답안 #26582 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
26582	2017-07-03T09:40:21 Z	dwarn	Bulldozer (JOI17_bulldozer)	C++14	100 / 100	1209 ms	118008 KB

bulldozer

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for(int i = (a); i < (b); ++i)
#define rrep(i,a,b) for(int i = (b); i --> (a);)
#define all(v) (v).begin(),(v).end()
#define trav(x,v) for(auto &x : (v))
#define sz(v) (int)(v).size()
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;

struct ST {
	int n;
	vector<ll> sum, mx, mn, ans;
	ST(int _n) : n(_n){
		while(__builtin_popcount(n) > 1) ++n;
		sum.resize(2*n);
		mn.resize(2*n);
		mx.resize(2*n);
		ans.resize(2*n);
	}
	void upd(ll dif, int pos){
		for(pos += n; pos; pos /= 2){
			sum[pos] += dif;
			mn[pos] = min(0LL, sum[pos]);
			ans[pos] = mx[pos] = max(0LL, sum[pos]);
			if(pos < n){
				mn[pos] = min(mn[pos], min(mn[2*pos], sum[2*pos]+mn[2*pos+1]));
				mx[pos] = max(mx[pos], max(mx[2*pos], sum[2*pos]+mx[2*pos+1]));

				ans[pos] = max(ans[pos], max(ans[2*pos],ans[2*pos+1]));
				ans[pos] = max(ans[pos], mx[2*pos+1]+sum[2*pos]-mn[2*pos]);
			}
		}
	}
};

int ren[int(4e6)];
vector<vi> ls[int(2e6+10)];
int pos[int(2e6+10)], xs[2000], ys[2000], zs[2000];

int main(){
	rep(i,0,2e6+10) pos[i] = -1;

	int n;
	scanf("%d",&n);

	rep(i,0,n) scanf("%d %d %d",xs+i,ys+i,zs+i);

	auto vec = [&](int i, int j){
		int dx = xs[i]-xs[j], dy = ys[i]-ys[j];
		int g = dy==0 ? dx : __gcd(dx, dy);
		dx /= g, dy /= g;
		if(dx<0 || (dx==0 && dy<0)){
			dx = -dx, dy = -dy;
		}
		return pii(dx,dy);
	};

	vi perm(n);
	rep(i,0,n) perm[i] = i;
	sort(all(perm), [&](int i, int j){
		return xs[i]<xs[j]||(xs[i]==xs[j] && ys[i]<ys[j]);
	});
	vi mynum(n);
	rep(i,0,n) mynum[perm[i]] = i;

	vector<pair<pii,pii>> pas(n*(n-1)/2);
	int ix = 0;
	rep(i,0,n) rep(j,0,i) pas[ix++] = {vec(perm[i],perm[j]), {perm[i],perm[j]}};
	stable_sort(all(pas), [&](const pair<pii,pii> &a, const pair<pii,pii> &b){
		return (ll)a.first.second*b.first.first-(ll)a.first.first*b.first.second>0;
	});

	ST tree(n);
	rep(i,0,n)
		tree.upd(zs[i], mynum[i]);
	ll ans = tree.ans[1];

	for(int l = 0, r = 0; l < sz(pas); l = r){
		while(r < sz(pas) && pas[l].first == pas[r].first) ++r;
		rep(k,l,r){
			int a = pas[k].second.first, b = pas[k].second.second;
			tree.upd(zs[a]-zs[b], mynum[b]);
			tree.upd(zs[b]-zs[a], mynum[a]);
			swap(mynum[a], mynum[b]);
		}
		ans = max(ans, tree.ans[1]);
	}

	printf("%lld\n",ans);
	exit(0);

}

Compilation message

bulldozer.cpp: In function 'int main()':
bulldozer.cpp:46:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
bulldozer.cpp:48:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  rep(i,0,n) scanf("%d %d %d",xs+i,ys+i,zs+i);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	55288 KB	Output is correct
2	Correct	48 ms	55268 KB	Output is correct
3	Correct	48 ms	55216 KB	Output is correct
4	Correct	48 ms	55276 KB	Output is correct
5	Correct	50 ms	55416 KB	Output is correct
6	Correct	49 ms	55288 KB	Output is correct
7	Correct	48 ms	55288 KB	Output is correct
8	Correct	48 ms	55276 KB	Output is correct
9	Correct	48 ms	55288 KB	Output is correct
10	Correct	51 ms	55288 KB	Output is correct
11	Correct	50 ms	55160 KB	Output is correct
12	Correct	48 ms	55160 KB	Output is correct
13	Correct	50 ms	55160 KB	Output is correct
14	Correct	50 ms	55156 KB	Output is correct
15	Correct	50 ms	55060 KB	Output is correct

