oj.uz

Submission #660033

# Submission time Handle Problem Language Result Execution time Memory
660033 2022-11-20T09:07:50 Z ymm The short shank; Redemption (BOI21_prison) C++17
100 / 100
 1784 ms 119016 KB 
#include <bits/stdc++.h>
#define Loop(x,l,r) for (ll x = (l); x < (ll)(r); ++x)
#define LoopR(x,l,r) for (ll x = (r)-1; x >= (ll)(l); --x)
typedef long long ll;
typedef std::pair<int, int> pii;
typedef std::pair<ll , ll > pll;
using namespace std;

const int N = 1<<21;
int a[N];
int n, d, t;

int fen[N];
void fen_add(int i, int x)
{
	++i;
	while (i < N) {
		fen[i] += x;
		i += i&-i;
	}
}
int fen_get(int r)
{
	int ans = 0;
	while (r) {
		ans += fen[r];
		r -= r&-r;
	}
	return ans;
}
int fen_get(int l, int r) { return fen_get(r) - fen_get(l); }

int l_of[N];
int r_of[N];
int mn_of[N];
int nxt_less[N];

int merge(int l, int m, int r, bool dry)
{
	int i = mn_of[l];
	int j = min(r, nxt_less[i]);
	// t - x == a[i]
	int pnt = t - a[i] + 1;
	pnt = min(j, pnt);
	pnt = max(m, pnt);
	int pre_good = fen_get(m, pnt);
	if (!dry)
		fen_add(m, (pnt - m) - pre_good);
	return (pnt - m) - pre_good;
}

int main(int argc, char **argv)
{
	cin.tie(0) -> sync_with_stdio(false);
	cin >> n >> d >> t;
	int lst = 1e9+10;
	Loop (i,0,n) {
		cin >> a[i];
		a[i] -= i;
	}
	vector<int> st;
	LoopR (i,0,n) {
		while (st.size() && a[i] < a[st.back()])
			st.pop_back();
		nxt_less[i] = st.size()? st.back(): n;
		st.push_back(i);
	}
	Loop (i,0,n) {
		r_of[i] = i+1;
		l_of[i+1] = i;
		mn_of[i] = i;
	}
	l_of[0] = n+1;
	r_of[n] = n+1;
	l_of[n+1] = n+1;
	r_of[n+1] = n+1;
	int ans = 0;
	Loop (i,0,n) {
		int tmp = a[i]+i <= t;
		ans += tmp;
		fen_add(i, tmp);
	}
	priority_queue<pair<int, pii>> pq;
	Loop (i,1,n) {
		int x = merge(i-1, i, i+1, 1);
		pq.push({-x, {i-1, i+1}});
	}
	LoopR (_,d,n-1) {
		assert(pq.size());
		auto [x, foo] = pq.top();
		auto [l, r] = foo;
		pq.pop();
		x = -x;
		int m = r_of[l];
		if (m == n+1 || m != l_of[r]) {
			++_;
			continue;
		}
		ans += x;
		merge(l, m, r, 0);
		r_of[l] = r;
		l_of[r] = l;
		l_of[m] = r_of[m] = n+1;
		if (a[mn_of[l]] >= a[mn_of[m]])
			mn_of[l] = mn_of[m];
		int l2 = l_of[l];
		int r2 = r_of[r];
		if (l2 != n+1) {
			int x = merge(l2, l, r, 1);
			pq.push({-x, {l2, r}});
		}
		if (r2 != n+1) {
			int x = merge(l, r, r2, 1);
			pq.push({-x, {l, r2}});
		}
	}
	cout << ans << '\n';
}

Compilation message

prison.cpp: In function 'int main(int, char**)':
prison.cpp:56:6: warning: unused variable 'lst' [-Wunused-variable]
   56 |  int lst = 1e9+10;
      |      ^~~

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 388 KB Output is correct
2 Correct 397 ms 24480 KB Output is correct
3 Correct 395 ms 24508 KB Output is correct
4 Correct 381 ms 24688 KB Output is correct
5 Correct 362 ms 24608 KB Output is correct
6 Correct 358 ms 25140 KB Output is correct
7 Correct 289 ms 18320 KB Output is correct
8 Correct 382 ms 25268 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 3 ms 596 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 3 ms 596 KB Output is correct
27 Correct 3 ms 596 KB Output is correct
28 Correct 3 ms 596 KB Output is correct
29 Correct 3 ms 596 KB Output is correct
30 Correct 3 ms 596 KB Output is correct
31 Correct 3 ms 596 KB Output is correct
32 Correct 2 ms 596 KB Output is correct
33 Correct 3 ms 596 KB Output is correct
34 Correct 3 ms 652 KB Output is correct
35 Correct 3 ms 596 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 55 ms 3776 KB Output is correct
3 Correct 55 ms 3788 KB Output is correct
4 Correct 42 ms 3980 KB Output is correct
5 Correct 37 ms 3788 KB Output is correct
6 Correct 38 ms 3828 KB Output is correct
7 Correct 48 ms 3896 KB Output is correct
8 Correct 49 ms 3964 KB Output is correct
9 Correct 36 ms 3788 KB Output is correct
10 Correct 43 ms 3920 KB Output is correct

