#pragma GCC optimize("O1,O2,O3,Ofast,unroll-loops")
#include <bits/stdc++.h>
#include <string>
#include <iostream>
#include <cmath>
#include <numeric>
#include <stack>
#include <queue>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<ld, ld> pd;
typedef vector<int> vi;
typedef vector<bool> vb;
typedef vector<vector<int>> vvi;
typedef vector<vector<pi>> vvpi;
typedef vector<ld> vd;
typedef vector<long long> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
#define FOR(i, a, b) for (ll i = a; i < (b); i++)
#define F0R(i, a) for (int i = 0; i < (a); i++)
#define FORd(i, a, b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i, a) for (int i = (a)-1; i >= 0; i--)
#define trav(a, x) for (auto &a : x)
#define uid(a, b) uniform_int_distribution<int>(a, b)(rng)
#define len(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define F first
#define nl endl
#define S second
#define lb lower_bound
#define ub upper_bound
#define aint(x) x.begin(), x.end()
#define raint(x) x.rbegin(), x.rend()
#define ins insert
const int M = 1e9+7;
void init(string name)
{
freopen((name + ".in").c_str(), "r", stdin);
freopen((name + ".out").c_str(), "w", stdout);
}
void fastIO()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
}
void solve()
{
int n;cin >> n;
vi arr(n,-1);
int m;cin >> m;
int ans = 0;
FOR(i,0,m){
int a;cin>>a;
if(a>0){
if(arr[a] != ans){
arr[a] = ans;
}else{
ans++;
arr[a] = ans;
}
}
else{
a *= -1;
arr[a] = -1;
}
}
cout << ans << endl;
}
int main()
{
fastIO();
// init("test");
int t = 1;
// cin >> t;
while (t--)
solve();
return 0;
}
Compilation message
Main.cpp: In function 'void init(std::string)':
Main.cpp:44:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
44 | freopen((name + ".in").c_str(), "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:45:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
45 | freopen((name + ".out").c_str(), "w", stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
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 |
7 ms |
456 KB |
Output is correct |
5 |
Correct |
7 ms |
456 KB |
Output is correct |
6 |
Correct |
7 ms |
460 KB |
Output is correct |
7 |
Correct |
8 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 |
5 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
5 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
8 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
8 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
5 ms |
452 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 |
5 ms |
456 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
8 ms |
1256 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
6 ms |
344 KB |
Output is correct |
8 |
Correct |
6 ms |
604 KB |
Output is correct |
9 |
Correct |
6 ms |
600 KB |
Output is correct |
10 |
Correct |
7 ms |
860 KB |
Output is correct |
11 |
Correct |
7 ms |
984 KB |
Output is correct |
12 |
Correct |
8 ms |
1112 KB |
Output is correct |
13 |
Correct |
9 ms |
1628 KB |
Output is correct |
14 |
Correct |
10 ms |
2396 KB |
Output is correct |
15 |
Correct |
11 ms |
2416 KB |
Output is correct |
16 |
Correct |
10 ms |
2396 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
10 ms |
2140 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
11 ms |
2396 KB |
Output is correct |
22 |
Correct |
0 ms |
348 KB |
Output is correct |
23 |
Correct |
0 ms |
1116 KB |
Output is correct |
24 |
Correct |
0 ms |
344 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 |
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 |
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 |
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 |
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 |
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 |
7 ms |
456 KB |
Output is correct |
5 |
Correct |
7 ms |
456 KB |
Output is correct |
6 |
Correct |
7 ms |
460 KB |
Output is correct |
7 |
Correct |
8 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 |
5 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
5 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
8 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
8 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
5 ms |
452 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 |
