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Submission #347959

# Submission time Handle Problem Language Result Execution time Memory
347959 2021-01-13T22:13:44 Z luciocf Hedgehog Daniyar and Algorithms (IZhO19_sortbooks) C++14
100 / 100
 2864 ms 88856 KB 
#include <bits/stdc++.h>
 
#define ff first
#define ss second
 
using namespace std;

typedef long long ll;
 
const int maxn = 1e6+10;
const int inf = 1e9+10;
 
int n;
int a[maxn];

int ans[maxn];

struct Query
{
	int l, r, k;
	int ind;
} qry[maxn];
 
struct SegmentTree
{
	ll tree[4*maxn];
	ll lazy[4*maxn];

	void build(int node, int l, int r)
	{
		if (l == r)
		{
			tree[node] = a[l];
			return;
		}

		int mid = (l+r)>>1;

		build(2*node, l, mid); build(2*node+1, mid+1, r);

		tree[node] = max(tree[2*node], tree[2*node+1]);
	}

	void flush(int node, int l, int r)
	{
		if (!lazy[node]) return;

		if (l != r)
			lazy[2*node] += lazy[node], lazy[2*node+1] += lazy[node];

		tree[node] += lazy[node];
		lazy[node] = 0;
	}

	void upd(int node, int l, int r, int a, int b, int v)
	{
		flush(node, l, r);
		if (l > r || l > b || r < a) return;
		if (l >= a && r <= b)
		{
			lazy[node] = 1ll*v;
			flush(node, l, r);
			return;
		}

		int mid = (l+r)>>1;

		upd(2*node, l, mid, a, b, v); upd(2*node+1, mid+1, r, a, b, v);

		tree[node] = max(tree[2*node], tree[2*node+1]);
	}

	int query(int node, int l, int r, int a, int b)
	{
		flush(node, l, r);
		if (l > b || r < a) return 0;
		if (l >= a && r <= b) return tree[node];

		int mid = (l+r)>>1;

		return max(query(2*node, l, mid, a, b), query(2*node+1, mid+1, r, a, b));
	}
} seg;

int main(void)
{
	int m;
	scanf("%d %d", &n, &m);
 
	for (int i = 1; i <= n; i++)
		scanf("%d", &a[i]);
 
	seg.build(1, 1, n);
 
	for (int i = 1; i <= m; i++)
	{
		scanf("%d %d %d", &qry[i].l, &qry[i].r, &qry[i].k);
		qry[i].ind = i;
	}

	sort(qry+1, qry+m+1, [&] (Query a, Query b) {return a.l > b.l;});

	int ptr = n+1;
	stack<int> stk;

	for (int i = 1; i <= m; i++)
	{
		int l = qry[i].l, r = qry[i].r, k = qry[i].k;

		while (ptr > l)
		{
			ptr--;
			seg.upd(1, 1, n, ptr, ptr, -a[ptr]);

			while (stk.size() && a[ptr] > a[stk.top()])
			{
				int ind = stk.top(); stk.pop();

				seg.upd(1, 1, n, ind, ind, a[ind]);
				seg.upd(1, 1, n, ind+1, (stk.size() ? stk.top()-1 : n), -a[ind]);
			}

			seg.upd(1, 1, n, ptr+1, (stk.size() ? stk.top()-1 : n), a[ptr]);
			stk.push(ptr);
		}

		if (seg.query(1, 1, n, l, r) > k) ans[qry[i].ind] = 0;
		else ans[qry[i].ind] = 1;
	}

	for (int i = 1; i <= m; i++)
		printf("%d\n", ans[i]);
}

Compilation message

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:88:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   88 |  scanf("%d %d", &n, &m);
      |  ~~~~~^~~~~~~~~~~~~~~~~
sortbooks.cpp:91:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   91 |   scanf("%d", &a[i]);
      |   ~~~~~^~~~~~~~~~~~~
sortbooks.cpp:97:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   97 |   scanf("%d %d %d", &qry[i].l, &qry[i].r, &qry[i].k);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 5 ms 492 KB Output is correct
12 Correct 8 ms 748 KB Output is correct
13 Correct 10 ms 748 KB Output is correct
14 Correct 9 ms 748 KB Output is correct
15 Correct 9 ms 748 KB Output is correct
16 Correct 8 ms 896 KB Output is correct
17 Correct 5 ms 620 KB Output is correct
18 Correct 7 ms 748 KB Output is correct

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2864 ms 58612 KB Output is correct
2 Correct 2826 ms 58888 KB Output is correct
3 Correct 2807 ms 58796 KB Output is correct
4 Correct 2842 ms 58680 KB Output is correct
5 Correct 2114 ms 58768 KB Output is correct

