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Submission #1027280

# Submission time Handle Problem Language Result Execution time Memory
1027280 2024-07-19T03:11:28 Z khanhtb Binaria (CCO23_day1problem1) C++14
25 / 25
 69 ms 31648 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned long long
#define ld long double
#define pb push_back
#define pf push_front
#define vi vector<ll>
#define vii vector<vi>
#define pll pair<ll, ll>
#define vpll vector<pll>
#define all(a) a.begin(), a.end()
#define fi first
#define se second
using namespace std;
const ll mod = 1e6 + 3;
const ll inf = 2e18;
const ll blocksz = 320;
const ll N = 1e6 + 1;
ll n,fac[N],invfac[N];
ll bipow(ll a, ll b){
    ll ans = 1;
    while(b){
        if(b&1) ans = ans*a%mod;
        a = a*a%mod;
        b>>=1;
    }
    return ans;
}
void precalc(){
    fac[0] = 1;
    for(ll i = 1; i < N; i++) fac[i] = fac[i-1]*i%mod;
    invfac[N-1] = bipow(fac[N-1],mod-2);
    for(ll i = N-2; i >= 0; i--) invfac[i] = invfac[i+1]*(i+1)%mod;
}
ll C(ll k, ll n){
    if(k > n || k < 0) return 0;
    return ((fac[n]*invfac[k])%mod)*invfac[n-k]%mod;
}
ll k,a[N];
ll d[N];
void solve(){
    cin >> n >> k;
    fill(a,a+n+1,-1);
    for(ll i = 1; i <= n-k+1; i++) cin >> d[i];
    for(ll i = n-k; i >= 1; i--){
        if(abs(d[i]-d[i+1]) > 1){
            cout << 0;
            return;
        }
        if(d[i] > d[i+1]){
            if(a[i+k] == 1){
                cout << 0;
                return;
            }
            a[i] = 1;
        }
        else if(d[i] < d[i+1]){
            if(a[i+k] == 0){
                cout << 0;
                return;
            }
            a[i] = 0;
        }
        else if(d[i] == d[i+1]) a[i] = a[i+k];
    }
    precalc();
    ll cnt = 0;
    ll n1 = d[1];
    for(ll i = 1; i <= k; i++){
        if(a[i] == -1) cnt++;
        if(a[i] == 1) n1--;
    }
    cout << C(n1,cnt);
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen("test.inp", "r")){
        freopen("test.inp", "r", stdin);
        freopen("test.out", "w", stdout);
    }
    ll T = 1;
    // cin >> T;
    for (ll i = 1; i <= T; i++){
        solve();
        cout << '\n';
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:80:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   80 |         freopen("test.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:81:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |         freopen("test.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19032 KB Output is correct
2 Correct 11 ms 19036 KB Output is correct
3 Correct 11 ms 19164 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 11 ms 19032 KB Output is correct
6 Correct 11 ms 19036 KB Output is correct
7 Correct 11 ms 19032 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 11 ms 19164 KB Output is correct
10 Correct 11 ms 19108 KB Output is correct
11 Correct 11 ms 19180 KB Output is correct
12 Correct 12 ms 19032 KB Output is correct

Subtask #2
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19032 KB Output is correct
2 Correct 11 ms 19036 KB Output is correct
3 Correct 11 ms 19164 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 11 ms 19032 KB Output is correct
6 Correct 11 ms 19036 KB Output is correct
7 Correct 11 ms 19032 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 11 ms 19164 KB Output is correct
10 Correct 11 ms 19108 KB Output is correct
11 Correct 11 ms 19180 KB Output is correct
12 Correct 12 ms 19032 KB Output is correct
13 Correct 13 ms 19292 KB Output is correct
14 Correct 11 ms 19036 KB Output is correct
15 Correct 11 ms 19036 KB Output is correct
16 Correct 12 ms 19036 KB Output is correct
17 Correct 12 ms 19032 KB Output is correct
18 Correct 11 ms 19276 KB Output is correct
19 Correct 11 ms 19036 KB Output is correct
20 Correct 11 ms 19036 KB Output is correct
21 Correct 11 ms 19268 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19032 KB Output is correct
2 Correct 11 ms 19036 KB Output is correct
3 Correct 11 ms 19164 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 11 ms 19032 KB Output is correct
6 Correct 11 ms 19036 KB Output is correct
7 Correct 11 ms 19032 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 11 ms 19164 KB Output is correct
10 Correct 11 ms 19108 KB Output is correct
11 Correct 11 ms 19180 KB Output is correct
12 Correct 12 ms 19032 KB Output is correct
13 Correct 13 ms 19292 KB Output is correct
