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답안 #103050

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
103050 2019-03-28T23:09:46 Z luciocf Pinball (JOI14_pinball) C++14
100 / 100
 703 ms 30968 KB 
#include <bits/stdc++.h>

using namespace std;

const int maxn = 3e5+10;
const long long inf = 2e18+10;

typedef long long ll;

int ind, m;
int l[maxn], r[maxn], p[maxn], d[maxn];

ll tree[4*maxn];

ll dp[2][maxn];

map<int, int> mp;

void compress(int n)
{
	for (int i = 1; i <= n; i++)
		mp[l[i]] = mp[r[i]] = mp[p[i]] = 0;

	mp[1] = 0;
	mp[m] = 0;

	for (auto &x: mp)
		x.second = ++ind;

	for (int i = 1; i <= n; i++)
		l[i] = mp[l[i]], r[i] = mp[r[i]], p[i] = mp[p[i]];

	m = mp[m];
}

void init(void)
{
	for (int i = 0; i < 4*maxn; i++)
		tree[i] = inf;
}

void upd(int node, int l, int r, int pos, ll v)
{
	if (l == r)
	{
		tree[node] = min(tree[node], v);
		return;
	}

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

	if (pos <= mid) upd(2*node, l, mid, pos, v);
	else upd(2*node+1, mid+1, r, pos, v);

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

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

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

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

int main(void)
{
	int n;
	scanf("%d %d", &n, &m);

	for (int i = 1; i <= n; i++)
	{
		scanf("%d %d %d %d", &l[i], &r[i], &p[i], &d[i]);

		dp[0][i] = dp[1][i] = inf;
	}

	compress(n);
	init();

	for (int i = 1; i <= n; i++)
	{
		if (l[i] == 1) dp[0][i] = d[i];
		else dp[0][i] = 1ll*d[i] + query(1, 1, ind, l[i], r[i]);

		upd(1, 1, ind, p[i], dp[0][i]);
	}

	init();

	for (int i = 1; i <= n; i++)
	{
		if (r[i] == m) dp[1][i] = d[i];
		else dp[1][i] = 1ll*d[i] + query(1, 1, ind, l[i], r[i]);

		upd(1, 1, ind, p[i], dp[1][i]);
	}

	ll ans = inf;
	for (int i = 1; i <= n; i++)
		if (dp[0][i] < inf && dp[1][i] < inf)
			ans = min(ans, dp[0][i]+dp[1][i]-1ll*d[i]);

	if (ans == inf) printf("-1\n");
	else printf("%lld\n", ans);
}

Compilation message

pinball.cpp: In function 'int main()':
pinball.cpp:71:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~~
pinball.cpp:75:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d %d", &l[i], &r[i], &p[i], &d[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9728 KB Output is correct
2 Correct 11 ms 9728 KB Output is correct
3 Correct 13 ms 9600 KB Output is correct
4 Correct 12 ms 9728 KB Output is correct
5 Correct 11 ms 9728 KB Output is correct
6 Correct 11 ms 9728 KB Output is correct
7 Correct 11 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9728 KB Output is correct
2 Correct 11 ms 9728 KB Output is correct
3 Correct 13 ms 9600 KB Output is correct
4 Correct 12 ms 9728 KB Output is correct
5 Correct 11 ms 9728 KB Output is correct
6 Correct 11 ms 9728 KB Output is correct
7 Correct 11 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct
9 Correct 11 ms 9728 KB Output is correct
10 Correct 12 ms 9728 KB Output is correct
11 Correct 13 ms 9728 KB Output is correct
12 Correct 12 ms 9856 KB Output is correct
13 Correct 11 ms 9856 KB Output is correct
14 Correct 11 ms 9856 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9728 KB Output is correct
2 Correct 11 ms 9728 KB Output is correct
3 Correct 13 ms 9600 KB Output is correct
4 Correct 12 ms 9728 KB Output is correct
5 Correct 11 ms 9728 KB Output is correct
6 Correct 11 ms 9728 KB Output is correct
7 Correct 11 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct
9 Correct 11 ms 9728 KB Output is correct
10 Correct 12 ms 9728 KB Output is correct
11 Correct 13 ms 9728 KB Output is correct
12 Correct 12 ms 9856 KB Output is correct
13 Correct 11 ms 9856 KB Output is correct
14 Correct 11 ms 9856 KB Output is correct
15 Correct 11 ms 9728 KB Output is correct
16 Correct 10 ms 9856 KB Output is correct
17 Correct 12 ms 9856 KB Output is correct
18 Correct 11 ms 9856 KB Output is correct
19 Correct 12 ms 9984 KB Output is correct
20 Correct 12 ms 9856 KB Output is correct
21 Correct 11 ms 9856 KB Output is correct
22 Correct 12 ms 9856 KB Output is correct
23 Correct 12 ms 9856 KB Output is correct
24 Correct 12 ms 9984 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9728 KB Output is correct
2 Correct 11 ms 9728 KB Output is correct
3 Correct 13 ms 9600 KB Output is correct
4 Correct 12 ms 9728 KB Output is correct
5 Correct 11 ms 9728 KB Output is correct
6 Correct 11 ms 9728 KB Output is correct
7 Correct 11 ms 9728 KB Output is correct
8 Correct 11 ms 9728 KB Output is correct
9 Correct 11 ms 9728 KB Output is correct
10 Correct 12 ms 9728 KB Output is correct
11 Correct 13 ms 9728 KB Output is correct
12 Correct 12 ms 9856 KB Output is correct
13 Correct 11 ms 9856 KB Output is correct
14 Correct 11 ms 9856 KB Output is correct
15 Correct 11 ms 9728 KB Output is correct
16 Correct 10 ms 9856 KB Output is correct
17 Correct 12 ms 9856 KB Output is correct
18 Correct 11 ms 9856 KB Output is correct
19 Correct 12 ms 9984 KB Output is correct
20 Correct 12 ms 9856 KB Output is correct
21 Correct 11 ms 9856 KB Output is correct
22 Correct 12 ms 9856 KB Output is correct
23 Correct 12 ms 9856 KB Output is correct
24 Correct 12 ms 9984 KB Output is correct
25 Correct 35 ms 10880 KB Output is correct
26 Correct 94 ms 14072 KB Output is correct
27 Correct 303 ms 19236 KB Output is correct
28 Correct 187 ms 16888 KB Output is correct
29 Correct 202 ms 17524 KB Output is correct
30 Correct 262 ms 17660 KB Output is correct
31 Correct 547 ms 24684 KB Output is correct
32 Correct 436 ms 22648 KB Output is correct
33 Correct 60 ms 13816 KB Output is correct
34 Correct 280 ms 20444 KB Output is correct
35 Correct 347 ms 30840 KB Output is correct
36 Correct 703 ms 30968 KB Output is correct
37 Correct 635 ms 30940 KB Output is correct
38 Correct 523 ms 30968 KB Output is correct