Subtask #4
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 206 ms 7020 KB Output is correct
2 Correct 199 ms 7020 KB Output is correct
3 Correct 157 ms 6892 KB Output is correct
4 Correct 152 ms 6892 KB Output is correct
5 Correct 154 ms 7020 KB Output is correct
6 Correct 141 ms 6912 KB Output is correct
7 Correct 143 ms 6916 KB Output is correct
8 Correct 172 ms 7020 KB Output is correct
9 Correct 51 ms 2540 KB Output is correct
10 Correct 171 ms 7020 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 5 ms 492 KB Output is correct
12 Correct 8 ms 748 KB Output is correct
13 Correct 10 ms 748 KB Output is correct
14 Correct 9 ms 748 KB Output is correct
15 Correct 9 ms 748 KB Output is correct
16 Correct 8 ms 896 KB Output is correct
17 Correct 5 ms 620 KB Output is correct
18 Correct 7 ms 748 KB Output is correct
19 Correct 471 ms 13676 KB Output is correct
20 Correct 470 ms 13676 KB Output is correct
21 Correct 435 ms 13676 KB Output is correct
22 Correct 422 ms 13676 KB Output is correct
23 Correct 423 ms 13676 KB Output is correct
24 Correct 316 ms 13548 KB Output is correct
25 Correct 310 ms 13420 KB Output is correct
26 Correct 337 ms 13676 KB Output is correct
27 Correct 344 ms 13420 KB Output is correct
28 Correct 338 ms 13420 KB Output is correct
29 Correct 347 ms 13420 KB Output is correct
30 Correct 346 ms 13548 KB Output is correct
31 Correct 343 ms 13420 KB Output is correct
32 Correct 349 ms 13548 KB Output is correct
33 Correct 356 ms 13468 KB Output is correct
34 Correct 309 ms 13420 KB Output is correct
35 Correct 301 ms 13420 KB Output is correct
36 Correct 309 ms 13420 KB Output is correct
37 Correct 301 ms 13420 KB Output is correct
38 Correct 303 ms 13420 KB Output is correct
39 Correct 348 ms 13676 KB Output is correct
40 Correct 245 ms 8940 KB Output is correct
41 Correct 359 ms 13676 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 5 ms 492 KB Output is correct
12 Correct 8 ms 748 KB Output is correct
13 Correct 10 ms 748 KB Output is correct
14 Correct 9 ms 748 KB Output is correct
15 Correct 9 ms 748 KB Output is correct
16 Correct 8 ms 896 KB Output is correct
17 Correct 5 ms 620 KB Output is correct
18 Correct 7 ms 748 KB Output is correct
19 Correct 2864 ms 58612 KB Output is correct
20 Correct 2826 ms 58888 KB Output is correct
21 Correct 2807 ms 58796 KB Output is correct
22 Correct 2842 ms 58680 KB Output is correct
23 Correct 2114 ms 58768 KB Output is correct
24 Correct 206 ms 7020 KB Output is correct
25 Correct 199 ms 7020 KB Output is correct
26 Correct 157 ms 6892 KB Output is correct
27 Correct 152 ms 6892 KB Output is correct
28 Correct 154 ms 7020 KB Output is correct
29 Correct 141 ms 6912 KB Output is correct
30 Correct 143 ms 6916 KB Output is correct
31 Correct 172 ms 7020 KB Output is correct
32 Correct 51 ms 2540 KB Output is correct
33 Correct 171 ms 7020 KB Output is correct
34 Correct 471 ms 13676 KB Output is correct
35 Correct 470 ms 13676 KB Output is correct
36 Correct 435 ms 13676 KB Output is correct
37 Correct 422 ms 13676 KB Output is correct
38 Correct 423 ms 13676 KB Output is correct
39 Correct 316 ms 13548 KB Output is correct
40 Correct 310 ms 13420 KB Output is correct
41 Correct 337 ms 13676 KB Output is correct
42 Correct 344 ms 13420 KB Output is correct
43 Correct 338 ms 13420 KB Output is correct
44 Correct 347 ms 13420 KB Output is correct
45 Correct 346 ms 13548 KB Output is correct
46 Correct 343 ms 13420 KB Output is correct
47 Correct 349 ms 13548 KB Output is correct
48 Correct 356 ms 13468 KB Output is correct
49 Correct 309 ms 13420 KB Output is correct
50 Correct 301 ms 13420 KB Output is correct
51 Correct 309 ms 13420 KB Output is correct
52 Correct 301 ms 13420 KB Output is correct
53 Correct 303 ms 13420 KB Output is correct
54 Correct 348 ms 13676 KB Output is correct
55 Correct 245 ms 8940 KB Output is correct
56 Correct 359 ms 13676 KB Output is correct
57 Correct 2775 ms 74716 KB Output is correct
58 Correct 2813 ms 72400 KB Output is correct
59 Correct 2632 ms 71660 KB Output is correct
60 Correct 2642 ms 72428 KB Output is correct
61 Correct 2630 ms 71568 KB Output is correct
62 Correct 2617 ms 72376 KB Output is correct
63 Correct 1736 ms 71036 KB Output is correct
64 Correct 1741 ms 71040 KB Output is correct
65 Correct 1947 ms 72120 KB Output is correct
66 Correct 1941 ms 75244 KB Output is correct
67 Correct 1969 ms 74092 KB Output is correct
68 Correct 2021 ms 75244 KB Output is correct
69 Correct 2020 ms 75004 KB Output is correct
70 Correct 2005 ms 71616 KB Output is correct
71 Correct 2031 ms 75372 KB Output is correct
72 Correct 2028 ms 72172 KB Output is correct
73 Correct 1682 ms 70528 KB Output is correct
74 Correct 1685 ms 71020 KB Output is correct
75 Correct 1687 ms 70508 KB Output is correct
76 Correct 1687 ms 88856 KB Output is correct
77 Correct 1680 ms 71020 KB Output is correct
78 Correct 2063 ms 79340 KB Output is correct
79 Correct 1277 ms 61804 KB Output is correct
80 Correct 2209 ms 84508 KB Output is correct