Subtask #2
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	55336 KB	Output is correct
2	Correct	50 ms	55208 KB	Output is correct
3	Correct	51 ms	55288 KB	Output is correct
4	Correct	50 ms	55260 KB	Output is correct
5	Correct	53 ms	55260 KB	Output is correct
6	Correct	55 ms	55332 KB	Output is correct
7	Correct	56 ms	55248 KB	Output is correct
8	Correct	51 ms	55260 KB	Output is correct
9	Correct	52 ms	55288 KB	Output is correct
10	Correct	53 ms	55288 KB	Output is correct
11	Correct	52 ms	55056 KB	Output is correct
12	Correct	49 ms	55084 KB	Output is correct
13	Correct	50 ms	55160 KB	Output is correct
14	Correct	49 ms	55116 KB	Output is correct
15	Correct	51 ms	55184 KB	Output is correct
16	Correct	49 ms	55160 KB	Output is correct
17	Correct	48 ms	55160 KB	Output is correct
18	Correct	48 ms	55172 KB	Output is correct
19	Correct	49 ms	55160 KB	Output is correct
20	Correct	48 ms	55172 KB	Output is correct
21	Correct	52 ms	55300 KB	Output is correct
22	Correct	50 ms	55288 KB	Output is correct
23	Correct	52 ms	55324 KB	Output is correct
24	Correct	52 ms	55240 KB	Output is correct
25	Correct	51 ms	55328 KB	Output is correct
26	Correct	50 ms	55288 KB	Output is correct
27	Correct	52 ms	55272 KB	Output is correct
28	Correct	52 ms	55400 KB	Output is correct
29	Correct	50 ms	55260 KB	Output is correct
30	Correct	51 ms	55288 KB	Output is correct
31	Correct	49 ms	55300 KB	Output is correct
32	Correct	53 ms	55288 KB	Output is correct

Subtask #3
35.0 / 35.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	55336 KB	Output is correct
2	Correct	50 ms	55208 KB	Output is correct
3	Correct	51 ms	55288 KB	Output is correct
4	Correct	50 ms	55260 KB	Output is correct
5	Correct	53 ms	55260 KB	Output is correct
6	Correct	55 ms	55332 KB	Output is correct
7	Correct	56 ms	55248 KB	Output is correct
8	Correct	51 ms	55260 KB	Output is correct
9	Correct	52 ms	55288 KB	Output is correct
10	Correct	53 ms	55288 KB	Output is correct
11	Correct	52 ms	55056 KB	Output is correct
12	Correct	49 ms	55084 KB	Output is correct
13	Correct	50 ms	55160 KB	Output is correct
14	Correct	49 ms	55116 KB	Output is correct
15	Correct	51 ms	55184 KB	Output is correct
16	Correct	49 ms	55160 KB	Output is correct
17	Correct	48 ms	55160 KB	Output is correct
18	Correct	48 ms	55172 KB	Output is correct
19	Correct	49 ms	55160 KB	Output is correct
20	Correct	48 ms	55172 KB	Output is correct
21	Correct	52 ms	55300 KB	Output is correct
22	Correct	50 ms	55288 KB	Output is correct
23	Correct	52 ms	55324 KB	Output is correct
24	Correct	52 ms	55240 KB	Output is correct
25	Correct	51 ms	55328 KB	Output is correct
26	Correct	50 ms	55288 KB	Output is correct
27	Correct	52 ms	55272 KB	Output is correct
28	Correct	52 ms	55400 KB	Output is correct
29	Correct	50 ms	55260 KB	Output is correct
30	Correct	51 ms	55288 KB	Output is correct
31	Correct	49 ms	55300 KB	Output is correct
32	Correct	53 ms	55288 KB	Output is correct
33	Correct	1117 ms	117736 KB	Output is correct
34	Correct	1129 ms	117876 KB	Output is correct
35	Correct	1129 ms	117752 KB	Output is correct
36	Correct	1142 ms	117752 KB	Output is correct
37	Correct	1135 ms	117792 KB	Output is correct
38	Correct	1151 ms	117756 KB	Output is correct
39	Correct	1121 ms	117880 KB	Output is correct
40	Correct	1120 ms	117852 KB	Output is correct
41	Correct	1124 ms	117880 KB	Output is correct
42	Correct	1130 ms	117724 KB	Output is correct
43	Correct	1092 ms	117800 KB	Output is correct
44	Correct	1071 ms	117816 KB	Output is correct
45	Correct	1055 ms	117752 KB	Output is correct
46	Correct	1079 ms	117800 KB	Output is correct
47	Correct	1064 ms	117880 KB	Output is correct
48	Correct	1087 ms	117804 KB	Output is correct
49	Correct	1131 ms	117804 KB	Output is correct
50	Correct	1068 ms	117880 KB	Output is correct
51	Correct	1085 ms	117980 KB	Output is correct
52	Correct	1051 ms	117808 KB	Output is correct
53	Correct	1056 ms	117804 KB	Output is correct
54	Correct	1062 ms	117740 KB	Output is correct

