답안 #46854 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
46854	2018-04-23T19:22:26 Z	qoo2p5	Bulldozer (JOI17_bulldozer)	C++17	80 / 100	988 ms	63276 KB

bulldozer

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int INF = (int) 1e9 + 1e6;
const ll LINF = (ll) 1e18 + 1e9;
const ll MOD = (ll) 1e9 + 7;

#define sz(x) (int) (x).size()
#define mp(x, y) make_pair(x, y)
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define lb(s, t, x) (int) (lower_bound(s, t, x) - s)
#define ub(s, t, x) (int) (upper_bound(s, t, x) - s)
#define rep(i, f, t) for (auto i = f; i < t; ++(i))
#define per(i, f, t) for (auto i = (f); i >= (t); --(i))

ll power(ll x, ll y, ll mod = MOD) {
    if (y == 0) {
        return 1;
    }
    if (y & 1) {
        return power(x, y - 1, mod) * x % mod;
    } else {
        ll tmp = power(x, y / 2, mod);
        return tmp * tmp % mod;
    }
}

template<typename A, typename B> bool mini(A &x, const B &y) {
    if (y < x) {
        x = y;
        return true;
    }
    return false;
}

template<typename A, typename B> bool maxi(A &x, const B &y) {
    if (x < y) {
        x = y;
        return true;
    }
    return false;
}

void add(ll &x, ll y) {
    x += y;
    if (x >= MOD) x -= MOD;
    if (x < 0) x += MOD;
}

void run();

#define TASK ""

int main() {
#ifdef LOCAL
    if (strlen(TASK) > 0) {
        cerr << "Reminder: you are using file i/o, filename: " TASK "!" << endl << endl;
    }
#endif
#ifndef LOCAL
    if (strlen(TASK)) {
        freopen(TASK ".in", "r", stdin);
        freopen(TASK ".out", "w", stdout);
    }
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
#endif
    cout << fixed << setprecision(12);
    run();
    return 0;
}

// == SOLUTION == //

#define double long double

const int N = 1 << 11;
const double EPS = 1e-16;

struct P {
	ll x, y, c;
};

int n;
P p[N];

struct Ev {
	int a, b;
	double ang;
	
	Ev(int a, int b) : a(a), b(b) {
		if (p[a].x == p[b].x) {
			ang = 1e10;
		} else {
			ang = (double) (p[a].y - p[b].y) / (p[a].x - p[b].x);
		}
	}
};

bool operator<(const Ev &u, const Ev &v) {
	if (u.ang + EPS < v.ang) {
		return 1;
	}
	if (u.ang - EPS > v.ang) {
		return 0;
	}
	
	return mp(u.a, u.b) < mp(v.a, v.b);
}

struct Node {
	ll sum, res, left, right;
};

Node tree[2 * N + 13];

void upd(int i, ll val) {
	i += N;
	tree[i] = {val, max(0LL, val), max(0LL, val), max(0LL, val)};
	i /= 2;
	while (i > 0) {
		tree[i].sum = tree[2 * i].sum + tree[2 * i + 1].sum;
		tree[i].left = max(tree[2 * i].left, tree[2 * i].sum + tree[2 * i + 1].left);
		tree[i].right = max(tree[2 * i + 1].right, tree[2 * i + 1].sum + tree[2 * i].right);
		tree[i].res = max(tree[2 * i].right + tree[2 * i + 1].left, max(tree[2 * i].res, tree[2 * i + 1].res));
		i /= 2;
	}
}

ll get() {
	return tree[1].res;
}

int pos[N];

void make(const Ev &ev) {
	int a = pos[ev.a];
	int b = pos[ev.b];
	assert(a + 1 == b);
	swap(pos[ev.a], pos[ev.b]);
	ll va = tree[N + a].sum;
	ll vb = tree[N + b].sum;
	upd(a, vb);
	upd(b, va);
}

void run() {
	cin >> n;
	rep(i, 0, n) {
		cin >> p[i].x >> p[i].y >> p[i].c;
	}
	sort(p, p + n, [] (const auto &a, const auto &b) {
		return mp(a.x, a.y) < mp(b.x, b.y);
	});
	vector<Ev> events;
	events.reserve(n * (n - 1) / 2);
	rep(i, 0, n) {
		rep(j, i + 1, n) {
			events.pb(Ev(i, j));
		}
	}
	sort(all(events));
	
	ll ans = 0;
	rep(i, 0, n) {
		upd(i, p[i].c);
		pos[i] = i;
	}
	
	maxi(ans, get());
	
