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Submission #103989

# Submission time Handle Problem Language Result Execution time Memory
103989 2019-04-03T14:12:11 Z igba Fortune Telling 2 (JOI14_fortune_telling2) C++17
35 / 100
 3000 ms 198092 KB 
#include <bits/stdc++.h>

using namespace std;
const int MAXN = 2 * 100100, MAXK = 2 * 100100, MAXA = 1e9 + 1e4;
int n, k, a[MAXN], b[MAXN], t[MAXK];
long long ans = 0;

struct no
{
	int cnt;
	no *l, *r;
	no(int cnt = 0) : cnt(cnt), l(nullptr), r(nullptr)
	{}
};
inline int getcnt(no *n) { return (n ? n->cnt : 0); }

no* upd(no* n, int pos, int val = 1, int beg = 1, int end = MAXA)
{
	if(beg == end)
		return new no(getcnt(n) + val);
	no* ans = (n ? new no(*n) : new no());
	int mid = (beg + end) >> 1;
	if(pos <= mid)
		ans->l = upd(ans->l, pos, val, beg, mid);
	else
		ans->r = upd(ans->r, pos, val, mid + 1, end);
	ans->cnt = getcnt(ans->l) + getcnt(ans->r);
	return ans;
}

int get(no* n, int pos, int beg = 1, int end = MAXA)
{
	if(!n)
		return 0;
	int mid = (beg + end) >> 1;
	if(pos <= mid)
		return get(n->l, pos, beg, mid) + getcnt(n->r);
	return get(n->r, pos, mid + 1, end);
}

no* pseg[MAXK];

int bs(int x, int y)
{
	if(x < y)
		swap(x, y);
	int beg = 0, end = k, mid, p, q, w, z;
	w = get(pseg[end], y - 1);
	z = get(pseg[end], x - 1);
	while(beg < end)
	{
		mid = (beg + end + 1) >> 1;
		p = w - get(pseg[mid - 1], y - 1);
		q = z - get(pseg[mid - 1], x - 1);
		if(p - q > 0)
			beg = mid;			
		else
			end = mid - 1;
	}
	return beg;
}

int main()
{
	pseg[0] = nullptr;
	scanf("%d %d", &n, &k);
	for(int i = 1; i <= n; ++i)
		scanf("%d %d", &a[i], &b[i]);
	for(int i = 1; i <= k; ++i)
		scanf("%d", &t[i]), pseg[i] = upd(pseg[i - 1], t[i]);
	for(int i = 1, swaps, j; i <= n; ++i)
	{
		/*for(j = k, swaps = 0; j >= 1; --j)
			if(min(a[i], b[i]) <= t[j] && t[j] < max(a[i], b[i]))
				break;*/
		j = bs(a[i], b[i]), swaps = 0;
		if(min(a[i], b[i]) <= t[j] && t[j] < max(a[i], b[i]))
			swaps += (a[i] < b[i]);
		swaps += get(pseg[k], max(a[i], b[i]) - 1) - get(pseg[j], max(a[i], b[i]) - 1);
		ans += (swaps % 2 ? b[i] : a[i]);
	}
	printf("%lld\n", ans);
}

Compilation message

fortune_telling2.cpp: In function 'int main()':
fortune_telling2.cpp:66:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &k);
  ~~~~~^~~~~~~~~~~~~~~~~
fortune_telling2.cpp:68:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d", &a[i], &b[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~
fortune_telling2.cpp:70:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &t[i]), pseg[i] = upd(pseg[i - 1], t[i]);
   ~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 6 ms 1280 KB Output is correct
3 Correct 8 ms 1408 KB Output is correct
4 Correct 6 ms 1348 KB Output is correct
5 Correct 6 ms 1408 KB Output is correct
6 Correct 6 ms 1408 KB Output is correct
7 Correct 6 ms 1280 KB Output is correct
8 Correct 7 ms 1408 KB Output is correct
9 Correct 7 ms 1380 KB Output is correct
10 Correct 7 ms 1280 KB Output is correct
11 Correct 6 ms 1356 KB Output is correct
12 Correct 7 ms 1408 KB Output is correct
13 Correct 6 ms 1408 KB Output is correct

Subtask #2
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 6 ms 1280 KB Output is correct
3 Correct 8 ms 1408 KB Output is correct
4 Correct 6 ms 1348 KB Output is correct
5 Correct 6 ms 1408 KB Output is correct
6 Correct 6 ms 1408 KB Output is correct
7 Correct 6 ms 1280 KB Output is correct
8 Correct 7 ms 1408 KB Output is correct
9 Correct 7 ms 1380 KB Output is correct
10 Correct 7 ms 1280 KB Output is correct
11 Correct 6 ms 1356 KB Output is correct
12 Correct 7 ms 1408 KB Output is correct
13 Correct 6 ms 1408 KB Output is correct
14 Correct 61 ms 10264 KB Output is correct
15 Correct 175 ms 20132 KB Output is correct
16 Correct 245 ms 30180 KB Output is correct
17 Correct 385 ms 40016 KB Output is correct
18 Correct 343 ms 39804 KB Output is correct
19 Correct 332 ms 39932 KB Output is correct
20 Correct 393 ms 39928 KB Output is correct
21 Correct 252 ms 39820 KB Output is correct
22 Correct 257 ms 39800 KB Output is correct
23 Correct 296 ms 39880 KB Output is correct
24 Correct 265 ms 39892 KB Output is correct
25 Correct 275 ms 39928 KB Output is correct
26 Correct 244 ms 39928 KB Output is correct
27 Correct 277 ms 39928 KB Output is correct
28 Correct 253 ms 39928 KB Output is correct
29 Correct 382 ms 39928 KB Output is correct

Subtask #3
0 / 65.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1280 KB Output is correct
2 Correct 6 ms 1280 KB Output is correct
3 Correct 8 ms 1408 KB Output is correct
4 Correct 6 ms 1348 KB Output is correct
5 Correct 6 ms 1408 KB Output is correct
6 Correct 6 ms 1408 KB Output is correct
7 Correct 6 ms 1280 KB Output is correct
8 Correct 7 ms 1408 KB Output is correct
9 Correct 7 ms 1380 KB Output is correct
10 Correct 7 ms 1280 KB Output is correct
11 Correct 6 ms 1356 KB Output is correct
12 Correct 7 ms 1408 KB Output is correct
13 Correct 6 ms 1408 KB Output is correct
14 Correct 61 ms 10264 KB Output is correct
15 Correct 175 ms 20132 KB Output is correct
16 Correct 245 ms 30180 KB Output is correct
17 Correct 385 ms 40016 KB Output is correct
18 Correct 343 ms 39804 KB Output is correct
19 Correct 332 ms 39932 KB Output is correct
20 Correct 393 ms 39928 KB Output is correct
21 Correct 252 ms 39820 KB Output is correct
22 Correct 257 ms 39800 KB Output is correct
23 Correct 296 ms 39880 KB Output is correct
24 Correct 265 ms 39892 KB Output is correct
25 Correct 275 ms 39928 KB Output is correct
26 Correct 244 ms 39928 KB Output is correct
27 Correct 277 ms 39928 KB Output is correct
28 Correct 253 ms 39928 KB Output is correct
29 Correct 382 ms 39928 KB Output is correct
30 Correct 784 ms 196532 KB Output is correct
31 Correct 1307 ms 196840 KB Output is correct
32 Correct 1935 ms 197368 KB Output is correct
33 Execution timed out 3103 ms 198092 KB Time limit exceeded
34 Halted 0 ms 0 KB -