#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define PUT(a, b) freopen(a, "r", stdin); freopen(b, "w", stdout);
#define all(a) a.begin(), a.end()
#define answerNO {cout << "NO" << endl;}
#define answerYES {cout << "YES" << endl;}
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
using namespace __gnu_pbds;
#define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
ll mod = 1e9 + 7;
void solve(){
ll n, q; cin >> n >> q;
set<ll> s;
ll ans = 0;
while(q--){
int x; cin >> x;
if(x < 0){
s.erase(-x);
}
else{
if(s.find(x) != s.end()){
ans++;
s.clear();
}
s.insert(x);
}
}
cout << ans << "\n";
}
signed main() {
ios_base::sync_with_stdio(false);
cin.tie(NULL), cout.tie(NULL);
//PUT("traffic.in", "traffic.out");
int t = 1;
//cin >> t;
while(t--){
solve();
}
}
# |
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 |
10 ms |
456 KB |
Output is correct |
5 |
Correct |
10 ms |
456 KB |
Output is correct |
6 |
Correct |
10 ms |
452 KB |
Output is correct |
7 |
Correct |
10 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 |
10 ms |
456 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
9 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
10 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
10 ms |
464 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
12 ms |
460 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 |
9 ms |
456 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
61 ms |
9800 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
11 ms |
348 KB |
Output is correct |
8 |
Correct |
12 ms |
828 KB |
Output is correct |
9 |
Correct |
13 ms |
604 KB |
Output is correct |
10 |
Correct |
16 ms |
948 KB |
Output is correct |
11 |
Correct |
19 ms |
1116 KB |
Output is correct |
12 |
Correct |
30 ms |
1336 KB |
Output is correct |
13 |
Correct |
27 ms |
1624 KB |
Output is correct |
14 |
Correct |
31 ms |
1768 KB |
Output is correct |
15 |
Correct |
31 ms |
1616 KB |
Output is correct |
16 |
Correct |
30 ms |
1628 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
17 ms |
1628 KB |
Output is correct |
20 |
Correct |
0 ms |
460 KB |
Output is correct |
21 |
Correct |
14 ms |
1592 KB |
Output is correct |
22 |
Correct |
0 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 |
344 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 |
1 ms |
600 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 |
360 KB |
Output is correct |
14 |
Correct |
1 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 |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
456 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 |
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 |
10 ms |
456 KB |
Output is correct |
5 |
Correct |
10 ms |
456 KB |
Output is correct |
6 |
Correct |
10 ms |
452 KB |
Output is correct |
7 |
Correct |
10 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 |
10 ms |
456 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
9 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
10 ms |
348 KB |
Output is correct |
15 |
Correct |
1 ms |
348 KB |
Output is correct |
16 |
Correct |
10 ms |
464 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
12 ms |
460 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 |
9 ms |
456 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
61 ms |
9800 KB |
Output is correct |
26 |
Correct |
0 ms |
348 KB |
Output is correct |
27 |
Correct |
11 ms |
348 KB |
Output is correct |
28 |
Correct |
12 ms |
828 KB |
Output is correct |
29 |
Correct |
13 ms |
604 KB |
Output is correct |
30 |
Correct |
16 ms |
948 KB |
Output is correct |
31 |
Correct |
19 ms |
1116 KB |
Output is correct |
32 |
Correct |
30 ms |
1336 KB |
Output is correct |
33 |
Correct |
27 ms |
1624 KB |
Output is correct |
34 |
Correct |
31 ms |
1768 KB |
Output is correct |
35 |
Correct |
31 ms |
1616 KB |
Output is correct |
36 |
Correct |
30 ms |
