oj.uz

답안 #77365

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
77365 2018-09-26T13:13:21 Z tmwilliamlin168 Bulldozer (JOI17_bulldozer) C++14
100 / 100
 911 ms 94584 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long

const int mxN=2e3;
int n, p[mxN], l[mxN];
ll x[mxN], y[mxN], w[mxN], ans;
array<ll, 4> st[1<<12];
array<ll, 6> ss[mxN*(mxN-1)/2];

void upd(int l1, ll x, int i=1, int l2=0, int r2=n-1) {
	if(l2==r2) {
		st[i]={x, max(x, 0ll), max(x, 0ll), max(x, 0ll)};
		return;
	}
	int m2=(l2+r2)/2;
	if(l1<=m2)
		upd(l1, x, 2*i, l2, m2);
	else
		upd(l1, x, 2*i+1, m2+1, r2);
	st[i]={st[2*i][0]+st[2*i+1][0], max(st[2*i][1], st[2*i][0]+st[2*i+1][1]), max(st[2*i+1][2], st[2*i+1][0]+st[2*i][2]), max({st[2*i][3], st[2*i+1][3], st[2*i][2]+st[2*i+1][1]})};
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n;
	for(int i=0; i<n; ++i) {
		cin >> x[i] >> y[i] >> w[i];
		p[i]=i;
	}
	for(int i=0, k=0; i<n; ++i)
		for(int j=0; j<n; ++j)
			if(i!=j&&(x[i]<x[j]||x[i]==x[j]&&y[i]>y[j]))
				ss[k++]={y[j]-y[i], x[j]-x[i], x[i]==x[j]?y[j]:-x[j], x[i]==x[j]?y[i]:-x[i], i, j};
	sort(p, p+n, [&](const int &a, const int b) {
		return x[a]==x[b]?y[a]>y[b]:x[a]<x[b];
	});
	for(int i=0; i<n; ++i) {
		upd(i, w[p[i]]);
		l[p[i]]=i;
	}
	sort(ss, ss+n*(n-1)/2, [&](const array<ll, 6> &a, const array<ll, 6> &b) {
		ll c=a[0]*b[1]-a[1]*b[0];
		return c?c<0:array<ll, 2>{a[2], a[3]}<array<ll, 2>{b[2], b[3]};
	});
	ans=st[1][3];
	for(int i=0; i<n*(n-1)/2; ++i) {
		int u=ss[i][4], v=ss[i][5];
//		cout << u << " " << v << endl;
//		swap(p[l[u]], p[l[v]]);
//		for(int j=0; j<n; ++j)
//			cout << p[j] << " ";
//		cout << endl;
		swap(l[u], l[v]);
		upd(l[u], w[u]);
		upd(l[v], w[v]);
		if(i>=n*(n-1)/2-1||ss[i][0]*ss[i+1][1]<ss[i][1]*ss[i+1][0])
			ans=max(st[1][3], ans);//, cout << "ta " << st[1][3] << endl;
	}
	cout << ans;
}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:36:35: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
    if(i!=j&&(x[i]<x[j]||x[i]==x[j]&&y[i]>y[j]))
                         ~~~~~~~~~~^~~~~~~~~~~

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Correct 3 ms 640 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 3 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 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

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Correct 3 ms 640 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 3 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 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 768 KB Output is correct
22 Correct 3 ms 640 KB Output is correct
23 Correct 3 ms 640 KB Output is correct
24 Correct 3 ms 640 KB Output is correct
25 Correct 3 ms 640 KB Output is correct
26 Correct 3 ms 640 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 640 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 3 ms 640 KB Output is correct
31 Correct 3 ms 640 KB Output is correct
32 Correct 3 ms 640 KB Output is correct