Subtask #5
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 3 ms 596 KB Output is correct
24 Correct 3 ms 596 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 3 ms 596 KB Output is correct
27 Correct 3 ms 596 KB Output is correct
28 Correct 3 ms 596 KB Output is correct
29 Correct 3 ms 596 KB Output is correct
30 Correct 3 ms 596 KB Output is correct
31 Correct 3 ms 596 KB Output is correct
32 Correct 2 ms 596 KB Output is correct
33 Correct 3 ms 596 KB Output is correct
34 Correct 3 ms 652 KB Output is correct
35 Correct 3 ms 596 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 55 ms 3776 KB Output is correct
38 Correct 55 ms 3788 KB Output is correct
39 Correct 42 ms 3980 KB Output is correct
40 Correct 37 ms 3788 KB Output is correct
41 Correct 38 ms 3828 KB Output is correct
42 Correct 48 ms 3896 KB Output is correct
43 Correct 49 ms 3964 KB Output is correct
44 Correct 36 ms 3788 KB Output is correct
45 Correct 43 ms 3920 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 4 ms 596 KB Output is correct
58 Correct 4 ms 596 KB Output is correct
59 Correct 4 ms 596 KB Output is correct
60 Correct 3 ms 596 KB Output is correct
61 Correct 3 ms 664 KB Output is correct
62 Correct 4 ms 596 KB Output is correct
63 Correct 4 ms 596 KB Output is correct
64 Correct 3 ms 596 KB Output is correct
65 Correct 3 ms 596 KB Output is correct
66 Correct 3 ms 596 KB Output is correct
67 Correct 3 ms 596 KB Output is correct
68 Correct 3 ms 596 KB Output is correct
69 Correct 2 ms 596 KB Output is correct
70 Correct 0 ms 340 KB Output is correct
71 Correct 56 ms 3744 KB Output is correct
72 Correct 55 ms 3788 KB Output is correct
73 Correct 50 ms 3908 KB Output is correct
74 Correct 43 ms 3744 KB Output is correct
75 Correct 39 ms 3768 KB Output is correct
76 Correct 50 ms 3944 KB Output is correct
77 Correct 51 ms 3964 KB Output is correct
78 Correct 38 ms 3824 KB Output is correct
79 Correct 53 ms 3948 KB Output is correct
80 Correct 52 ms 3788 KB Output is correct
81 Correct 45 ms 3788 KB Output is correct
82 Correct 43 ms 3752 KB Output is correct
83 Correct 49 ms 3812 KB Output is correct
84 Correct 51 ms 3904 KB Output is correct
85 Correct 38 ms 3820 KB Output is correct
86 Correct 36 ms 3980 KB Output is correct
87 Correct 33 ms 3964 KB Output is correct
88 Correct 37 ms 3792 KB Output is correct
89 Correct 40 ms 3796 KB Output is correct
90 Correct 32 ms 3964 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 388 KB Output is correct
13 Correct 397 ms 24480 KB Output is correct
14 Correct 395 ms 24508 KB Output is correct
15 Correct 381 ms 24688 KB Output is correct
16 Correct 362 ms 24608 KB Output is correct
17 Correct 358 ms 25140 KB Output is correct
18 Correct 289 ms 18320 KB Output is correct
19 Correct 382 ms 25268 KB Output is correct
20 Correct 0 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 3 ms 596 KB Output is correct
32 Correct 3 ms 596 KB Output is correct
33 Correct 3 ms 596 KB Output is correct
34 Correct 3 ms 596 KB Output is correct
35 Correct 3 ms 596 KB Output is correct
36 Correct 3 ms 596 KB Output is correct
37 Correct 3 ms 596 KB Output is correct
38 Correct 3 ms 596 KB Output is correct
39 Correct 3 ms 596 KB Output is correct
40 Correct 2 ms 596 KB Output is correct
41 Correct 3 ms 596 KB Output is correct
42 Correct 3 ms 652 KB Output is correct
43 Correct 3 ms 596 KB Output is correct
44 Correct 0 ms 340 KB Output is correct
45 Correct 55 ms 3776 KB Output is correct
46 Correct 55 ms 3788 KB Output is correct
47 Correct 42 ms 3980 KB Output is correct
48 Correct 37 ms 3788 KB Output is correct
49 Correct 38 ms 3828 KB Output is correct
50 Correct 48 ms 3896 KB Output is correct
51 Correct 49 ms 3964 KB Output is correct
52 Correct 36 ms 3788 KB Output is correct
53 Correct 43 ms 3920 KB Output is correct
54 Correct 1 ms 340 KB Output is correct
55 Correct 1 ms 340 KB Output is correct
56 Correct 1 ms 340 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 340 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 340 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 1 ms 340 KB Output is correct
65 Correct 4 ms 596 KB Output is correct
66 Correct 4 ms 596 KB Output is correct
