#include <bits/stdc++.h>
//#define ll long long
using namespace std;
int main()
{
int n, q; cin >> n >> q;
vector <int> pre(n, -1);
int tren=0;
while(q--)
{
int x; cin >> x;
if (x>0)
{
if (pre[x]!=tren) pre[x]=tren;
else
{
tren++;
pre[x]=tren;
}
}
else
{
x*=(-1);
pre[x]=(-1);
}
}
cout << tren << endl;
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
27 ms |
432 KB |
Output is correct |
5 |
Correct |
17 ms |
348 KB |
Output is correct |
6 |
Correct |
16 ms |
344 KB |
Output is correct |
7 |
Correct |
31 ms |
416 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
26 ms |
432 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
29 ms |
432 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
16 ms |
428 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
20 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
13 ms |
432 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
25 ms |
436 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
28 ms |
1236 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
27 ms |
440 KB |
Output is correct |
8 |
Correct |
16 ms |
600 KB |
Output is correct |
9 |
Correct |
14 ms |
348 KB |
Output is correct |
10 |
Correct |
17 ms |
348 KB |
Output is correct |
11 |
Correct |
36 ms |
348 KB |
Output is correct |
12 |
Correct |
41 ms |
348 KB |
Output is correct |
13 |
Correct |
26 ms |
604 KB |
Output is correct |
14 |
Correct |
30 ms |
1116 KB |
Output is correct |
15 |
Correct |
39 ms |
1236 KB |
Output is correct |
16 |
Correct |
38 ms |
1232 KB |
Output is correct |
17 |
Correct |
0 ms |
344 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
27 ms |
1116 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
56 ms |
1228 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
1116 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 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 |
344 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 |
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 |
0 ms |
344 KB |
Output is correct |
17 |
Correct |
0 ms |
348 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 |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
27 ms |
432 KB |
Output is correct |
5 |
Correct |
17 ms |
348 KB |
Output is correct |
6 |
Correct |
16 ms |
344 KB |
Output is correct |
7 |
Correct |
31 ms |
416 KB |
Output is correct |
8 |
Correct |
1 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
348 KB |
Output is correct |
10 |
Correct |
26 ms |
432 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
29 ms |
432 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
16 ms |
428 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
20 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
13 ms |
432 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 |
25 ms |
436 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
28 ms |
1236 KB |
Output is correct |
26 |
Correct |
0 ms |
1116 KB |
Output is correct |
27 |
Correct |
27 ms |
440 KB |
Output is correct |
28 |
Correct |
16 ms |
600 KB |
Output is correct |
29 |
Correct |
14 ms |
348 KB |
Output is correct |
30 |
Correct |
17 ms |
348 KB |
Output is correct |
31 |
Correct |
36 ms |
348 KB |
Output is correct |
32 |
Correct |
41 ms |
348 KB |
Output is correct |
33 |
Correct |
26 ms |
604 KB |
Output is correct |
34 |
Correct |
30 ms |
1116 KB |
Output is correct |
35 |
Correct |
39 ms |
1236 KB |
Output is correct |
36 |
Correct |
38 ms |
1232 KB |
Output is correct |
37 |
Correct |
0 ms |
344 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
27 ms |
1116 KB |
Output is correct |
40 |
Correct |
0 ms |
348 KB |
Output is correct |
41 |
Correct |
56 ms |
1228 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
1 ms |
1116 KB |