Subtask #3
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Correct 3 ms 640 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 3 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 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 768 KB Output is correct
22 Correct 3 ms 640 KB Output is correct
23 Correct 3 ms 640 KB Output is correct
24 Correct 3 ms 640 KB Output is correct
25 Correct 3 ms 640 KB Output is correct
26 Correct 3 ms 640 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 640 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 3 ms 640 KB Output is correct
31 Correct 3 ms 640 KB Output is correct
32 Correct 3 ms 640 KB Output is correct
33 Correct 859 ms 94452 KB Output is correct
34 Correct 845 ms 94456 KB Output is correct
35 Correct 838 ms 94456 KB Output is correct
36 Correct 862 ms 94452 KB Output is correct
37 Correct 857 ms 94560 KB Output is correct
38 Correct 868 ms 94456 KB Output is correct
39 Correct 860 ms 94460 KB Output is correct
40 Correct 908 ms 94452 KB Output is correct
41 Correct 875 ms 94456 KB Output is correct
42 Correct 830 ms 94584 KB Output is correct
43 Correct 817 ms 94456 KB Output is correct
44 Correct 879 ms 94328 KB Output is correct
45 Correct 855 ms 94344 KB Output is correct
46 Correct 861 ms 94460 KB Output is correct
47 Correct 834 ms 94456 KB Output is correct
48 Correct 821 ms 94456 KB Output is correct
49 Correct 816 ms 94456 KB Output is correct
50 Correct 859 ms 94460 KB Output is correct
51 Correct 833 ms 94456 KB Output is correct
52 Correct 833 ms 94584 KB Output is correct
53 Correct 897 ms 94456 KB Output is correct
54 Correct 853 ms 94452 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Correct 3 ms 640 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 3 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 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 768 KB Output is correct
22 Correct 3 ms 640 KB Output is correct
23 Correct 3 ms 640 KB Output is correct
24 Correct 3 ms 640 KB Output is correct
25 Correct 3 ms 640 KB Output is correct
26 Correct 3 ms 640 KB Output is correct
27 Correct 3 ms 640 KB Output is correct
28 Correct 3 ms 640 KB Output is correct
29 Correct 4 ms 640 KB Output is correct
30 Correct 3 ms 640 KB Output is correct
31 Correct 3 ms 640 KB Output is correct
32 Correct 3 ms 640 KB Output is correct
33 Correct 859 ms 94452 KB Output is correct
34 Correct 845 ms 94456 KB Output is correct
35 Correct 838 ms 94456 KB Output is correct
36 Correct 862 ms 94452 KB Output is correct
37 Correct 857 ms 94560 KB Output is correct
38 Correct 868 ms 94456 KB Output is correct
39 Correct 860 ms 94460 KB Output is correct
40 Correct 908 ms 94452 KB Output is correct
41 Correct 875 ms 94456 KB Output is correct
42 Correct 830 ms 94584 KB Output is correct
43 Correct 817 ms 94456 KB Output is correct
44 Correct 879 ms 94328 KB Output is correct
45 Correct 855 ms 94344 KB Output is correct
46 Correct 861 ms 94460 KB Output is correct
47 Correct 834 ms 94456 KB Output is correct
48 Correct 821 ms 94456 KB Output is correct
49 Correct 816 ms 94456 KB Output is correct
50 Correct 859 ms 94460 KB Output is correct
51 Correct 833 ms 94456 KB Output is correct
52 Correct 833 ms 94584 KB Output is correct
53 Correct 897 ms 94456 KB Output is correct
54 Correct 853 ms 94452 KB Output is correct
55 Correct 871 ms 94464 KB Output is correct
56 Correct 835 ms 94456 KB Output is correct
57 Correct 865 ms 94456 KB Output is correct
58 Correct 852 ms 94452 KB Output is correct
59 Correct 867 ms 94496 KB Output is correct
60 Correct 843 ms 94452 KB Output is correct
61 Correct 911 ms 94456 KB Output is correct
62 Correct 847 ms 94452 KB Output is correct
63 Correct 841 ms 94460 KB Output is correct
64 Correct 839 ms 94456 KB Output is correct
65 Correct 858 ms 94460 KB Output is correct
66 Correct 853 ms 94452 KB Output is correct
67 Correct 861 ms 94456 KB Output is correct
68 Correct 825 ms 94456 KB Output is correct
69 Correct 834 ms 94496 KB Output is correct
70 Correct 842 ms 94460 KB Output is correct
71 Correct 820 ms 94460 KB Output is correct
72 Correct 827 ms 94576 KB Output is correct
73 Correct 825 ms 94456 KB Output is correct
74 Correct 852 ms 94452 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 640 KB Output is correct
2 Correct 3 ms 640 KB Output is correct
3 Correct 3 ms 640 KB Output is correct
4 Correct 3 ms 640 KB Output is correct
5 Correct 3 ms 640 KB Output is correct
6 Correct 3 ms 640 KB Output is correct
7 Correct 3 ms 640 KB Output is correct
8 Correct 3 ms 640 KB Output is correct
9 Correct 3 ms 640 KB Output is correct
10 Correct 3 ms 640 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 3 ms 640 KB Output is correct
17 Correct 3 ms 640 KB Output is correct
