#include <bits/stdc++.h>
#define inf INT_MAX
#define longlonginf LONG_LONG_MAX
#define mod 1000003
#define MAXN 200005
#define pii pair<ll,ll>
#define ll long long
#define deb(x) cerr<<"[ "<<#x<<" = "<<x<<" ]";
#define yes() cout<<"YES\n";
#define no() cout<<"NO\n";
using namespace std;
ll n,k,m,q,cur;
ll ans = 0;
string subtask;
int tc = 1;
ll binpow(ll x,ll y){
if( y == 0 ) return 1;
ll res = binpow(x,y/2);
res *= res;
res %= mod;
if( y % 2 ) res *= x;
return res%mod;
}
void solve(){
cin>>n>>k;
ll a[n+5];
ll m = n-k+1;
for(int i = 0 ; i < m ; i++){
cin>>a[i];
}
int v[n+5];
for(int i = 0 ; i < n ; i++) v[i] = 2;
for(int i = m-2 ; i >= 0 ; i--){
if( a[i] == a[i+1]-1 ) {
if( v[i+k] == 0 ){
cout<<0<<"\n";
return;
}
v[i] = 0;
}
else if( a[i] == a[i+1]+1 ) {
if( v[i+k] == 1 ){
cout<<0<<"\n";
return;
}
v[i] = 1;
}
else if( a[i] == a[i+1] ){
v[i] = v[i+k];
}
else if( abs(a[i]-a[i+1]) > 1 ){
cout<<0<<"\n";
return;
}
}
ll x = 0, c = a[0];
for(int i = 0 ; i < k ; i++){
if( v[i] == 1 ) c--;
if( v[i] == 2 ) x++;
}
if( x-c < 0 || c < 0 ) {
cout<<0<<"\n";
return;
}
ll fact[k+5];
fact[0] = fact[1] = 1;
for(ll i = 2 ; i <= x ; i++){
fact[i] = fact[i-1]*i;
fact[i] %= mod;
}
ans = fact[x];
ll foo = (fact[c]*fact[x-c])%mod;
ans *= binpow(foo,mod-2);
cout<<ans%mod<<"\n";
}
int main(){
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
int T = 1;
//cin>>T;
for(int i = 0 ; i < T ; i++){
//cout<<"Case #"<<i+1<<": ";
solve();
tc++;
}
return 0;
}
/*
same val different variable
swapped multidimentional size
out of bound for loop
(constraint change in loop)
forget to change bool to int
misread -> missed subtask
you thought u declared it huh?
not i but x
logical operator
wrong example/proof
thoroughly
wrong variables
thinking it wrong
bruh just try some test case
capitals ;-;
wrong data structure lol
count memory usement
corner case
oversized array
orders
statements
size initializer
while con
map -> array
wrong digits??
swapped variables??
check if theres any variabled
that got declared twice
find some pattern
name collision
constraints??!
mod !!
resets
*/
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
456 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 |
1 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 |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
456 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 |
1 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 |
344 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 |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
456 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 |
1 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 |
344 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 |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
456 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 |
1 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 |
344 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 |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
46 ms |
13888 KB |
Output is correct |
36 |
Correct |
48 ms |
14676 KB |
Output is correct |
37 |
Correct |
52 ms |
14928 KB |
Output is correct |
38 |
Correct |
49 ms |
14932 KB |
Output is correct |
39 |
Correct |
39 ms |
14016 KB |
Output is correct |
40 |
Correct |
47 ms |
14908 KB |
Output is correct |
41 |
Correct |
48 ms |
14932 KB |
Output is correct |
42 |
Correct |
47 ms |
14160 KB |
Output is correct |
43 |
Correct |
43 ms |
13908 KB |
Output is correct |
44 |
Correct |
45 ms |
13908 KB |
Output is correct |
45 |
Correct |
42 ms |
14052 KB |
Output is correct |
46 |
Correct |
41 ms |
13912 KB |
Output is correct |
47 |
Correct |
45 ms |
14016 KB |
Output is correct |
48 |
Correct |
47 ms |
14928 KB |
Output is correct |
49 |
Correct |
46 ms |
14932 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
456 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 |
1 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 |
344 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 |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
46 ms |
13888 KB |
Output is correct |
36 |
Correct |
48 ms |
14676 KB |
Output is correct |
37 |
Correct |
52 ms |
14928 KB |
Output is correct |
