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답안 #527815

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
527815 2022-02-18T12:37:50 Z AriaH Pinball (JOI14_pinball) C++17
100 / 100
 234 ms 27840 KB 
/* I can do this all day */

#pragma GCC optimize("Ofast")

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;
typedef pair < int, int > pii;
typedef pair < ll, ll > pll;

#define F first
#define S second
#define all(x) x.begin(),x.end()
#define Mp make_pair
#define point complex
#define endl '\n'
#define SZ(x) (int)x.size()
#define fast_io ios::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define file_io freopen("input.txt", "r+", stdin); freopen("output.txt", "w+", stdout);
#define mashtali return cout << "Hello, World!", 0;

const int N = 3e5 + 10;
const int LOG = 20;
const ll mod = 1e9 + 7;
const ll inf = 2e18;
const double pi = acos(-1);
const ld eps = 1e-18;
const ld one = 1.;

ll pw(ll a, ll b, ll M, ll ret = 1) { if(a == 0) return 0; a %= M; while(b) { ret = (b & 1? ret * a % M : ret), a = a * a % M, b >>= 1; } return ret % M; }

mt19937 rng(time(nullptr));

ll dis[2][N], seg[2][N << 2];

int LEN, n, L[N], R[N], C[N], cost[N];

vector < int > cm;

inline  int lwr(int x)
{
	return lower_bound(all(cm), x) - cm.begin();
}

void upd(int id, int p, ll x, int v = 1, int tl = 0, int tr = SZ(cm) - 1)
{
	if(tl == tr)
	{
		seg[id][v] = min(seg[id][v], x);
		return;
	}
	int mid = (tl + tr) >> 1;
	if(p <= mid) upd(id, p, x, v << 1, tl, mid);
	else upd(id, p, x, v << 1 | 1, mid + 1, tr);
	seg[id][v] = min(seg[id][v << 1], seg[id][v << 1 | 1]);
}

ll get(int id, int l, int r, int v = 1, int tl = 0, int tr = SZ(cm) - 1)
{
	if(l > tr || r < tl || l > r) return inf;
	if(l <= tl && tr <= r) return seg[id][v];
	int mid = (tl + tr) >> 1;
	return min(get(id, l, r, v << 1, tl, mid), get(id, l, r, v << 1 | 1, mid + 1, tr));
}

int main()
{
	fast_io;
	for(int j = 0; j < 2; j ++) for(int i = 0; i < N << 2; i ++) seg[j][i] = inf;
	cin >> n >> LEN;
	cm.push_back(0);
	cm.push_back(LEN);
	for(int i = 0; i <= n + 1; i ++) dis[0][i] = dis[1][i] = inf;
	for(int i = 1; i <= n; i ++)
	{
		cin >> L[i] >> R[i] >> C[i] >> cost[i];
		cm.push_back(L[i]);
		cm.push_back(R[i]);
		cm.push_back(C[i]);
		if(L[i] == 1)
		{
			dis[0][i] = 0;
		}
		if(R[i] == LEN)
		{
			dis[1][i] = 0;
		}
	}
	sort(all(cm));
	cm.resize(unique(all(cm)) - cm.begin());
	ll tot = inf;
	for(int i = 1; i <= n; i ++)
	{
		L[i] = lwr(L[i]);
		R[i] = lwr(R[i]);
		C[i] = lwr(C[i]);
		///printf("i = %d L = %d R = %d C = %d\n", i, L[i], R[i], C[i]);
		dis[0][i] = min(dis[0][i], get(0, L[i], R[i])) + cost[i];
		dis[1][i] = min(dis[1][i], get(1, L[i], R[i])) + cost[i];
		///printf("i = %d dis0 = %lld dis1 = %lld cost = %d\n", i, dis[0][i], dis[1][i], cost[i]);
		tot = min(tot, dis[0][i] + dis[1][i] - cost[i]);
		upd(0, C[i], dis[0][i]);
		upd(1, C[i], dis[1][i]);
	}
	if(tot >= inf / 2) tot = -1;
	cout << tot;
	return 0;
}