1628 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
17 ms |
1628 KB |
Output is correct |
40 |
Correct |
0 ms |
460 KB |
Output is correct |
41 |
Correct |
14 ms |
1592 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
348 KB |
Output is correct |
44 |
Correct |
0 ms |
348 KB |
Output is correct |
45 |
Correct |
0 ms |
344 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 |
600 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 |
360 KB |
Output is correct |
58 |
Correct |
1 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 |
0 ms |
348 KB |
Output is correct |
62 |
Correct |
0 ms |
456 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 |
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 |
10 ms |
948 KB |
Output is correct |
73 |
Correct |
10 ms |
820 KB |
Output is correct |
74 |
Correct |
10 ms |
860 KB |
Output is correct |
75 |
Correct |
10 ms |
860 KB |
Output is correct |
76 |
Correct |
0 ms |
348 KB |
Output is correct |
77 |
Correct |
0 ms |
348 KB |
Output is correct |
78 |
Correct |
9 ms |
824 KB |
Output is correct |
79 |
Correct |
0 ms |
348 KB |
Output is correct |
80 |
Correct |
9 ms |
720 KB |
Output is correct |
81 |
Correct |
0 ms |
348 KB |
Output is correct |
82 |
Correct |
10 ms |
860 KB |
Output is correct |
83 |
Correct |
0 ms |
460 KB |
Output is correct |
84 |
Correct |
10 ms |
860 KB |
Output is correct |
85 |
Correct |
0 ms |
600 KB |
Output is correct |
86 |
Correct |
12 ms |
604 KB |
Output is correct |
87 |
Correct |
0 ms |
452 KB |
Output is correct |
88 |
Correct |
61 ms |
10836 KB |
Output is correct |
89 |
Correct |
1 ms |
348 KB |
Output is correct |
90 |
Correct |
13 ms |
828 KB |
Output is correct |
91 |
Correct |
11 ms |
696 KB |
Output is correct |
92 |
Correct |
12 ms |
604 KB |
Output is correct |
93 |
Correct |
15 ms |
984 KB |
Output is correct |
94 |
Correct |
19 ms |
956 KB |
Output is correct |
95 |
Correct |
23 ms |
1388 KB |
Output is correct |
96 |
Correct |
28 ms |
1364 KB |
Output is correct |
97 |
Correct |
30 ms |
1620 KB |
Output is correct |
98 |
Correct |
31 ms |
1636 KB |
Output is correct |
99 |
Correct |
30 ms |
1628 KB |
Output is correct |
100 |
Correct |
0 ms |
348 KB |
Output is correct |
101 |
Correct |
0 ms |
348 KB |
Output is correct |
102 |
Correct |
18 ms |
1592 KB |
Output is correct |
103 |
Correct |
0 ms |
348 KB |
Output is correct |
104 |
Correct |
14 ms |
1588 KB |
Output is correct |
105 |
Correct |
0 ms |
348 KB |
Output is correct |
106 |
Correct |
0 ms |
348 KB |
Output is correct |
107 |
Correct |
1 ms |
456 KB |
Output is correct |
108 |
Correct |
0 ms |
348 KB |
Output is correct |
109 |
Correct |
0 ms |
348 KB |
Output is correct |
110 |
Correct |
0 ms |
348 KB |
Output is correct |
111 |
Correct |
0 ms |
348 KB |
Output is correct |
112 |
Correct |
47 ms |
3508 KB |
Output is correct |
113 |
Correct |
45 ms |
2772 KB |
Output is correct |
114 |
Correct |
41 ms |
6480 KB |
Output is correct |
115 |
Correct |
30 ms |
2388 KB |
Output is correct |
116 |
Correct |
15 ms |
1588 KB |
Output is correct |
117 |
Correct |
0 ms |
348 KB |
Output is correct |
118 |
Correct |
11 ms |
860 KB |
Output is correct |
119 |
Correct |
12 ms |
860 KB |
Output is correct |
120 |
Correct |
14 ms |
860 KB |
Output is correct |
121 |
Correct |
17 ms |
976 KB |
Output is correct |
122 |
Correct |
20 ms |
1088 KB |
Output is correct |
123 |
Correct |
22 ms |
1372 KB |
Output is correct |
124 |
Correct |
24 ms |
1628 KB |
Output is correct |
125 |
Correct |
35 ms |
1864 KB |
Output is correct |
126 |
Correct |
29 ms |
1764 KB |
Output is correct |
127 |
Correct |
27 ms |
1788 KB |
Output is correct |
128 |
Correct |
17 ms |
1624 KB |
Output is correct |
129 |
Correct |
13 ms |
1884 KB |
Output is correct |
130 |
Correct |
0 ms |
348 KB |
Output is correct |
131 |
Correct |
0 ms |
348 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 |