14 Correct 11 ms 19036 KB Output is correct
15 Correct 11 ms 19036 KB Output is correct
16 Correct 12 ms 19036 KB Output is correct
17 Correct 12 ms 19032 KB Output is correct
18 Correct 11 ms 19276 KB Output is correct
19 Correct 11 ms 19036 KB Output is correct
20 Correct 11 ms 19036 KB Output is correct
21 Correct 11 ms 19268 KB Output is correct
22 Correct 11 ms 19036 KB Output is correct
23 Correct 11 ms 19288 KB Output is correct
24 Correct 11 ms 19036 KB Output is correct
25 Correct 11 ms 19036 KB Output is correct
26 Correct 11 ms 19036 KB Output is correct
27 Correct 12 ms 19180 KB Output is correct
28 Correct 11 ms 19036 KB Output is correct
29 Correct 11 ms 19292 KB Output is correct
30 Correct 12 ms 19180 KB Output is correct
31 Correct 11 ms 19036 KB Output is correct
32 Correct 11 ms 19292 KB Output is correct
33 Correct 11 ms 19036 KB Output is correct
34 Correct 11 ms 19036 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19032 KB Output is correct
2 Correct 11 ms 19036 KB Output is correct
3 Correct 11 ms 19164 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 11 ms 19032 KB Output is correct
6 Correct 11 ms 19036 KB Output is correct
7 Correct 11 ms 19032 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 11 ms 19164 KB Output is correct
10 Correct 11 ms 19108 KB Output is correct
11 Correct 11 ms 19180 KB Output is correct
12 Correct 12 ms 19032 KB Output is correct
13 Correct 13 ms 19292 KB Output is correct
14 Correct 11 ms 19036 KB Output is correct
15 Correct 11 ms 19036 KB Output is correct
16 Correct 12 ms 19036 KB Output is correct
17 Correct 12 ms 19032 KB Output is correct
18 Correct 11 ms 19276 KB Output is correct
19 Correct 11 ms 19036 KB Output is correct
20 Correct 11 ms 19036 KB Output is correct
21 Correct 11 ms 19268 KB Output is correct
22 Correct 11 ms 19036 KB Output is correct
23 Correct 11 ms 19288 KB Output is correct
24 Correct 11 ms 19036 KB Output is correct
25 Correct 11 ms 19036 KB Output is correct
26 Correct 11 ms 19036 KB Output is correct
27 Correct 12 ms 19180 KB Output is correct
28 Correct 11 ms 19036 KB Output is correct
29 Correct 11 ms 19292 KB Output is correct
30 Correct 12 ms 19180 KB Output is correct
31 Correct 11 ms 19036 KB Output is correct
32 Correct 11 ms 19292 KB Output is correct
33 Correct 11 ms 19036 KB Output is correct
34 Correct 11 ms 19036 KB Output is correct
35 Correct 43 ms 31568 KB Output is correct
36 Correct 50 ms 31568 KB Output is correct
37 Correct 48 ms 31572 KB Output is correct
38 Correct 47 ms 31572 KB Output is correct
39 Correct 42 ms 31568 KB Output is correct
40 Correct 46 ms 31572 KB Output is correct
41 Correct 47 ms 31632 KB Output is correct
42 Correct 44 ms 31644 KB Output is correct
43 Correct 43 ms 31568 KB Output is correct
44 Correct 43 ms 31632 KB Output is correct
45 Correct 55 ms 31640 KB Output is correct
46 Correct 43 ms 31648 KB Output is correct
47 Correct 43 ms 31636 KB Output is correct
48 Correct 49 ms 31636 KB Output is correct
49 Correct 52 ms 31572 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19032 KB Output is correct
2 Correct 11 ms 19036 KB Output is correct
3 Correct 11 ms 19164 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 11 ms 19032 KB Output is correct
6 Correct 11 ms 19036 KB Output is correct
7 Correct 11 ms 19032 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 11 ms 19164 KB Output is correct
10 Correct 11 ms 19108 KB Output is correct
11 Correct 11 ms 19180 KB Output is correct
12 Correct 12 ms 19032 KB Output is correct
13 Correct 13 ms 19292 KB Output is correct
14 Correct 11 ms 19036 KB Output is correct
15 Correct 11 ms 19036 KB Output is correct
16 Correct 12 ms 19036 KB Output is correct
17 Correct 12 ms 19032 KB Output is correct
18 Correct 11 ms 19276 KB Output is correct
19 Correct 11 ms 19036 KB Output is correct
20 Correct 11 ms 19036 KB Output is correct
21 Correct 11 ms 19268 KB Output is correct
22 Correct 11 ms 19036 KB Output is correct
23 Correct 11 ms 19288 KB Output is correct
24 Correct 11 ms 19036 KB Output is correct
25 Correct 11 ms 19036 KB Output is correct
26 Correct 11 ms 19036 KB Output is correct
27 Correct 12 ms 19180 KB Output is correct
28 Correct 11 ms 19036 KB Output is correct
29 Correct 11 ms 19292 KB Output is correct
30 Correct 12 ms 19180 KB Output is correct
31 Correct 11 ms 19036 KB Output is correct
