#include <bits/stdc++.h>
#define fi first
#define se second
#define ssize(x) int(x.size())
#define pn printf("\n")
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define vv vector
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
int inf = 2e09; ll infll = 2e18; int mod = 119<<23|1;
struct seg{
int base;
vv<int> t;
void init(int n){
base = 1;
while(base < n) base <<= 1;
t.resize(base<<1, 0);
for(int i = 1; i <= n; ++i) t[i+base-1] = 1;
for(int i = base-1; i; --i) t[i] = t[i<<1]+t[i<<1|1];
}
void update(int i, int val){
for(i += base-1, t[i] = val, i >>= 1; i; i >>= 1) t[i] = t[i<<1]+t[i<<1|1];
}
int query_interval(int i, int s, int e, int x, int y){
if(x <= s && e <= y) return t[i];
int mid = (s+e)>>1, result = 0;
if(x <= mid) result += query_interval(i<<1, s, mid, x, y);
if(mid < y) result += query_interval(i<<1|1, mid+1, e, x, y);
return result;
}
int query(int l, int r){
if(l <= r) return query_interval(1, 1, base, max(1, l), min(base, r));
return 0;
}
};
ll count_swaps(vv<int> t){
int n = ssize(t);
set<int> s;
vv<set<int>> v(n+3);
for(int i = 0; i < n; ++i) t[i] = t[i] > 0 ? 2*t[i]+1 : -2*t[i], s.emplace(i), v[t[i]].emplace(i);
ll result = 0;
seg seg; seg.init(n+2);
for(int i = 0; i < n/2; ++i){
int posx = *s.begin(), x = t[posx];
int posy = *v[x^1].begin();
//~ printf("%d: %d %d: ", x, posx, posy);
if(x & 1) result += seg.query(posx+1, posy);
else result += seg.query(posx+2, posy);
seg.update(posx+1, 0), seg.update(posy+1, 0);
v[x].erase(posx), v[x^1].erase(posy);
s.erase(posx), s.erase(posy);
//~ printf("%lld\n", result);
}
return result;
}
#ifdef LOCAL
int main(){
int T = 1;
for(++T; --T; ){
int n; scanf("%d", &n);
vv<int> t(n<<1);
for(int i = 0; i < n<<1; ++i) scanf("%d", &t[i]);
ll result = count_swaps(t);
printf("%lld\n", result);
}
return 0;
}
#endif
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
500 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
600 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
344 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
532 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
604 KB |
Output is correct |
19 |
Correct |
1 ms |
604 KB |
Output is correct |
20 |
Correct |
12 ms |
3676 KB |
Output is correct |
21 |
Correct |
11 ms |
3676 KB |
Output is correct |
22 |
Correct |
137 ms |
32080 KB |
Output is correct |
23 |
Correct |
118 ms |
32084 KB |
Output is correct |
24 |
Correct |
130 ms |
32076 KB |
Output is correct |
25 |
Correct |
140 ms |
32220 KB |
Output is correct |
26 |
Correct |
158 ms |
33460 KB |
Output is correct |
27 |
Correct |
125 ms |
33108 KB |
Output is correct |
28 |
Correct |
133 ms |
33260 KB |
Output is correct |
29 |
Correct |
132 ms |
33500 KB |
Output is correct |
30 |
Correct |
141 ms |
33500 KB |
Output is correct |
31 |
Correct |
133 ms |
33500 KB |
Output is correct |
32 |
Correct |
134 ms |
33516 KB |
Output is correct |
33 |
Correct |
132 ms |
33304 KB |
Output is correct |
34 |
Correct |
133 ms |
33484 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
1 ms |
600 KB |
Output is correct |
37 |
Correct |
151 ms |
33376 KB |
Output is correct |
38 |
Correct |
132 ms |
33500 KB |
Output is correct |
39 |
Correct |
147 ms |
33308 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
344 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
126 ms |
32024 KB |
Output is correct |
6 |
Correct |
149 ms |
33300 KB |
Output is correct |
7 |
Correct |
149 ms |
33364 KB |
Output is correct |
8 |
Correct |
153 ms |
33364 KB |
Output is correct |
9 |
Correct |
127 ms |
33312 KB |
Output is correct |
10 |
Correct |
151 ms |
33360 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
500 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
600 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
344 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
532 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
1 ms |
348 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
604 KB |
Output is correct |
44 |
Correct |
1 ms |
600 KB |
Output is correct |
45 |
Correct |
2 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
604 KB |
Output is correct |
47 |
Correct |
1 ms |
600 KB |
Output is correct |
48 |
Correct |
2 ms |
604 KB |
Output is correct |
49 |
Correct |
2 ms |
604 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
500 KB |
Output is correct |
10 |
Correct |
1 ms |
344 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
344 KB |
