oj.uz

Submission #166414

# Submission time Handle Problem Language Result Execution time Memory
166414 2019-12-02T09:42:02 Z socho Arranging Shoes (IOI19_shoes) C++14
100 / 100
 307 ms 30424 KB 
#include "shoes.h"
#include "bits/stdc++.h"
using namespace std;

struct node {

   long long s, e, m, val;
   node *l, *r;
   node (long long _s, long long _e) {
       s = _s;
       e = _e;
       m = (s + e)/2;
       val = 0;
       if (s == e) return;
       l = new node(s, m);
       r = new node(m+1, e);
   }

   void upd(long long p, long long v) {
       if (s == p && s== e) {
           val = v;
           return;
       }
       if (p <= m) {
           l->upd(p, v);
       }
       else {
           r->upd(p, v);
       }
       val = l->val + r->val; // transition
   }

   long long qry(long long qs, long long qe) {
       if (qs <= s && e <= qe) {
           return val;
       }
       else if (qs > e || s > qe) {
           return 0; // base case
       }
       else {
           return l->qry(qs, qe) + r->qry(qs, qe); // transition
       }
   }
   
} *root;

void init(long long N) {
   root = new node(0, N-1);
}

void update(long long P, long long V) {
   root->upd(P, V);
}

long long query(long long A, long long B) {
   return root->qry(A, B);
}

long long count_swaps(vector<int> arr) {
	
	long long sideswaps = 0;
	set<pair<long long, long long> > ope;
	vector<pair<long long, long long> > ind;
	
	for (long long i=0; i<arr.size(); i++) {
		long long num = arr[i];
		long long oth = -num;
		set<pair<long long, long long> >::iterator x = ope.lower_bound(make_pair(oth, LLONG_MIN));
		if (x != ope.end() && x->first == oth) {
			// pair<long long, long long> wi = *x;
			ope.erase(x);
			ind.push_back(make_pair(min(x->second, i), max(i, x->second)));
		}
		else {
			if (num > 0) sideswaps++;
			ope.insert(make_pair(num, i));
		}
	}
	
	sort(ind.begin(), ind.end());
	
	init(arr.size());
	
	long long sw = 0;
	
	for (long long i=0; i<ind.size(); i++) {
		long long a = ind[i].first, b = ind[i].second;
		long long x = b - a - 1;
		x -= query(a, b);
		update(a, 1);
		update(b, 1);
		sw += x;
	}
	
	return sideswaps + sw;
	