38 |
Correct |
49 ms |
14932 KB |
Output is correct |
39 |
Correct |
39 ms |
14016 KB |
Output is correct |
40 |
Correct |
47 ms |
14908 KB |
Output is correct |
41 |
Correct |
48 ms |
14932 KB |
Output is correct |
42 |
Correct |
47 ms |
14160 KB |
Output is correct |
43 |
Correct |
43 ms |
13908 KB |
Output is correct |
44 |
Correct |
45 ms |
13908 KB |
Output is correct |
45 |
Correct |
42 ms |
14052 KB |
Output is correct |
46 |
Correct |
41 ms |
13912 KB |
Output is correct |
47 |
Correct |
45 ms |
14016 KB |
Output is correct |
48 |
Correct |
47 ms |
14928 KB |
Output is correct |
49 |
Correct |
46 ms |
14932 KB |
Output is correct |
50 |
Correct |
58 ms |
16944 KB |
Output is correct |
51 |
Correct |
59 ms |
16944 KB |
Output is correct |
52 |
Correct |
58 ms |
16956 KB |
Output is correct |
53 |
Correct |
60 ms |
16944 KB |
Output is correct |
54 |
Correct |
58 ms |
16964 KB |
Output is correct |
55 |
Correct |
58 ms |
16944 KB |
Output is correct |
56 |
Correct |
58 ms |
16964 KB |
Output is correct |
57 |
Correct |
56 ms |
16064 KB |
Output is correct |
58 |
Correct |
59 ms |
16980 KB |
Output is correct |
59 |
Correct |
58 ms |
16976 KB |
Output is correct |
60 |
Correct |
54 ms |
16064 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
348 KB |
Output is correct |
2 |
Correct |
0 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
456 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 |
1 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 |
344 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 |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
348 KB |
Output is correct |
23 |
Correct |
1 ms |
348 KB |
Output is correct |
24 |
Correct |
0 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
1 ms |
348 KB |
Output is correct |
27 |
Correct |
1 ms |
348 KB |
Output is correct |
28 |
Correct |
0 ms |
348 KB |
Output is correct |
29 |
Correct |
0 ms |
348 KB |
Output is correct |
30 |
Correct |
0 ms |
348 KB |
Output is correct |
31 |
Correct |
0 ms |
348 KB |
Output is correct |
32 |
Correct |
0 ms |
348 KB |
Output is correct |
33 |
Correct |
1 ms |
348 KB |
Output is correct |
34 |
Correct |
0 ms |
348 KB |
Output is correct |
35 |
Correct |
46 ms |
13888 KB |
Output is correct |
36 |
Correct |
48 ms |
14676 KB |
Output is correct |
37 |
Correct |
52 ms |
14928 KB |
Output is correct |
38 |
Correct |
49 ms |
14932 KB |
Output is correct |
39 |
Correct |
39 ms |
14016 KB |
Output is correct |
40 |
Correct |
47 ms |
14908 KB |
Output is correct |
41 |
Correct |
48 ms |
14932 KB |
Output is correct |
42 |
Correct |
47 ms |
14160 KB |
Output is correct |
43 |
Correct |
43 ms |
13908 KB |
Output is correct |
44 |
Correct |
45 ms |
13908 KB |
Output is correct |
45 |
Correct |
42 ms |
14052 KB |
Output is correct |
46 |
Correct |
41 ms |
13912 KB |
Output is correct |
47 |
Correct |
45 ms |
14016 KB |
Output is correct |
48 |
Correct |
47 ms |
14928 KB |
Output is correct |
49 |
Correct |
46 ms |
14932 KB |
Output is correct |
50 |
Correct |
58 ms |
16944 KB |
Output is correct |
51 |
Correct |
59 ms |
16944 KB |
Output is correct |
52 |
Correct |
58 ms |
16956 KB |
Output is correct |
53 |
Correct |
60 ms |
16944 KB |
Output is correct |
54 |
Correct |
58 ms |
16964 KB |
Output is correct |
55 |
Correct |
58 ms |
16944 KB |
Output is correct |
56 |
Correct |
58 ms |
16964 KB |
Output is correct |
57 |
Correct |
56 ms |
16064 KB |
Output is correct |
58 |
Correct |
59 ms |
16980 KB |
Output is correct |
59 |
Correct |
58 ms |
16976 KB |
Output is correct |
60 |
Correct |
54 ms |
16064 KB |
Output is correct |
61 |
Correct |
18 ms |
19800 KB |
Output is correct |
62 |
Correct |
18 ms |
19800 KB |
Output is correct |
63 |
Correct |
18 ms |
19804 KB |
Output is correct |
64 |
Correct |
17 ms |
19804 KB |
Output is correct |
65 |
Correct |
42 ms |
19392 KB |
Output is correct |
66 |
Correct |
34 ms |
19900 KB |
Output is correct |
67 |
Correct |
58 ms |
19024 KB |
Output is correct |
68 |
Correct |
21 ms |
19548 KB |
Output is correct |
69 |
Correct |
17 ms |
19804 KB |
Output is correct |
70 |
Correct |
17 ms |
19804 KB |
Output is correct |
71 |
Correct |
17 ms |
19960 KB |
Output is correct |