	rep(i, 0, sz(events)) {
		make(events[i]);
		int j = i;
		while (j + 1 < sz(events) && abs(events[j].ang - events[j + 1].ang) < EPS) {
			j++;
			make(events[j]);
		}
		
		maxi(ans, get());
		i = j;
	}
	
	cout << ans << "\n";
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:67:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(TASK ".in", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
bulldozer.cpp:68:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen(TASK ".out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	512 KB	Output is correct
2	Correct	4 ms	512 KB	Output is correct
3	Correct	4 ms	512 KB	Output is correct
4	Correct	4 ms	512 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	4 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	4 ms	512 KB	Output is correct
9	Correct	4 ms	512 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	324 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	512 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	3 ms	512 KB	Output is correct
4	Correct	4 ms	640 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	512 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	3 ms	512 KB	Output is correct
22	Correct	3 ms	512 KB	Output is correct
23	Correct	3 ms	512 KB	Output is correct
24	Correct	3 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	3 ms	512 KB	Output is correct
27	Correct	4 ms	540 KB	Output is correct
28	Correct	3 ms	512 KB	Output is correct
29	Correct	4 ms	512 KB	Output is correct
30	Correct	4 ms	512 KB	Output is correct
31	Correct	4 ms	512 KB	Output is correct
32	Correct	4 ms	512 KB	Output is correct

Subtask #3
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	512 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	3 ms	512 KB	Output is correct
4	Correct	4 ms	640 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	512 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	3 ms	512 KB	Output is correct
22	Correct	3 ms	512 KB	Output is correct
23	Correct	3 ms	512 KB	Output is correct
24	Correct	3 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	3 ms	512 KB	Output is correct
27	Correct	4 ms	540 KB	Output is correct
28	Correct	3 ms	512 KB	Output is correct
29	Correct	4 ms	512 KB	Output is correct
30	Correct	4 ms	512 KB	Output is correct
31	Correct	4 ms	512 KB	Output is correct
32	Correct	4 ms	512 KB	Output is correct
33	Correct	894 ms	63160 KB	Output is correct
34	Correct	882 ms	63096 KB	Output is correct
35	Correct	872 ms	63168 KB	Output is correct
36	Correct	840 ms	63228 KB	Output is correct
37	Correct	864 ms	63064 KB	Output is correct
38	Correct	848 ms	63096 KB	Output is correct
39	Correct	877 ms	63228 KB	Output is correct
40	Correct	856 ms	63224 KB	Output is correct
41	Correct	852 ms	63184 KB	Output is correct
42	Correct	843 ms	63168 KB	Output is correct
43	Correct	875 ms	63224 KB	Output is correct
44	Correct	836 ms	63224 KB	Output is correct
45	Correct	847 ms	63216 KB	Output is correct
46	Correct	846 ms	63180 KB	Output is correct
47	Correct	854 ms	63096 KB	Output is correct
48	Correct	862 ms	63160 KB	Output is correct
49	Correct	867 ms	63244 KB	Output is correct
50	Correct	868 ms	63176 KB	Output is correct
51	Correct	878 ms	63164 KB	Output is correct
52	Correct	879 ms	63168 KB	Output is correct
53	Correct	839 ms	63068 KB	Output is correct
54	Correct	850 ms	63276 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	512 KB	Output is correct
2	Correct	3 ms	512 KB	Output is correct
3	Correct	3 ms	512 KB	Output is correct
4	Correct	4 ms	640 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	3 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	3 ms	512 KB	Output is correct
9	Correct	3 ms	512 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	384 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	2 ms	384 KB	Output is correct
18	Correct	2 ms	384 KB	Output is correct
19	Correct	2 ms	384 KB	Output is correct
20	Correct	2 ms	384 KB	Output is correct
21	Correct	3 ms	512 KB	Output is correct
22	Correct	3 ms	512 KB	Output is correct
23	Correct	3 ms	512 KB	Output is correct
24	Correct	3 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	3 ms	512 KB	Output is correct
27	Correct	4 ms	540 KB	Output is correct
28	Correct	3 ms	512 KB	Output is correct
29	Correct	4 ms	512 KB	Output is correct
30	Correct	4 ms	512 KB	Output is correct
31	Correct	4 ms	512 KB	Output is correct
32	Correct	4 ms	512 KB	Output is correct
33	Correct	894 ms	63160 KB	Output is correct
34	Correct	882 ms	63096 KB	Output is correct
35	Correct	872 ms	63168 KB	Output is correct
36	Correct	840 ms	63228 KB	Output is correct
37	Correct	864 ms	63064 KB	Output is correct
38	Correct	848 ms	63096 KB	Output is correct
39	Correct	877 ms	63228 KB	Output is correct
40	Correct	856 ms	63224 KB	Output is correct
41	Correct	852 ms	63184 KB	Output is correct
42	Correct	843 ms	63168 KB	Output is correct
43	Correct	875 ms	63224 KB	Output is correct
44	Correct	836 ms	63224 KB	Output is correct
45	Correct	847 ms	63216 KB	Output is correct
46	Correct	846 ms	63180 KB	Output is correct
47	Correct	854 ms	63096 KB	Output is correct
48	Correct	862 ms	63160 KB	Output is correct
49	Correct	867 ms	63244 KB	Output is correct
50	Correct	868 ms	63176 KB	Output is correct
51	Correct	878 ms	63164 KB	Output is correct
52	Correct	879 ms	63168 KB	Output is correct
53	Correct	839 ms	63068 KB	Output is correct
54	Correct	850 ms	63276 KB	Output is correct
55	Correct	860 ms	63172 KB	Output is correct
56	Correct	843 ms	63176 KB	Output is correct
57	Correct	866 ms	63172 KB	Output is correct
58	Correct	857 ms	63196 KB	Output is correct
59	Correct	988 ms	63168 KB	Output is correct
60	Correct	899 ms	63268 KB	Output is correct
61	Correct	864 ms	63164 KB	Output is correct
62	Correct	858 ms	63168 KB	Output is correct
63	Correct	859 ms	63172 KB	Output is correct
64	Correct	857 ms	63164 KB	Output is correct
65	Correct	865 ms	63164 KB	Output is correct
66	Correct	862 ms	63164 KB	Output is correct
67	Correct	843 ms	63168 KB	Output is correct
68	Correct	851 ms	63164 KB	Output is correct
69	Correct	843 ms	63168 KB	Output is correct
70	Correct	887 ms	63040 KB	Output is correct
71	Correct	846 ms	63100 KB	Output is correct
72	Correct	856 ms	63168 KB	Output is correct
73	Correct	870 ms	63236 KB	Output is correct
74	Correct	868 ms	63168 KB	Output is correct