5 ms |
456 KB |
Output is correct |
23 |
Correct |
0 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
8 ms |
1256 KB |
Output is correct |
26 |
Correct |
0 ms |
1116 KB |
Output is correct |
27 |
Correct |
6 ms |
344 KB |
Output is correct |
28 |
Correct |
6 ms |
604 KB |
Output is correct |
29 |
Correct |
6 ms |
600 KB |
Output is correct |
30 |
Correct |
7 ms |
860 KB |
Output is correct |
31 |
Correct |
7 ms |
984 KB |
Output is correct |
32 |
Correct |
8 ms |
1112 KB |
Output is correct |
33 |
Correct |
9 ms |
1628 KB |
Output is correct |
34 |
Correct |
10 ms |
2396 KB |
Output is correct |
35 |
Correct |
11 ms |
2416 KB |
Output is correct |
36 |
Correct |
10 ms |
2396 KB |
Output is correct |
37 |
Correct |
0 ms |
348 KB |
Output is correct |
38 |
Correct |
0 ms |
348 KB |
Output is correct |
39 |
Correct |
10 ms |
2140 KB |
Output is correct |
40 |
Correct |
0 ms |
348 KB |
Output is correct |
41 |
Correct |
11 ms |
2396 KB |
Output is correct |
42 |
Correct |
0 ms |
348 KB |
Output is correct |
43 |
Correct |
0 ms |
1116 KB |
Output is correct |
44 |
Correct |
0 ms |
344 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 |
0 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 |
348 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 |
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 |
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 |
7 ms |
860 KB |
Output is correct |
73 |
Correct |
7 ms |
804 KB |
Output is correct |
74 |
Correct |
7 ms |
860 KB |
Output is correct |
75 |
Correct |
7 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 |
6 ms |
600 KB |
Output is correct |
79 |
Correct |
0 ms |
348 KB |
Output is correct |
80 |
Correct |
6 ms |
860 KB |
Output is correct |
81 |
Correct |
0 ms |
348 KB |
Output is correct |
82 |
Correct |
7 ms |
800 KB |
Output is correct |
83 |
Correct |
0 ms |
348 KB |
Output is correct |
84 |
Correct |
7 ms |
892 KB |
Output is correct |
85 |
Correct |
0 ms |
344 KB |
Output is correct |
86 |
Correct |
5 ms |
604 KB |
Output is correct |
87 |
Correct |
0 ms |
348 KB |
Output is correct |
88 |
Correct |
9 ms |
2396 KB |
Output is correct |
89 |
Correct |
0 ms |
1116 KB |
Output is correct |
90 |
Correct |
6 ms |
604 KB |
Output is correct |
91 |
Correct |
6 ms |
564 KB |
Output is correct |
92 |
Correct |
6 ms |
604 KB |
Output is correct |
93 |
Correct |
7 ms |
860 KB |
Output is correct |
94 |
Correct |
7 ms |
1056 KB |
Output is correct |
95 |
Correct |
8 ms |
1240 KB |
Output is correct |
96 |
Correct |
9 ms |
1628 KB |
Output is correct |
97 |
Correct |
10 ms |
2524 KB |
Output is correct |
98 |
Correct |
11 ms |
2396 KB |
Output is correct |
99 |
Correct |
10 ms |
2400 KB |
Output is correct |
100 |
Correct |
0 ms |
456 KB |
Output is correct |
101 |
Correct |
0 ms |
348 KB |
Output is correct |
102 |
Correct |
10 ms |
2140 KB |
Output is correct |
103 |
Correct |
0 ms |
348 KB |
Output is correct |
104 |
Correct |
11 ms |
2396 KB |
Output is correct |
105 |
Correct |
1 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 |
0 ms |
348 KB |
Output is correct |
111 |
Correct |
0 ms |
452 KB |
Output is correct |
112 |
Correct |
11 ms |
2396 KB |
Output is correct |
113 |
Correct |
10 ms |
1628 KB |
Output is correct |
114 |
Correct |
10 ms |
2336 KB |
Output is correct |
115 |
Correct |
10 ms |
1628 KB |
Output is correct |
116 |
Correct |
10 ms |
2388 KB |
Output is correct |
117 |
Correct |
1 ms |
1116 KB |
Output is correct |
118 |
Correct |
8 ms |
932 KB |
Output is correct |
119 |
Correct |
7 ms |
904 KB |
Output is correct |
120 |
Correct |
7 ms |
820 KB |
Output is correct |
121 |
Correct |
8 ms |
1076 KB |
Output is correct |
122 |
Correct |
9 ms |
1072 KB |
Output is correct |
123 |
Correct |
9 ms |
1308 KB |
Output is correct |
124 |
Correct |
10 ms |
1640 KB |
Output is correct |
125 |
Correct |
12 ms |
2648 KB |
Output is correct |
126 |
Correct |
11 ms |
2396 KB |
Output is correct |
127 |
Correct |
13 ms |
2320 KB |
Output is correct |
128 |
Correct |
11 ms |
2392 KB |
Output is correct |
129 |
Correct |
11 ms |
2640 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 |
1116 KB |
Output is correct |
134 |
Correct |
0 ms |
348 KB |
Output is correct |