18 Correct 3 ms 640 KB Output is correct
19 Correct 3 ms 640 KB Output is correct
20 Correct 3 ms 640 KB Output is correct
21 Correct 3 ms 640 KB Output is correct
22 Correct 3 ms 640 KB Output is correct
23 Correct 3 ms 640 KB Output is correct
24 Correct 3 ms 640 KB Output is correct
25 Correct 3 ms 640 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 768 KB Output is correct
37 Correct 3 ms 640 KB Output is correct
38 Correct 3 ms 640 KB Output is correct
39 Correct 3 ms 640 KB Output is correct
40 Correct 3 ms 640 KB Output is correct
41 Correct 3 ms 640 KB Output is correct
42 Correct 3 ms 640 KB Output is correct
43 Correct 3 ms 640 KB Output is correct
44 Correct 4 ms 640 KB Output is correct
45 Correct 3 ms 640 KB Output is correct
46 Correct 3 ms 640 KB Output is correct
47 Correct 3 ms 640 KB Output is correct
48 Correct 859 ms 94452 KB Output is correct
49 Correct 845 ms 94456 KB Output is correct
50 Correct 838 ms 94456 KB Output is correct
51 Correct 862 ms 94452 KB Output is correct
52 Correct 857 ms 94560 KB Output is correct
53 Correct 868 ms 94456 KB Output is correct
54 Correct 860 ms 94460 KB Output is correct
55 Correct 908 ms 94452 KB Output is correct
56 Correct 875 ms 94456 KB Output is correct
57 Correct 830 ms 94584 KB Output is correct
58 Correct 817 ms 94456 KB Output is correct
59 Correct 879 ms 94328 KB Output is correct
60 Correct 855 ms 94344 KB Output is correct
61 Correct 861 ms 94460 KB Output is correct
62 Correct 834 ms 94456 KB Output is correct
63 Correct 821 ms 94456 KB Output is correct
64 Correct 816 ms 94456 KB Output is correct
65 Correct 859 ms 94460 KB Output is correct
66 Correct 833 ms 94456 KB Output is correct
67 Correct 833 ms 94584 KB Output is correct
68 Correct 897 ms 94456 KB Output is correct
69 Correct 853 ms 94452 KB Output is correct
70 Correct 871 ms 94464 KB Output is correct
71 Correct 835 ms 94456 KB Output is correct
72 Correct 865 ms 94456 KB Output is correct
73 Correct 852 ms 94452 KB Output is correct
74 Correct 867 ms 94496 KB Output is correct
75 Correct 843 ms 94452 KB Output is correct
76 Correct 911 ms 94456 KB Output is correct
77 Correct 847 ms 94452 KB Output is correct
78 Correct 841 ms 94460 KB Output is correct
79 Correct 839 ms 94456 KB Output is correct
80 Correct 858 ms 94460 KB Output is correct
81 Correct 853 ms 94452 KB Output is correct
82 Correct 861 ms 94456 KB Output is correct
83 Correct 825 ms 94456 KB Output is correct
84 Correct 834 ms 94496 KB Output is correct
85 Correct 842 ms 94460 KB Output is correct
86 Correct 820 ms 94460 KB Output is correct
87 Correct 827 ms 94576 KB Output is correct
88 Correct 825 ms 94456 KB Output is correct
89 Correct 852 ms 94452 KB Output is correct
90 Correct 837 ms 94456 KB Output is correct
91 Correct 833 ms 94460 KB Output is correct
92 Correct 830 ms 94452 KB Output is correct
93 Correct 845 ms 94456 KB Output is correct
94 Correct 858 ms 94456 KB Output is correct
95 Correct 862 ms 94460 KB Output is correct
96 Correct 855 ms 94456 KB Output is correct
97 Correct 845 ms 94456 KB Output is correct
98 Correct 831 ms 94456 KB Output is correct
99 Correct 880 ms 94460 KB Output is correct
100 Correct 825 ms 94452 KB Output is correct
101 Correct 804 ms 94456 KB Output is correct
102 Correct 827 ms 94452 KB Output is correct
103 Correct 807 ms 94464 KB Output is correct
104 Correct 818 ms 94452 KB Output is correct
105 Correct 823 ms 94456 KB Output is correct
106 Correct 822 ms 94452 KB Output is correct
107 Correct 827 ms 94456 KB Output is correct
108 Correct 817 ms 94456 KB Output is correct
109 Correct 823 ms 94456 KB Output is correct
110 Correct 826 ms 94456 KB Output is correct
111 Correct 807 ms 94460 KB Output is correct
112 Correct 813 ms 94456 KB Output is correct
113 Correct 793 ms 94412 KB Output is correct
114 Correct 788 ms 94460 KB Output is correct
115 Correct 798 ms 94456 KB Output is correct
116 Correct 793 ms 94556 KB Output is correct
117 Correct 800 ms 94464 KB Output is correct
118 Correct 790 ms 94460 KB Output is correct
119 Correct 798 ms 94456 KB Output is correct
120 Correct 2 ms 384 KB Output is correct
121 Correct 2 ms 384 KB Output is correct
122 Correct 838 ms 94468 KB Output is correct
123 Correct 826 ms 94504 KB Output is correct
124 Correct 832 ms 94576 KB Output is correct
125 Correct 816 ms 94364 KB Output is correct
126 Correct 837 ms 94452 KB Output is correct
127 Correct 822 ms 94464 KB Output is correct
128 Correct 855 ms 94536 KB Output is correct
129 Correct 828 ms 94460 KB Output is correct
130 Correct 849 ms 94456 KB Output is correct
131 Correct 836 ms 94476 KB Output is correct
132 Correct 813 ms 94452 KB Output is correct
133 Correct 816 ms 94460 KB Output is correct