Subtask #5
0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	512 KB	Output is correct
2	Correct	4 ms	512 KB	Output is correct
3	Correct	4 ms	512 KB	Output is correct
4	Correct	4 ms	512 KB	Output is correct
5	Correct	3 ms	512 KB	Output is correct
6	Correct	4 ms	512 KB	Output is correct
7	Correct	3 ms	512 KB	Output is correct
8	Correct	4 ms	512 KB	Output is correct
9	Correct	4 ms	512 KB	Output is correct
10	Correct	3 ms	512 KB	Output is correct
11	Correct	2 ms	324 KB	Output is correct
12	Correct	2 ms	384 KB	Output is correct
13	Correct	2 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	384 KB	Output is correct
16	Correct	3 ms	512 KB	Output is correct
17	Correct	3 ms	512 KB	Output is correct
18	Correct	3 ms	512 KB	Output is correct
19	Correct	4 ms	640 KB	Output is correct
20	Correct	3 ms	512 KB	Output is correct
21	Correct	3 ms	512 KB	Output is correct
22	Correct	3 ms	512 KB	Output is correct
23	Correct	3 ms	512 KB	Output is correct
24	Correct	3 ms	512 KB	Output is correct
25	Correct	3 ms	512 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	384 KB	Output is correct
28	Correct	2 ms	384 KB	Output is correct
29	Correct	2 ms	384 KB	Output is correct
30	Correct	2 ms	384 KB	Output is correct
31	Correct	2 ms	384 KB	Output is correct
32	Correct	2 ms	384 KB	Output is correct
33	Correct	2 ms	384 KB	Output is correct
34	Correct	2 ms	384 KB	Output is correct
35	Correct	2 ms	384 KB	Output is correct
36	Correct	3 ms	512 KB	Output is correct
37	Correct	3 ms	512 KB	Output is correct
38	Correct	3 ms	512 KB	Output is correct
39	Correct	3 ms	512 KB	Output is correct
40	Correct	3 ms	512 KB	Output is correct
41	Correct	3 ms	512 KB	Output is correct
42	Correct	4 ms	540 KB	Output is correct
43	Correct	3 ms	512 KB	Output is correct
44	Correct	4 ms	512 KB	Output is correct
45	Correct	4 ms	512 KB	Output is correct
46	Correct	4 ms	512 KB	Output is correct
47	Correct	4 ms	512 KB	Output is correct
48	Correct	894 ms	63160 KB	Output is correct
49	Correct	882 ms	63096 KB	Output is correct
50	Correct	872 ms	63168 KB	Output is correct
51	Correct	840 ms	63228 KB	Output is correct
52	Correct	864 ms	63064 KB	Output is correct
53	Correct	848 ms	63096 KB	Output is correct
54	Correct	877 ms	63228 KB	Output is correct
55	Correct	856 ms	63224 KB	Output is correct
56	Correct	852 ms	63184 KB	Output is correct
57	Correct	843 ms	63168 KB	Output is correct
58	Correct	875 ms	63224 KB	Output is correct
59	Correct	836 ms	63224 KB	Output is correct
60	Correct	847 ms	63216 KB	Output is correct
61	Correct	846 ms	63180 KB	Output is correct
62	Correct	854 ms	63096 KB	Output is correct
63	Correct	862 ms	63160 KB	Output is correct
64	Correct	867 ms	63244 KB	Output is correct
65	Correct	868 ms	63176 KB	Output is correct
66	Correct	878 ms	63164 KB	Output is correct