Output is correct |
44 |
Correct |
0 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 |
0 ms |
348 KB |
Output is correct |
51 |
Correct |
0 ms |
344 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 |
348 KB |
Output is correct |
58 |
Correct |
0 ms |
348 KB |
Output is correct |
59 |
Correct |
1 ms |
348 KB |
Output is correct |
60 |
Correct |
0 ms |
344 KB |
Output is correct |
61 |
Correct |
0 ms |
348 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 |
1 ms |
348 KB |
Output is correct |
67 |
Correct |
0 ms |
348 KB |
Output is correct |
68 |
Correct |
0 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 |
18 ms |
348 KB |
Output is correct |
73 |
Correct |
16 ms |
428 KB |
Output is correct |
74 |
Correct |
17 ms |
348 KB |
Output is correct |
75 |
Correct |
16 ms |
432 KB |
Output is correct |
76 |
Correct |
0 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
13 ms |
432 KB |
Output is correct |
79 |
Correct |
0 ms |
348 KB |
Output is correct |
80 |
Correct |
15 ms |
436 KB |
Output is correct |
81 |
Correct |
0 ms |
348 KB |
Output is correct |
82 |
Correct |
16 ms |
436 KB |
Output is correct |
83 |
Correct |
0 ms |
348 KB |
Output is correct |
84 |
Correct |
30 ms |
688 KB |
Output is correct |
85 |
Correct |
0 ms |
348 KB |
Output is correct |
86 |
Correct |
15 ms |
440 KB |
Output is correct |
87 |
Correct |
0 ms |
344 KB |
Output is correct |
88 |
Correct |
30 ms |
1240 KB |
Output is correct |
89 |
Correct |
1 ms |
1116 KB |
Output is correct |
90 |
Correct |
15 ms |
348 KB |
Output is correct |
91 |
Correct |
14 ms |
432 KB |
Output is correct |
92 |
Correct |
14 ms |
344 KB |
Output is correct |
93 |
Correct |
16 ms |
432 KB |
Output is correct |
94 |
Correct |
33 ms |
348 KB |
Output is correct |
95 |
Correct |
22 ms |
344 KB |
Output is correct |
96 |
Correct |
45 ms |
600 KB |
Output is correct |
97 |
Correct |
29 ms |
1116 KB |
Output is correct |
98 |
Correct |
30 ms |
1228 KB |
Output is correct |
99 |
Correct |
28 ms |
1116 KB |
Output is correct |
100 |
Correct |
0 ms |
348 KB |
Output is correct |
101 |
Correct |
0 ms |
348 KB |
Output is correct |
102 |
Correct |
27 ms |
1116 KB |
Output is correct |
103 |
Correct |
0 ms |
348 KB |
Output is correct |
104 |
Correct |
38 ms |
1224 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 |
0 ms |
348 KB |
Output is correct |
109 |
Correct |
0 ms |
348 KB |
Output is correct |
110 |
Correct |
1 ms |
344 KB |
Output is correct |
111 |
Correct |
0 ms |
508 KB |
Output is correct |
112 |
Correct |
38 ms |
1112 KB |
Output is correct |
113 |
Correct |
34 ms |
636 KB |
Output is correct |
114 |
Correct |
31 ms |
1116 KB |
Output is correct |
115 |
Correct |
38 ms |
344 KB |
Output is correct |
116 |
Correct |
30 ms |
1112 KB |
Output is correct |
117 |
Correct |
0 ms |
1116 KB |
Output is correct |
118 |
Correct |
18 ms |
436 KB |
Output is correct |
119 |
Correct |
18 ms |
348 KB |
Output is correct |
120 |
Correct |
16 ms |
348 KB |
Output is correct |
121 |
Correct |
35 ms |
348 KB |
Output is correct |
122 |
Correct |
21 ms |
348 KB |
Output is correct |
123 |
Correct |
25 ms |
348 KB |
Output is correct |
124 |
Correct |
30 ms |
604 KB |
Output is correct |
125 |
Correct |
37 ms |
1232 KB |
Output is correct |
126 |
Correct |
32 ms |
1116 KB |
Output is correct |
127 |
Correct |
32 ms |
1228 KB |
Output is correct |
128 |
Correct |
54 ms |
1364 KB |
Output is correct |
129 |
Correct |
31 ms |
1116 KB |
Output is correct |
130 |
Correct |
0 ms |
344 KB |
Output is correct |
131 |
Correct |
0 ms |
344 KB |
Output is correct |
132 |
Correct |
0 ms |
344 KB |
Output is correct |
133 |
Correct |
0 ms |
1116 KB |
Output is correct |
134 |
Correct |
0 ms |
348 KB |
Output is correct |