#include <bits/stdc++.h>
using namespace std;
map<int,int>m;
int n, q, x, r;
bool a[200001], b[200001];
int main()
{
cin >> n >> q;
set<int> st;
int ind =0;
for(int i=1;i<=q;i++)
{
int x;
cin>>x;
if(x>0)
{
if(st.find(x)!=st.end())
{
ind++;
st.clear();
st.insert(x);
}
else
st.insert(x);
}
else
{
st.erase(-x);
}
}
cout <<ind;
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
24 ms |
932 KB |
Output is correct |
5 |
Correct |
23 ms |
856 KB |
Output is correct |
6 |
Correct |
22 ms |
860 KB |
Output is correct |
7 |
Correct |
23 ms |
932 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
23 ms |
600 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
22 ms |
808 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
24 ms |
808 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
24 ms |
856 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
22 ms |
680 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
344 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
24 ms |
828 KB |
Output is correct |
3 |
Correct |
1 ms |
440 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
92 ms |
10888 KB |
Output is correct |
6 |
Correct |
0 ms |
344 KB |
Output is correct |
7 |
Correct |
23 ms |
832 KB |
Output is correct |
8 |
Correct |
25 ms |
600 KB |
Output is correct |
9 |
Correct |
26 ms |
604 KB |
Output is correct |
10 |
Correct |
31 ms |
928 KB |
Output is correct |
11 |
Correct |
36 ms |
860 KB |
Output is correct |
12 |
Correct |
42 ms |
1116 KB |
Output is correct |
13 |
Correct |
50 ms |
1360 KB |
Output is correct |
14 |
Correct |
66 ms |
1752 KB |
Output is correct |
15 |
Correct |
56 ms |
1500 KB |
Output is correct |
16 |
Correct |
55 ms |
1740 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
44 ms |
1444 KB |
Output is correct |
20 |
Correct |
0 ms |
344 KB |
Output is correct |
21 |
Correct |
43 ms |
1572 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
596 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
1 ms |
344 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 |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
0 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 |
344 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
344 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
24 ms |
932 KB |
Output is correct |
5 |
Correct |
23 ms |
856 KB |
Output is correct |
6 |
Correct |
22 ms |
860 KB |
Output is correct |
7 |
Correct |
23 ms |
932 KB |
Output is correct |
8 |
Correct |
0 ms |
344 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
23 ms |
600 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
22 ms |
808 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
24 ms |
808 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
24 ms |
856 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
22 ms |
680 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
1 ms |
344 KB |
Output is correct |
21 |
Correct |
0 ms |
348 KB |
Output is correct |
22 |
Correct |
24 ms |
828 KB |
Output is correct |
23 |
Correct |
1 ms |
440 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
92 ms |
10888 KB |
Output is correct |
26 |
Correct |
0 ms |
344 KB |
Output is correct |
27 |
Correct |
23 ms |
832 KB |
Output is correct |
28 |
Correct |
25 ms |
600 KB |
Output is correct |
29 |
Correct |
26 ms |
604 KB |
Output is correct |
30 |
Correct |
31 ms |
928 KB |
Output is correct |
31 |
Correct |
36 ms |
860 KB |
Output is correct |
32 |
Correct |
42 ms |
1116 KB |
Output is correct |
33 |
Correct |
50 ms |
1360 KB |
Output is correct |
34 |
Correct |
66 ms |
1752 KB |
Output is correct |
35 |
Correct |
56 ms |
1500 KB |
Output is correct |
36 |
Correct |
55 ms |
1740 KB |
Output is correct |
37 |
Correct |
0 ms |
344 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
44 ms |
1444 KB |
Output is correct |
40 |
Correct |
0 ms |
344 KB |
Output is correct |
41 |
Correct |
43 ms |
1572 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
596 KB |
Output is correct |
44 |
Correct |
1 ms |
348 KB |
Output is correct |
45 |
Correct |
1 ms |
348 KB |
Output is correct |
46 |
Correct |
0 ms |
348 KB |
Output is correct |
47 |
Correct |
1 ms |
344 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 |
0 ms |
348 KB |
Output is correct |
52 |
Correct |