Subtask #4
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	55 ms	55336 KB	Output is correct
2	Correct	50 ms	55208 KB	Output is correct
3	Correct	51 ms	55288 KB	Output is correct
4	Correct	50 ms	55260 KB	Output is correct
5	Correct	53 ms	55260 KB	Output is correct
6	Correct	55 ms	55332 KB	Output is correct
7	Correct	56 ms	55248 KB	Output is correct
8	Correct	51 ms	55260 KB	Output is correct
9	Correct	52 ms	55288 KB	Output is correct
10	Correct	53 ms	55288 KB	Output is correct
11	Correct	52 ms	55056 KB	Output is correct
12	Correct	49 ms	55084 KB	Output is correct
13	Correct	50 ms	55160 KB	Output is correct
14	Correct	49 ms	55116 KB	Output is correct
15	Correct	51 ms	55184 KB	Output is correct
16	Correct	49 ms	55160 KB	Output is correct
17	Correct	48 ms	55160 KB	Output is correct
18	Correct	48 ms	55172 KB	Output is correct
19	Correct	49 ms	55160 KB	Output is correct
20	Correct	48 ms	55172 KB	Output is correct
21	Correct	52 ms	55300 KB	Output is correct
22	Correct	50 ms	55288 KB	Output is correct
23	Correct	52 ms	55324 KB	Output is correct
24	Correct	52 ms	55240 KB	Output is correct
25	Correct	51 ms	55328 KB	Output is correct
26	Correct	50 ms	55288 KB	Output is correct
27	Correct	52 ms	55272 KB	Output is correct
28	Correct	52 ms	55400 KB	Output is correct
29	Correct	50 ms	55260 KB	Output is correct
30	Correct	51 ms	55288 KB	Output is correct
31	Correct	49 ms	55300 KB	Output is correct
32	Correct	53 ms	55288 KB	Output is correct
33	Correct	1117 ms	117736 KB	Output is correct
34	Correct	1129 ms	117876 KB	Output is correct
35	Correct	1129 ms	117752 KB	Output is correct
36	Correct	1142 ms	117752 KB	Output is correct
37	Correct	1135 ms	117792 KB	Output is correct
38	Correct	1151 ms	117756 KB	Output is correct
39	Correct	1121 ms	117880 KB	Output is correct
40	Correct	1120 ms	117852 KB	Output is correct
41	Correct	1124 ms	117880 KB	Output is correct
42	Correct	1130 ms	117724 KB	Output is correct
43	Correct	1092 ms	117800 KB	Output is correct
44	Correct	1071 ms	117816 KB	Output is correct
45	Correct	1055 ms	117752 KB	Output is correct
46	Correct	1079 ms	117800 KB	Output is correct
47	Correct	1064 ms	117880 KB	Output is correct
48	Correct	1087 ms	117804 KB	Output is correct
49	Correct	1131 ms	117804 KB	Output is correct
50	Correct	1068 ms	117880 KB	Output is correct
51	Correct	1085 ms	117980 KB	Output is correct
52	Correct	1051 ms	117808 KB	Output is correct
53	Correct	1056 ms	117804 KB	Output is correct
54	Correct	1062 ms	117740 KB	Output is correct
55	Correct	1132 ms	117800 KB	Output is correct
56	Correct	1129 ms	117896 KB	Output is correct
57	Correct	1135 ms	117880 KB	Output is correct
58	Correct	1138 ms	117792 KB	Output is correct
59	Correct	1133 ms	117752 KB	Output is correct
60	Correct	1121 ms	117960 KB	Output is correct
61	Correct	1138 ms	117868 KB	Output is correct
62	Correct	1136 ms	117828 KB	Output is correct
63	Correct	1126 ms	117756 KB	Output is correct
64	Correct	1184 ms	117752 KB	Output is correct
65	Correct	1157 ms	117904 KB	Output is correct
66	Correct	1119 ms	117820 KB	Output is correct
67	Correct	1165 ms	117740 KB	Output is correct
68	Correct	1209 ms	117768 KB	Output is correct
69	Correct	1177 ms	117748 KB	Output is correct
70	Correct	1209 ms	117736 KB	Output is correct