32 Correct 11 ms 19292 KB Output is correct
33 Correct 11 ms 19036 KB Output is correct
34 Correct 11 ms 19036 KB Output is correct
35 Correct 43 ms 31568 KB Output is correct
36 Correct 50 ms 31568 KB Output is correct
37 Correct 48 ms 31572 KB Output is correct
38 Correct 47 ms 31572 KB Output is correct
39 Correct 42 ms 31568 KB Output is correct
40 Correct 46 ms 31572 KB Output is correct
41 Correct 47 ms 31632 KB Output is correct
42 Correct 44 ms 31644 KB Output is correct
43 Correct 43 ms 31568 KB Output is correct
44 Correct 43 ms 31632 KB Output is correct
45 Correct 55 ms 31640 KB Output is correct
46 Correct 43 ms 31648 KB Output is correct
47 Correct 43 ms 31636 KB Output is correct
48 Correct 49 ms 31636 KB Output is correct
49 Correct 52 ms 31572 KB Output is correct
50 Correct 55 ms 31572 KB Output is correct
51 Correct 55 ms 31640 KB Output is correct
52 Correct 69 ms 31572 KB Output is correct
53 Correct 53 ms 31568 KB Output is correct
54 Correct 53 ms 31572 KB Output is correct
55 Correct 67 ms 31572 KB Output is correct
56 Correct 68 ms 31632 KB Output is correct
57 Correct 48 ms 31572 KB Output is correct
58 Correct 51 ms 31636 KB Output is correct
59 Correct 60 ms 31568 KB Output is correct
60 Correct 59 ms 31572 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19032 KB Output is correct
2 Correct 11 ms 19036 KB Output is correct
3 Correct 11 ms 19164 KB Output is correct
4 Correct 11 ms 19036 KB Output is correct
5 Correct 11 ms 19032 KB Output is correct
6 Correct 11 ms 19036 KB Output is correct
7 Correct 11 ms 19032 KB Output is correct
8 Correct 11 ms 19036 KB Output is correct
9 Correct 11 ms 19164 KB Output is correct
10 Correct 11 ms 19108 KB Output is correct
11 Correct 11 ms 19180 KB Output is correct
12 Correct 12 ms 19032 KB Output is correct
13 Correct 13 ms 19292 KB Output is correct
14 Correct 11 ms 19036 KB Output is correct
15 Correct 11 ms 19036 KB Output is correct
16 Correct 12 ms 19036 KB Output is correct
17 Correct 12 ms 19032 KB Output is correct
18 Correct 11 ms 19276 KB Output is correct
19 Correct 11 ms 19036 KB Output is correct
20 Correct 11 ms 19036 KB Output is correct
21 Correct 11 ms 19268 KB Output is correct
22 Correct 11 ms 19036 KB Output is correct
23 Correct 11 ms 19288 KB Output is correct
24 Correct 11 ms 19036 KB Output is correct
25 Correct 11 ms 19036 KB Output is correct
26 Correct 11 ms 19036 KB Output is correct
27 Correct 12 ms 19180 KB Output is correct
28 Correct 11 ms 19036 KB Output is correct
29 Correct 11 ms 19292 KB Output is correct
30 Correct 12 ms 19180 KB Output is correct
31 Correct 11 ms 19036 KB Output is correct
32 Correct 11 ms 19292 KB Output is correct
33 Correct 11 ms 19036 KB Output is correct
34 Correct 11 ms 19036 KB Output is correct
35 Correct 43 ms 31568 KB Output is correct
36 Correct 50 ms 31568 KB Output is correct
37 Correct 48 ms 31572 KB Output is correct
38 Correct 47 ms 31572 KB Output is correct
39 Correct 42 ms 31568 KB Output is correct
40 Correct 46 ms 31572 KB Output is correct
41 Correct 47 ms 31632 KB Output is correct
42 Correct 44 ms 31644 KB Output is correct
43 Correct 43 ms 31568 KB Output is correct
44 Correct 43 ms 31632 KB Output is correct
45 Correct 55 ms 31640 KB Output is correct
46 Correct 43 ms 31648 KB Output is correct
47 Correct 43 ms 31636 KB Output is correct
48 Correct 49 ms 31636 KB Output is correct
49 Correct 52 ms 31572 KB Output is correct
50 Correct 55 ms 31572 KB Output is correct
51 Correct 55 ms 31640 KB Output is correct
52 Correct 69 ms 31572 KB Output is correct
53 Correct 53 ms 31568 KB Output is correct
54 Correct 53 ms 31572 KB Output is correct
55 Correct 67 ms 31572 KB Output is correct
56 Correct 68 ms 31632 KB Output is correct
57 Correct 48 ms 31572 KB Output is correct
58 Correct 51 ms 31636 KB Output is correct
59 Correct 60 ms 31568 KB Output is correct
60 Correct 59 ms 31572 KB Output is correct
61 Correct 12 ms 25432 KB Output is correct
62 Correct 13 ms 25316 KB Output is correct
63 Correct 11 ms 25180 KB Output is correct
64 Correct 12 ms 25436 KB Output is correct
65 Correct 35 ms 29588 KB Output is correct
66 Correct 30 ms 29592 KB Output is correct
67 Correct 56 ms 31568 KB Output is correct
68 Correct 16 ms 27480 KB Output is correct
69 Correct 13 ms 25324 KB Output is correct
70 Correct 12 ms 25428 KB Output is correct
71 Correct 11 ms 25436 KB Output is correct