/* check corner case(n = 1?), watch for negetive index or overflow */

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 19100 KB Output is correct
2 Correct 9 ms 19140 KB Output is correct
3 Correct 10 ms 19104 KB Output is correct
4 Correct 9 ms 19020 KB Output is correct
5 Correct 9 ms 19116 KB Output is correct
6 Correct 10 ms 19020 KB Output is correct
7 Correct 8 ms 19148 KB Output is correct
8 Correct 8 ms 19020 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 19100 KB Output is correct
2 Correct 9 ms 19140 KB Output is correct
3 Correct 10 ms 19104 KB Output is correct
4 Correct 9 ms 19020 KB Output is correct
5 Correct 9 ms 19116 KB Output is correct
6 Correct 10 ms 19020 KB Output is correct
7 Correct 8 ms 19148 KB Output is correct
8 Correct 8 ms 19020 KB Output is correct
9 Correct 8 ms 19132 KB Output is correct
10 Correct 8 ms 19084 KB Output is correct
11 Correct 8 ms 19128 KB Output is correct
12 Correct 8 ms 19148 KB Output is correct
13 Correct 8 ms 19148 KB Output is correct
14 Correct 8 ms 19128 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 19100 KB Output is correct
2 Correct 9 ms 19140 KB Output is correct
3 Correct 10 ms 19104 KB Output is correct
4 Correct 9 ms 19020 KB Output is correct
5 Correct 9 ms 19116 KB Output is correct
6 Correct 10 ms 19020 KB Output is correct
7 Correct 8 ms 19148 KB Output is correct
8 Correct 8 ms 19020 KB Output is correct
9 Correct 8 ms 19132 KB Output is correct
10 Correct 8 ms 19084 KB Output is correct
11 Correct 8 ms 19128 KB Output is correct
12 Correct 8 ms 19148 KB Output is correct
13 Correct 8 ms 19148 KB Output is correct
14 Correct 8 ms 19128 KB Output is correct
15 Correct 7 ms 19148 KB Output is correct
16 Correct 8 ms 19092 KB Output is correct
17 Correct 9 ms 19148 KB Output is correct
18 Correct 9 ms 19148 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19128 KB Output is correct
21 Correct 8 ms 19116 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 9 ms 19148 KB Output is correct
24 Correct 12 ms 19148 KB Output is correct

Subtask #4
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 19100 KB Output is correct
2 Correct 9 ms 19140 KB Output is correct
3 Correct 10 ms 19104 KB Output is correct
4 Correct 9 ms 19020 KB Output is correct
5 Correct 9 ms 19116 KB Output is correct
6 Correct 10 ms 19020 KB Output is correct
7 Correct 8 ms 19148 KB Output is correct
8 Correct 8 ms 19020 KB Output is correct
9 Correct 8 ms 19132 KB Output is correct
10 Correct 8 ms 19084 KB Output is correct
11 Correct 8 ms 19128 KB Output is correct
12 Correct 8 ms 19148 KB Output is correct
13 Correct 8 ms 19148 KB Output is correct
14 Correct 8 ms 19128 KB Output is correct
15 Correct 7 ms 19148 KB Output is correct
16 Correct 8 ms 19092 KB Output is correct
17 Correct 9 ms 19148 KB Output is correct
18 Correct 9 ms 19148 KB Output is correct
19 Correct 9 ms 19156 KB Output is correct
20 Correct 9 ms 19128 KB Output is correct
21 Correct 8 ms 19116 KB Output is correct
22 Correct 10 ms 19148 KB Output is correct
23 Correct 9 ms 19148 KB Output is correct
24 Correct 12 ms 19148 KB Output is correct
25 Correct 25 ms 19988 KB Output is correct
26 Correct 52 ms 21312 KB Output is correct
27 Correct 144 ms 24768 KB Output is correct
28 Correct 127 ms 27812 KB Output is correct
29 Correct 100 ms 23620 KB Output is correct
30 Correct 160 ms 27724 KB Output is correct
31 Correct 224 ms 27760 KB Output is correct
32 Correct 195 ms 27812 KB Output is correct
33 Correct 34 ms 20688 KB Output is correct
34 Correct 98 ms 23596 KB Output is correct
35 Correct 141 ms 27720 KB Output is correct
36 Correct 234 ms 27708 KB Output is correct
37 Correct 204 ms 27840 KB Output is correct
38 Correct 195 ms 27816 KB Output is correct