67 Correct 4 ms 596 KB Output is correct
68 Correct 3 ms 596 KB Output is correct
69 Correct 3 ms 664 KB Output is correct
70 Correct 4 ms 596 KB Output is correct
71 Correct 4 ms 596 KB Output is correct
72 Correct 3 ms 596 KB Output is correct
73 Correct 3 ms 596 KB Output is correct
74 Correct 3 ms 596 KB Output is correct
75 Correct 3 ms 596 KB Output is correct
76 Correct 3 ms 596 KB Output is correct
77 Correct 2 ms 596 KB Output is correct
78 Correct 0 ms 340 KB Output is correct
79 Correct 56 ms 3744 KB Output is correct
80 Correct 55 ms 3788 KB Output is correct
81 Correct 50 ms 3908 KB Output is correct
82 Correct 43 ms 3744 KB Output is correct
83 Correct 39 ms 3768 KB Output is correct
84 Correct 50 ms 3944 KB Output is correct
85 Correct 51 ms 3964 KB Output is correct
86 Correct 38 ms 3824 KB Output is correct
87 Correct 53 ms 3948 KB Output is correct
88 Correct 52 ms 3788 KB Output is correct
89 Correct 45 ms 3788 KB Output is correct
90 Correct 43 ms 3752 KB Output is correct
91 Correct 49 ms 3812 KB Output is correct
92 Correct 51 ms 3904 KB Output is correct
93 Correct 38 ms 3820 KB Output is correct
94 Correct 36 ms 3980 KB Output is correct
95 Correct 33 ms 3964 KB Output is correct
96 Correct 37 ms 3792 KB Output is correct
97 Correct 40 ms 3796 KB Output is correct
98 Correct 32 ms 3964 KB Output is correct
99 Correct 0 ms 340 KB Output is correct
100 Correct 1 ms 340 KB Output is correct
101 Correct 1 ms 340 KB Output is correct
102 Correct 1 ms 340 KB Output is correct
103 Correct 1 ms 340 KB Output is correct
104 Correct 1 ms 468 KB Output is correct
105 Correct 1 ms 340 KB Output is correct
106 Correct 1 ms 340 KB Output is correct
107 Correct 1 ms 340 KB Output is correct
108 Correct 1 ms 340 KB Output is correct
109 Correct 1 ms 340 KB Output is correct
110 Correct 0 ms 340 KB Output is correct
111 Correct 399 ms 24532 KB Output is correct
112 Correct 387 ms 24520 KB Output is correct
113 Correct 380 ms 24792 KB Output is correct
114 Correct 356 ms 24640 KB Output is correct
115 Correct 359 ms 25168 KB Output is correct
116 Correct 287 ms 18364 KB Output is correct
117 Correct 375 ms 25256 KB Output is correct
118 Correct 3 ms 596 KB Output is correct
119 Correct 3 ms 596 KB Output is correct
120 Correct 3 ms 596 KB Output is correct
121 Correct 3 ms 596 KB Output is correct
122 Correct 4 ms 596 KB Output is correct
123 Correct 3 ms 596 KB Output is correct
124 Correct 3 ms 596 KB Output is correct
125 Correct 2 ms 596 KB Output is correct
126 Correct 2 ms 596 KB Output is correct
127 Correct 3 ms 596 KB Output is correct
128 Correct 3 ms 596 KB Output is correct
129 Correct 3 ms 596 KB Output is correct
130 Correct 2 ms 596 KB Output is correct
131 Correct 0 ms 340 KB Output is correct
132 Correct 56 ms 3788 KB Output is correct
133 Correct 54 ms 3860 KB Output is correct
134 Correct 45 ms 3936 KB Output is correct
135 Correct 37 ms 3788 KB Output is correct
136 Correct 38 ms 3788 KB Output is correct
137 Correct 48 ms 3892 KB Output is correct
138 Correct 47 ms 3964 KB Output is correct
139 Correct 35 ms 3820 KB Output is correct
140 Correct 43 ms 3920 KB Output is correct
141 Correct 49 ms 3820 KB Output is correct
142 Correct 46 ms 3788 KB Output is correct
143 Correct 42 ms 3836 KB Output is correct
144 Correct 49 ms 3800 KB Output is correct
145 Correct 42 ms 3812 KB Output is correct
146 Correct 40 ms 3748 KB Output is correct
147 Correct 35 ms 3964 KB Output is correct
148 Correct 35 ms 3964 KB Output is correct
149 Correct 36 ms 3768 KB Output is correct
150 Correct 36 ms 3800 KB Output is correct
151 Correct 32 ms 3992 KB Output is correct
152 Correct 1784 ms 96800 KB Output is correct
153 Correct 1753 ms 116252 KB Output is correct
154 Correct 1735 ms 116068 KB Output is correct
155 Correct 1559 ms 111988 KB Output is correct
156 Correct 1521 ms 104344 KB Output is correct
157 Correct 1503 ms 116224 KB Output is correct
158 Correct 1534 ms 116412 KB Output is correct
159 Correct 1161 ms 115284 KB Output is correct
160 Correct 1060 ms 116444 KB Output is correct
161 Correct 930 ms 118920 KB Output is correct
162 Correct 1198 ms 119016 KB Output is correct