71	Correct	1132 ms	117880 KB	Output is correct
72	Correct	1113 ms	117752 KB	Output is correct
73	Correct	1142 ms	117752 KB	Output is correct
74	Correct	1134 ms	117752 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	47 ms	55288 KB	Output is correct
2	Correct	48 ms	55268 KB	Output is correct
3	Correct	48 ms	55216 KB	Output is correct
4	Correct	48 ms	55276 KB	Output is correct
5	Correct	50 ms	55416 KB	Output is correct
6	Correct	49 ms	55288 KB	Output is correct
7	Correct	48 ms	55288 KB	Output is correct
8	Correct	48 ms	55276 KB	Output is correct
9	Correct	48 ms	55288 KB	Output is correct
10	Correct	51 ms	55288 KB	Output is correct
11	Correct	50 ms	55160 KB	Output is correct
12	Correct	48 ms	55160 KB	Output is correct
13	Correct	50 ms	55160 KB	Output is correct
14	Correct	50 ms	55156 KB	Output is correct
15	Correct	50 ms	55060 KB	Output is correct
16	Correct	55 ms	55336 KB	Output is correct
17	Correct	50 ms	55208 KB	Output is correct
18	Correct	51 ms	55288 KB	Output is correct
19	Correct	50 ms	55260 KB	Output is correct
20	Correct	53 ms	55260 KB	Output is correct
21	Correct	55 ms	55332 KB	Output is correct
22	Correct	56 ms	55248 KB	Output is correct
23	Correct	51 ms	55260 KB	Output is correct
24	Correct	52 ms	55288 KB	Output is correct
25	Correct	53 ms	55288 KB	Output is correct
26	Correct	52 ms	55056 KB	Output is correct
27	Correct	49 ms	55084 KB	Output is correct
28	Correct	50 ms	55160 KB	Output is correct
29	Correct	49 ms	55116 KB	Output is correct
30	Correct	51 ms	55184 KB	Output is correct
31	Correct	49 ms	55160 KB	Output is correct
32	Correct	48 ms	55160 KB	Output is correct
33	Correct	48 ms	55172 KB	Output is correct
34	Correct	49 ms	55160 KB	Output is correct
35	Correct	48 ms	55172 KB	Output is correct
36	Correct	52 ms	55300 KB	Output is correct
37	Correct	50 ms	55288 KB	Output is correct
38	Correct	52 ms	55324 KB	Output is correct
39	Correct	52 ms	55240 KB	Output is correct
40	Correct	51 ms	55328 KB	Output is correct
41	Correct	50 ms	55288 KB	Output is correct
42	Correct	52 ms	55272 KB	Output is correct
43	Correct	52 ms	55400 KB	Output is correct
44	Correct	50 ms	55260 KB	Output is correct
45	Correct	51 ms	55288 KB	Output is correct
46	Correct	49 ms	55300 KB	Output is correct
47	Correct	53 ms	55288 KB	Output is correct
48	Correct	1117 ms	117736 KB	Output is correct
49	Correct	1129 ms	117876 KB	Output is correct
50	Correct	1129 ms	117752 KB	Output is correct
51	Correct	1142 ms	117752 KB	Output is correct
52	Correct	1135 ms	117792 KB	Output is correct
53	Correct	1151 ms	117756 KB	Output is correct
54	Correct	1121 ms	117880 KB	Output is correct
55	Correct	1120 ms	117852 KB	Output is correct
56	Correct	1124 ms	117880 KB	Output is correct
57	Correct	1130 ms	117724 KB	Output is correct
58	Correct	1092 ms	117800 KB	Output is correct
59	Correct	1071 ms	117816 KB	Output is correct
60	Correct	1055 ms	117752 KB	Output is correct
61	Correct	1079 ms	117800 KB	Output is correct
62	Correct	1064 ms	117880 KB	Output is correct
63	Correct	1087 ms	117804 KB	Output is correct
64	Correct	1131 ms	117804 KB	Output is correct
65	Correct	1068 ms	117880 KB	Output is correct
66	Correct	1085 ms	117980 KB	Output is correct
67	Correct	1051 ms	117808 KB	Output is correct