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:65:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (long long i=0; i<arr.size(); i++) {
                      ~^~~~~~~~~~~
shoes.cpp:86:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (long long i=0; i<ind.size(); i++) {
                      ~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 4 ms 380 KB Output is correct
6 Correct 2 ms 252 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 380 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 4 ms 380 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 0 ms 376 KB Output is correct
8 Correct 14 ms 448 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 3 ms 632 KB Output is correct
19 Correct 3 ms 632 KB Output is correct
20 Correct 14 ms 3188 KB Output is correct
21 Correct 13 ms 3184 KB Output is correct
22 Correct 133 ms 29800 KB Output is correct
23 Correct 111 ms 29928 KB Output is correct
24 Correct 122 ms 29800 KB Output is correct
25 Correct 165 ms 30200 KB Output is correct
26 Correct 128 ms 29712 KB Output is correct
27 Correct 111 ms 29536 KB Output is correct
28 Correct 162 ms 30236 KB Output is correct
29 Correct 159 ms 30284 KB Output is correct
30 Correct 161 ms 30420 KB Output is correct
31 Correct 130 ms 29772 KB Output is correct
32 Correct 172 ms 30200 KB Output is correct
33 Correct 158 ms 30148 KB Output is correct
34 Correct 161 ms 30316 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 380 KB Output is correct
37 Correct 174 ms 30280 KB Output is correct
38 Correct 171 ms 30272 KB Output is correct
39 Correct 172 ms 30264 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 213 ms 30200 KB Output is correct
6 Correct 219 ms 30332 KB Output is correct
7 Correct 204 ms 30408 KB Output is correct
8 Correct 153 ms 30328 KB Output is correct
9 Correct 205 ms 30200 KB Output is correct
10 Correct 203 ms 30304 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 4 ms 380 KB Output is correct
6 Correct 2 ms 252 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 380 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 4 ms 380 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 256 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 4 ms 552 KB Output is correct
42 Correct 3 ms 632 KB Output is correct
43 Correct 3 ms 632 KB Output is correct
44 Correct 7 ms 632 KB Output is correct
45 Correct 3 ms 632 KB Output is correct
46 Correct 3 ms 632 KB Output is correct
47 Correct 3 ms 632 KB Output is correct
48 Correct 3 ms 632 KB Output is correct
49 Correct 4 ms 632 KB Output is correct
50 Correct 3 ms 632 KB Output is correct
51 Correct 3 ms 632 KB Output is correct
52 Correct 5 ms 632 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 380 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 4 ms 380 KB Output is correct
6 Correct 2 ms 252 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 380 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 380 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 4 ms 380 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 256 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 0 ms 376 KB Output is correct
42 Correct 14 ms 448 KB Output is correct
43 Correct 2 ms 376 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 376 KB Output is correct
46 Correct 2 ms 256 KB Output is correct
47 Correct 2 ms 256 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 256 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 3 ms 632 KB Output is correct
53 Correct 3 ms 632 KB Output is correct
54 Correct 14 ms 3188 KB Output is correct
55 Correct 13 ms 3184 KB Output is correct
56 Correct 133 ms 29800 KB Output is correct
57 Correct 111 ms 29928 KB Output is correct
58 Correct 122 ms 29800 KB Output is correct
59 Correct 165 ms 30200 KB Output is correct
60 Correct 128 ms 29712 KB Output is correct
61 Correct 111 ms 29536 KB Output is correct
62 Correct 162 ms 30236 KB Output is correct
63 Correct 159 ms 30284 KB Output is correct
64 Correct 161 ms 30420 KB Output is correct
65 Correct 130 ms 29772 KB Output is correct
66 Correct 172 ms 30200 KB Output is correct
67 Correct 158 ms 30148 KB Output is correct
68 Correct 161 ms 30316 KB Output is correct
69 Correct 2 ms 376 KB Output is correct
70 Correct 2 ms 380 KB Output is correct
71 Correct 174 ms 30280 KB Output is correct
72 Correct 171 ms 30272 KB Output is correct
73 Correct 172 ms 30264 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 376 KB Output is correct
77 Correct 2 ms 256 KB Output is correct
78 Correct 213 ms 30200 KB Output is correct
79 Correct 219 ms 30332 KB Output is correct
80 Correct 204 ms 30408 KB Output is correct
81 Correct 153 ms 30328 KB Output is correct
82 Correct 205 ms 30200 KB Output is correct
83 Correct 203 ms 30304 KB Output is correct
84 Correct 2 ms 256 KB Output is correct
85 Correct 2 ms 256 KB Output is correct
86 Correct 2 ms 376 KB Output is correct
87 Correct 3 ms 376 KB Output is correct
88 Correct 4 ms 552 KB Output is correct
89 Correct 3 ms 632 KB Output is correct
90 Correct 3 ms 632 KB Output is correct
91 Correct 7 ms 632 KB Output is correct
92 Correct 3 ms 632 KB Output is correct
93 Correct 3 ms 632 KB Output is correct
94 Correct 3 ms 632 KB Output is correct
95 Correct 3 ms 632 KB Output is correct
96 Correct 4 ms 632 KB Output is correct
97 Correct 3 ms 632 KB Output is correct
98 Correct 3 ms 632 KB Output is correct
99 Correct 5 ms 632 KB Output is correct
100 Correct 3 ms 632 KB Output is correct
101 Correct 21 ms 3316 KB Output is correct
102 Correct 20 ms 3320 KB Output is correct
103 Correct 307 ms 29732 KB Output is correct
104 Correct 117 ms 29772 KB Output is correct
105 Correct 163 ms 29800 KB Output is correct
106 Correct 196 ms 30252 KB Output is correct
107 Correct 146 ms 29724 KB Output is correct
108 Correct 115 ms 29800 KB Output is correct
109 Correct 150 ms 30424 KB Output is correct
110 Correct 160 ms 30328 KB Output is correct
111 Correct 209 ms 30220 KB Output is correct
112 Correct 289 ms 29948 KB Output is correct
113 Correct 288 ms 29800 KB Output is correct
114 Correct 204 ms 29868 KB Output is correct
115 Correct 211 ms 29740 KB Output is correct