Output is correct |
19 |
Correct |
1 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
0 ms |
600 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
344 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
0 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
1 ms |
344 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
0 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
0 ms |
348 KB |
Output is correct |
36 |
Correct |
0 ms |
532 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
0 ms |
348 KB |
Output is correct |
40 |
Correct |
1 ms |
348 KB |
Output is correct |
41 |
Correct |
0 ms |
348 KB |
Output is correct |
42 |
Correct |
0 ms |
344 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
1 ms |
348 KB |
Output is correct |
45 |
Correct |
0 ms |
348 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
0 ms |
348 KB |
Output is correct |
48 |
Correct |
0 ms |
348 KB |
Output is correct |
49 |
Correct |
0 ms |
348 KB |
Output is correct |
50 |
Correct |
1 ms |
348 KB |
Output is correct |
51 |
Correct |
1 ms |
348 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
604 KB |
Output is correct |
54 |
Correct |
12 ms |
3676 KB |
Output is correct |
55 |
Correct |
11 ms |
3676 KB |
Output is correct |
56 |
Correct |
137 ms |
32080 KB |
Output is correct |
57 |
Correct |
118 ms |
32084 KB |
Output is correct |
58 |
Correct |
130 ms |
32076 KB |
Output is correct |
59 |
Correct |
140 ms |
32220 KB |
Output is correct |
60 |
Correct |
158 ms |
33460 KB |
Output is correct |
61 |
Correct |
125 ms |
33108 KB |
Output is correct |
62 |
Correct |
133 ms |
33260 KB |
Output is correct |
63 |
Correct |
132 ms |
33500 KB |
Output is correct |
64 |
Correct |
141 ms |
33500 KB |
Output is correct |
65 |
Correct |
133 ms |
33500 KB |
Output is correct |
66 |
Correct |
134 ms |
33516 KB |
Output is correct |
67 |
Correct |
132 ms |
33304 KB |
Output is correct |
68 |
Correct |
133 ms |
33484 KB |
Output is correct |
69 |
Correct |
0 ms |
348 KB |
Output is correct |
70 |
Correct |
1 ms |
600 KB |
Output is correct |
71 |
Correct |
151 ms |
33376 KB |
Output is correct |
72 |
Correct |
132 ms |
33500 KB |
Output is correct |
73 |
Correct |
147 ms |
33308 KB |
Output is correct |
74 |
Correct |
1 ms |
344 KB |
Output is correct |
75 |
Correct |
0 ms |
348 KB |
Output is correct |
76 |
Correct |
1 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
126 ms |
32024 KB |
Output is correct |
79 |
Correct |
149 ms |
33300 KB |
Output is correct |
80 |
Correct |
149 ms |
33364 KB |
Output is correct |
81 |
Correct |
153 ms |
33364 KB |
Output is correct |
82 |
Correct |
127 ms |
33312 KB |
Output is correct |
83 |
Correct |
151 ms |
33360 KB |
Output is correct |
84 |
Correct |
0 ms |
348 KB |
Output is correct |
85 |
Correct |
0 ms |
348 KB |
Output is correct |
86 |
Correct |
0 ms |
348 KB |
Output is correct |
87 |
Correct |
1 ms |
348 KB |
Output is correct |
88 |
Correct |
1 ms |
604 KB |
Output is correct |
89 |
Correct |
1 ms |
604 KB |
Output is correct |
90 |
Correct |
1 ms |
604 KB |
Output is correct |
91 |
Correct |
1 ms |
600 KB |
Output is correct |
92 |
Correct |
2 ms |
604 KB |
Output is correct |
93 |
Correct |
1 ms |
604 KB |
Output is correct |
94 |
Correct |
1 ms |
600 KB |
Output is correct |
95 |
Correct |
2 ms |
604 KB |
Output is correct |
96 |
Correct |
2 ms |
604 KB |
Output is correct |
97 |
Correct |
1 ms |
604 KB |
Output is correct |
98 |
Correct |
1 ms |
604 KB |
Output is correct |
99 |
Correct |
1 ms |
604 KB |
Output is correct |
100 |
Correct |
1 ms |
600 KB |
Output is correct |
101 |
Correct |
12 ms |
3928 KB |
Output is correct |
102 |
Correct |
13 ms |
3676 KB |
Output is correct |
103 |
Correct |
187 ms |
33336 KB |
Output is correct |
104 |
Correct |
104 ms |
33480 KB |
Output is correct |
105 |
Correct |
189 ms |
33432 KB |
Output is correct |
106 |
Correct |
139 ms |
33296 KB |
Output is correct |
107 |
Correct |
193 ms |
33320 KB |
Output is correct |
108 |
Correct |
136 ms |
33336 KB |
Output is correct |
109 |
Correct |
132 ms |
33360 KB |
Output is correct |
110 |
Correct |
137 ms |
33364 KB |
Output is correct |
111 |
Correct |
135 ms |
33324 KB |
Output is correct |
112 |
Correct |
168 ms |
33448 KB |
Output is correct |
113 |
Correct |
210 ms |
33472 KB |
Output is correct |
114 |
Correct |
127 ms |
33432 KB |
Output is correct |
115 |
Correct |
131 ms |
33332 KB |
Output is correct |