upd();
	// 	left.pop();
	// }
	// ll back () {
	// 	if (right.empty()) upd();
	// 	return right.top();
	// }
	// ll front () {
	// 	if (left.empty()) upd();
	// 	return left.top();
	// }
} cur2;
int solve (int n, int k, int *a) {
	pw[0] = 1; for (int i = 1; i < MAXN; i++) {
		pw[i] = mul(23, pw[i - 1]);
	}
	int last = 0;
	for (int i = 1; i <= n; i++) {
		array <ll, 4> v = {i, i - 1, i - 1, dp[i - 1]};
		while (!cur.empty() && a[cur.back()[0] - 1] < a[i - 1]) {
			v[1] = cur.back()[1], v[3] = min(v[3], cur.back()[3]);
			cur.pop_back();
			cur2.pop_back();
		}
		cur.push_back(v); cur2.push_back(a[i - 1] + v[3]);
		while (!cur.empty() && cur[0][0] <= i - k) {
			cur.pop_front(); cur2.pop_front();
		}
		for (int j = last; j < cur[0][0]; j++) {
			while (!dd.empty() && dp[dd.back()] >= dp[j]) dd.pop_back(); 
			dd.push_back(j);
		}
		last = cur[0][0];
		while (!dd.empty() && dd.front() < i - k) dd.pop_front();
		cur2.pop_front();
		cur2.push_front(a[cur[0][0] - 1] + dp[dd.front()]);
	    /*cout << i << ": \n";
		for (auto j : cur) {
			for (auto l : j) cout << l << " ";
			cout << '\n';
		}
		cout << '\n';
		for (auto j : dd) cout << j << " ";
		cout << '\n' << '\n';
        */
		//cout << cur[0][0] << " " << a[cur[0][0] - 1] << " " << dd.front() << " " << dp[dd.front()] << '\n';
		//ll mx = a[cur[0][0] - 1] + dp[dd.front()];
		//mx = min(mx, cur2.get());
        //for(auto j:cur)if (j[0]!=last)mx=min(mx,a[j[0]-1]+j[3]);
		/*cout << cur2.get() << '\n';
		for (auto j : cur2.cur) cout << j << " ";
		cout << '\n';*/
		dp[i] = cur2.get();
	}
//	for (int i = 1; i <= n; i++) cout << dp[i] << " ";
	//cout << '\n';
	int ret = 0;
	for (int i = 1; i <= n; i++) ret = add(ret, mul(dp[i] % MOD, pw[n - i]));
	return ret;
}

Subtask #1
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 14680 KB Output is correct
2 Correct 16 ms 14684 KB Output is correct
3 Correct 15 ms 14848 KB Output is correct
4 Correct 15 ms 14684 KB Output is correct
5 Correct 14 ms 14852 KB Output is correct
6 Correct 15 ms 14812 KB Output is correct
7 Correct 14 ms 14684 KB Output is correct
8 Correct 14 ms 14808 KB Output is correct
9 Correct 15 ms 14684 KB Output is correct
10 Correct 15 ms 14856 KB Output is correct
11 Correct 15 ms 14936 KB Output is correct
12 Correct 15 ms 14684 KB Output is correct
13 Correct 15 ms 14684 KB Output is correct
14 Correct 14 ms 14684 KB Output is correct

Subtask #2
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 14680 KB Output is correct
2 Correct 16 ms 14684 KB Output is correct
3 Correct 15 ms 14848 KB Output is correct
4 Correct 15 ms 14684 KB Output is correct
5 Correct 14 ms 14852 KB Output is correct
6 Correct 15 ms 14812 KB Output is correct
7 Correct 14 ms 14684 KB Output is correct
8 Correct 14 ms 14808 KB Output is correct
9 Correct 15 ms 14684 KB Output is correct
10 Correct 15 ms 14856 KB Output is correct
11 Correct 15 ms 14936 KB Output is correct
12 Correct 15 ms 14684 KB Output is correct
13 Correct 15 ms 14684 KB Output is correct
14 Correct 14 ms 14684 KB Output is correct
15 Correct 112 ms 23364 KB Output is correct
16 Correct 114 ms 23380 KB Output is correct
17 Correct 123 ms 23564 KB Output is correct
18 Correct 38 ms 23540 KB Output is correct
19 Correct 38 ms 23516 KB Output is correct
20 Correct 37 ms 23520 KB Output is correct
21 Correct 160 ms 23580 KB Output is correct
22 Correct 363 ms 23628 KB Output is correct
23 Correct 412 ms 23640 KB Output is correct
24 Correct 259 ms 23576 KB Output is correct
25 Correct 247 ms 23708 KB Output is correct
26 Correct 100 ms 23436 KB Output is correct
27 Correct 117 ms 23380 KB Output is correct
28 Correct 136 ms 23616 KB Output is correct
29 Correct 162 ms 23580 KB Output is correct
30 Correct 153 ms 23380 KB Output is correct
31 Correct 106 ms 23452 KB Output is correct
32 Correct 200 ms 23424 KB Output is correct
33 Correct 103 ms 23480 KB Output is correct

Subtask #3
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 112 ms 23364 KB Output is correct
2 Correct 114 ms 23380 KB Output is correct
3 Correct 123 ms 23564 KB Output is correct
4 Correct 38 ms 23540 KB Output is correct
5 Correct 38 ms 23516 KB Output is correct
6 Correct 37 ms 23520 KB Output is correct
7 Correct 160 ms 23580 KB Output is correct
8 Correct 363 ms 23628 KB Output is correct
9 Correct 412 ms 23640 KB Output is correct
10 Correct 259 ms 23576 KB Output is correct
11 Correct 247 ms 23708 KB Output is correct
12 Correct 100 ms 23436 KB Output is correct
13 Correct 117 ms 23380 KB Output is correct
14 Correct 136 ms 23616 KB Output is correct
15 Correct 162 ms 23580 KB Output is correct
16 Correct 153 ms 23380 KB Output is correct
17 Correct 106 ms 23452 KB Output is correct
18 Correct 200 ms 23424 KB Output is correct
19 Correct 103 ms 23480 KB Output is correct
20 Correct 15 ms 14680 KB Output is correct
21 Correct 16 ms 14684 KB Output is correct
22 Correct 15 ms 14848 KB Output is correct
23 Correct 15 ms 14684 KB Output is correct
24 Correct 14 ms 14852 KB Output is correct
25 Correct 15 ms 14812 KB Output is correct
26 Correct 14 ms 14684 KB Output is correct
27 Correct 14 ms 14808 KB Output is correct
28 Correct 15 ms 14684 KB Output is correct
29 Correct 15 ms 14856 KB Output is correct
30 Correct 15 ms 14936 KB Output is correct
31 Correct 15 ms 14684 KB Output is correct
32 Correct 15 ms 14684 KB Output is correct
33 Correct 14 ms 14684 KB Output is correct
34 Execution timed out 1014 ms 42632 KB Time limit exceeded
35 Halted 0 ms 0 KB -