67	Correct	879 ms	63168 KB	Output is correct
68	Correct	839 ms	63068 KB	Output is correct
69	Correct	850 ms	63276 KB	Output is correct
70	Correct	860 ms	63172 KB	Output is correct
71	Correct	843 ms	63176 KB	Output is correct
72	Correct	866 ms	63172 KB	Output is correct
73	Correct	857 ms	63196 KB	Output is correct
74	Correct	988 ms	63168 KB	Output is correct
75	Correct	899 ms	63268 KB	Output is correct
76	Correct	864 ms	63164 KB	Output is correct
77	Correct	858 ms	63168 KB	Output is correct
78	Correct	859 ms	63172 KB	Output is correct
79	Correct	857 ms	63164 KB	Output is correct
80	Correct	865 ms	63164 KB	Output is correct
81	Correct	862 ms	63164 KB	Output is correct
82	Correct	843 ms	63168 KB	Output is correct
83	Correct	851 ms	63164 KB	Output is correct
84	Correct	843 ms	63168 KB	Output is correct
85	Correct	887 ms	63040 KB	Output is correct
86	Correct	846 ms	63100 KB	Output is correct
87	Correct	856 ms	63168 KB	Output is correct
88	Correct	870 ms	63236 KB	Output is correct
89	Correct	868 ms	63168 KB	Output is correct
90	Correct	873 ms	63096 KB	Output is correct
91	Correct	854 ms	63164 KB	Output is correct
92	Correct	867 ms	63168 KB	Output is correct
93	Correct	850 ms	63160 KB	Output is correct
94	Correct	848 ms	63168 KB	Output is correct
95	Correct	908 ms	63164 KB	Output is correct
96	Correct	881 ms	63164 KB	Output is correct
97	Correct	962 ms	63164 KB	Output is correct
98	Correct	872 ms	63224 KB	Output is correct
99	Correct	921 ms	63096 KB	Output is correct
100	Correct	901 ms	63172 KB	Output is correct
101	Correct	875 ms	63096 KB	Output is correct
102	Correct	881 ms	63176 KB	Output is correct
103	Correct	877 ms	63092 KB	Output is correct
104	Correct	866 ms	63180 KB	Output is correct
105	Correct	861 ms	63232 KB	Output is correct
106	Correct	850 ms	63256 KB	Output is correct
107	Correct	831 ms	63220 KB	Output is correct
108	Correct	843 ms	63204 KB	Output is correct
109	Correct	845 ms	63164 KB	Output is correct
110	Correct	928 ms	63160 KB	Output is correct
111	Correct	905 ms	63164 KB	Output is correct
112	Correct	915 ms	63164 KB	Output is correct
113	Correct	901 ms	63224 KB	Output is correct
114	Correct	917 ms	63224 KB	Output is correct
115	Correct	918 ms	63164 KB	Output is correct
116	Correct	922 ms	63096 KB	Output is correct
117	Correct	915 ms	63200 KB	Output is correct
118	Correct	905 ms	63164 KB	Output is correct
119	Correct	906 ms	63164 KB	Output is correct
120	Incorrect	2 ms	384 KB	Output isn't correct
121	Halted	0 ms	0 KB	-

답안 #46854

Compilation message

Subtask #1 5.0 / 5.0

Subtask #2 20.0 / 20.0

Subtask #3 35.0 / 35.0

Subtask #4 20.0 / 20.0

Subtask #5 0 / 20.0

Subtask #1
5.0 / 5.0

Subtask #2
20.0 / 20.0

Subtask #3
35.0 / 35.0

Subtask #4
20.0 / 20.0

Subtask #5
0 / 20.0