68	Correct	1056 ms	117804 KB	Output is correct
69	Correct	1062 ms	117740 KB	Output is correct
70	Correct	1132 ms	117800 KB	Output is correct
71	Correct	1129 ms	117896 KB	Output is correct
72	Correct	1135 ms	117880 KB	Output is correct
73	Correct	1138 ms	117792 KB	Output is correct
74	Correct	1133 ms	117752 KB	Output is correct
75	Correct	1121 ms	117960 KB	Output is correct
76	Correct	1138 ms	117868 KB	Output is correct
77	Correct	1136 ms	117828 KB	Output is correct
78	Correct	1126 ms	117756 KB	Output is correct
79	Correct	1184 ms	117752 KB	Output is correct
80	Correct	1157 ms	117904 KB	Output is correct
81	Correct	1119 ms	117820 KB	Output is correct
82	Correct	1165 ms	117740 KB	Output is correct
83	Correct	1209 ms	117768 KB	Output is correct
84	Correct	1177 ms	117748 KB	Output is correct
85	Correct	1209 ms	117736 KB	Output is correct
86	Correct	1132 ms	117880 KB	Output is correct
87	Correct	1113 ms	117752 KB	Output is correct
88	Correct	1142 ms	117752 KB	Output is correct
89	Correct	1134 ms	117752 KB	Output is correct
90	Correct	1132 ms	117932 KB	Output is correct
91	Correct	1128 ms	117880 KB	Output is correct
92	Correct	1134 ms	117740 KB	Output is correct
93	Correct	1124 ms	117812 KB	Output is correct
94	Correct	1142 ms	117880 KB	Output is correct
95	Correct	1129 ms	117880 KB	Output is correct
96	Correct	1127 ms	117752 KB	Output is correct
97	Correct	1126 ms	118008 KB	Output is correct
98	Correct	1149 ms	117800 KB	Output is correct
99	Correct	1129 ms	117740 KB	Output is correct
100	Correct	753 ms	117868 KB	Output is correct
101	Correct	739 ms	117804 KB	Output is correct
102	Correct	739 ms	117748 KB	Output is correct
103	Correct	720 ms	117728 KB	Output is correct
104	Correct	722 ms	117804 KB	Output is correct
105	Correct	741 ms	117828 KB	Output is correct
106	Correct	774 ms	117808 KB	Output is correct
107	Correct	740 ms	117872 KB	Output is correct
108	Correct	739 ms	117812 KB	Output is correct
109	Correct	745 ms	117792 KB	Output is correct
110	Correct	832 ms	117744 KB	Output is correct
111	Correct	857 ms	117876 KB	Output is correct
112	Correct	871 ms	117804 KB	Output is correct
113	Correct	854 ms	117896 KB	Output is correct
114	Correct	889 ms	117740 KB	Output is correct
115	Correct	833 ms	117724 KB	Output is correct
116	Correct	846 ms	117752 KB	Output is correct
117	Correct	839 ms	117880 KB	Output is correct
118	Correct	892 ms	117984 KB	Output is correct
119	Correct	834 ms	117752 KB	Output is correct
120	Correct	54 ms	55160 KB	Output is correct
121	Correct	52 ms	55160 KB	Output is correct
122	Correct	935 ms	117824 KB	Output is correct
123	Correct	990 ms	117752 KB	Output is correct
124	Correct	941 ms	117832 KB	Output is correct
125	Correct	931 ms	117828 KB	Output is correct
126	Correct	975 ms	117768 KB	Output is correct
127	Correct	977 ms	117832 KB	Output is correct
128	Correct	979 ms	117880 KB	Output is correct
129	Correct	966 ms	117880 KB	Output is correct
130	Correct	981 ms	117880 KB	Output is correct
131	Correct	1027 ms	117880 KB	Output is correct
132	Correct	959 ms	117880 KB	Output is correct
133	Correct	997 ms	117880 KB	Output is correct

답안 #26582

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 20.0 / 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
20.0 / 20.0