0 ms |
348 KB |
Output is correct |
53 |
Correct |
0 ms |
348 KB |
Output is correct |
54 |
Correct |
0 ms |
348 KB |
Output is correct |
55 |
Correct |
0 ms |
348 KB |
Output is correct |
56 |
Correct |
0 ms |
348 KB |
Output is correct |
57 |
Correct |
0 ms |
344 KB |
Output is correct |
58 |
Correct |
0 ms |
348 KB |
Output is correct |
59 |
Correct |
0 ms |
348 KB |
Output is correct |
60 |
Correct |
0 ms |
348 KB |
Output is correct |
61 |
Correct |
1 ms |
344 KB |
Output is correct |
62 |
Correct |
0 ms |
348 KB |
Output is correct |
63 |
Correct |
0 ms |
348 KB |
Output is correct |
64 |
Correct |
0 ms |
348 KB |
Output is correct |
65 |
Correct |
0 ms |
348 KB |
Output is correct |
66 |
Correct |
0 ms |
348 KB |
Output is correct |
67 |
Correct |
0 ms |
348 KB |
Output is correct |
68 |
Correct |
1 ms |
348 KB |
Output is correct |
69 |
Correct |
0 ms |
348 KB |
Output is correct |
70 |
Correct |
0 ms |
348 KB |
Output is correct |
71 |
Correct |
0 ms |
348 KB |
Output is correct |
72 |
Correct |
23 ms |
932 KB |
Output is correct |
73 |
Correct |
24 ms |
856 KB |
Output is correct |
74 |
Correct |
24 ms |
856 KB |
Output is correct |
75 |
Correct |
24 ms |
856 KB |
Output is correct |
76 |
Correct |
1 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
22 ms |
608 KB |
Output is correct |
79 |
Correct |
1 ms |
352 KB |
Output is correct |
80 |
Correct |
23 ms |
860 KB |
Output is correct |
81 |
Correct |
1 ms |
348 KB |
Output is correct |
82 |
Correct |
23 ms |
940 KB |
Output is correct |
83 |
Correct |
0 ms |
348 KB |
Output is correct |
84 |
Correct |
24 ms |
860 KB |
Output is correct |
85 |
Correct |
0 ms |
348 KB |
Output is correct |
86 |
Correct |
23 ms |
736 KB |
Output is correct |
87 |
Correct |
0 ms |
348 KB |
Output is correct |
88 |
Correct |
83 ms |
10948 KB |
Output is correct |
89 |
Correct |
0 ms |
352 KB |
Output is correct |
90 |
Correct |
22 ms |
808 KB |
Output is correct |
91 |
Correct |
23 ms |
600 KB |
Output is correct |
92 |
Correct |
25 ms |
600 KB |
Output is correct |
93 |
Correct |
30 ms |
924 KB |
Output is correct |
94 |
Correct |
37 ms |
956 KB |
Output is correct |
95 |
Correct |
44 ms |
1112 KB |
Output is correct |
96 |
Correct |
50 ms |
1472 KB |
Output is correct |
97 |
Correct |
59 ms |
1624 KB |
Output is correct |
98 |
Correct |
53 ms |
1616 KB |
Output is correct |
99 |
Correct |
53 ms |
1740 KB |
Output is correct |
100 |
Correct |
0 ms |
348 KB |
Output is correct |
101 |
Correct |
0 ms |
348 KB |
Output is correct |
102 |
Correct |
39 ms |
1456 KB |
Output is correct |
103 |
Correct |
0 ms |
348 KB |
Output is correct |
104 |
Correct |
40 ms |
1568 KB |
Output is correct |
105 |
Correct |
0 ms |
348 KB |
Output is correct |
106 |
Correct |
0 ms |
348 KB |
Output is correct |
107 |
Correct |
0 ms |
348 KB |
Output is correct |
108 |
Correct |
1 ms |
348 KB |
Output is correct |
109 |
Correct |
0 ms |
344 KB |
Output is correct |
110 |
Correct |
0 ms |
348 KB |
Output is correct |
111 |
Correct |
0 ms |
348 KB |
Output is correct |
112 |
Correct |
72 ms |
3480 KB |
Output is correct |
113 |
Correct |
69 ms |
2640 KB |
Output is correct |
114 |
Correct |
67 ms |
6228 KB |
Output is correct |
115 |
Correct |
53 ms |
2496 KB |
Output is correct |
116 |
Correct |
46 ms |
1568 KB |
Output is correct |
117 |
Correct |
1 ms |
344 KB |
Output is correct |
118 |
Correct |
28 ms |
860 KB |
Output is correct |
119 |
Correct |
24 ms |
804 KB |
Output is correct |
120 |
Correct |
25 ms |
860 KB |
Output is correct |
121 |
Correct |
30 ms |
1000 KB |
Output is correct |
122 |
Correct |
35 ms |
1112 KB |
Output is correct |
123 |
Correct |
43 ms |
1364 KB |
Output is correct |
124 |
Correct |
51 ms |
1676 KB |
Output is correct |
125 |
Correct |
53 ms |
1620 KB |
Output is correct |
126 |
Correct |
52 ms |
1628 KB |
Output is correct |
127 |
Correct |
51 ms |
1620 KB |
Output is correct |
128 |
Correct |
42 ms |
1620 KB |
Output is correct |
129 |
Correct |
39 ms |
1624 KB |
Output is correct |
130 |
Correct |
1 ms |
344 KB |
Output is correct |
131 |
Correct |
0 ms |
344 KB |
Output is correct |
132 |
Correct |
0 ms |
348 KB |
Output is correct |
133 |
Correct |
0 ms |
348 KB |
Output is correct |
134 |
Correct |
0 ms |
348 KB |
Output is correct |