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Submission #932849

# Submission time Handle Problem Language Result Execution time Memory
932849 2024-02-24T10:07:52 Z Son Binaria (CCO23_day1problem1) C++14
25 / 25
 304 ms 21052 KB 
#include <bits/stdc++.h>
using namespace std;
#define LL long long
#define pb push_back
#define fi first
#define se second
#define mp make_pair

int n,k;
int A[1000005];
int fact[1000005], inv[1000005];
int mo = 1e6 + 3;
int B[1000005];

int expo( int a, int b ){
    if ( b == 0 ) return 1;
    int half = expo(a,b/2);
    half = ( 1LL * half * half ) % mo;
    if ( b & 1 ){
        half = ( 1LL * half * a ) % mo;
    }
    return half;
}

int C( int N, int K ){
    if ( K > N || K < 0 ) return 0;
    int ans = (fact[N] * 1LL * inv[K]) % mo;
    ans = ( ans * 1LL * inv[N-K] ) % mo;
    return ans; 
}

void fail(){
    printf("0\n");
    exit(0);
}

int main(){
    
    scanf("%d%d",&n,&k);
    for ( int i = 1; i <= n-k+1; i++ ){
        scanf("%d",&A[i]);
    }

    fact[0] = inv[0] = 1;
    for ( int i = 1; i <= n; i++ ){
        fact[i] = ( fact[i-1] * 1LL * i ) % mo;
        inv[i] = expo(fact[i], mo - 2) % mo;
        B[i] = 2;
    }

    for ( int i = n-k; i >= 1; i-- ){
        if ( abs(A[i] - A[i+1]) > 1 ){
            fail();
        }
        if ( A[i] > A[i+1] ){
            if ( B[i+k] == 1 ){
                fail();
            }
            B[i] = 1;
        } else if ( A[i] < A[i+1] ){
            if ( B[i+k] == 0 ){
                fail();
            }
            B[i] = 0;
        } else {
            B[i] = B[i+k];
        }
    }    
    
    int N = 0, K = A[1];
    for ( int i = 1; i <= k; i++ ){
        if ( B[i] == 1 ){
            K--;
        } 
        if ( B[i] == 2 ){
            N++;
        }
    }
    printf("%d\n",C(N,K));
    return 0;
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     scanf("%d%d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~
Main.cpp:41:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |         scanf("%d",&A[i]);
      |         ~~~~~^~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6588 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #2
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6588 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct

Subtask #3
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6588 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 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 1 ms 6492 KB Output is correct
29 Correct 2 ms 6492 KB Output is correct
30 Correct 2 ms 6492 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct

Subtask #4
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6588 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 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 1 ms 6492 KB Output is correct
29 Correct 2 ms 6492 KB Output is correct
30 Correct 2 ms 6492 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 265 ms 17920 KB Output is correct
36 Correct 276 ms 18660 KB Output is correct
37 Correct 271 ms 18876 KB Output is correct
38 Correct 264 ms 18764 KB Output is correct
39 Correct 264 ms 18028 KB Output is correct
40 Correct 264 ms 18768 KB Output is correct
41 Correct 264 ms 18840 KB Output is correct
42 Correct 260 ms 18024 KB Output is correct
43 Correct 265 ms 18000 KB Output is correct
44 Correct 268 ms 17964 KB Output is correct
45 Correct 263 ms 18000 KB Output is correct
46 Correct 262 ms 18004 KB Output is correct
47 Correct 293 ms 18004 KB Output is correct
48 Correct 266 ms 18880 KB Output is correct
49 Correct 279 ms 19004 KB Output is correct

Subtask #5
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6588 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 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 1 ms 6492 KB Output is correct
29 Correct 2 ms 6492 KB Output is correct
30 Correct 2 ms 6492 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 265 ms 17920 KB Output is correct
36 Correct 276 ms 18660 KB Output is correct
37 Correct 271 ms 18876 KB Output is correct
38 Correct 264 ms 18764 KB Output is correct
39 Correct 264 ms 18028 KB Output is correct
40 Correct 264 ms 18768 KB Output is correct
41 Correct 264 ms 18840 KB Output is correct
42 Correct 260 ms 18024 KB Output is correct
43 Correct 265 ms 18000 KB Output is correct
44 Correct 268 ms 17964 KB Output is correct
45 Correct 263 ms 18000 KB Output is correct
46 Correct 262 ms 18004 KB Output is correct
47 Correct 293 ms 18004 KB Output is correct
48 Correct 266 ms 18880 KB Output is correct
49 Correct 279 ms 19004 KB Output is correct
50 Correct 273 ms 20892 KB Output is correct
51 Correct 275 ms 20816 KB Output is correct
52 Correct 272 ms 20772 KB Output is correct
53 Correct 288 ms 20800 KB Output is correct
54 Correct 304 ms 21052 KB Output is correct
55 Correct 279 ms 20728 KB Output is correct
56 Correct 299 ms 20716 KB Output is correct
57 Correct 268 ms 19792 KB Output is correct
58 Correct 268 ms 20916 KB Output is correct
59 Correct 272 ms 20716 KB Output is correct
60 Correct 266 ms 19924 KB Output is correct

Subtask #6
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6588 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 6488 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 440 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 0 ms 360 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6492 KB Output is correct
24 Correct 1 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 1 ms 6492 KB Output is correct
29 Correct 2 ms 6492 KB Output is correct
30 Correct 2 ms 6492 KB Output is correct
31 Correct 1 ms 344 KB Output is correct
32 Correct 1 ms 344 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 348 KB Output is correct
35 Correct 265 ms 17920 KB Output is correct
36 Correct 276 ms 18660 KB Output is correct
37 Correct 271 ms 18876 KB Output is correct
38 Correct 264 ms 18764 KB Output is correct
39 Correct 264 ms 18028 KB Output is correct
40 Correct 264 ms 18768 KB Output is correct
41 Correct 264 ms 18840 KB Output is correct
42 Correct 260 ms 18024 KB Output is correct
43 Correct 265 ms 18000 KB Output is correct
44 Correct 268 ms 17964 KB Output is correct
45 Correct 263 ms 18000 KB Output is correct
46 Correct 262 ms 18004 KB Output is correct
47 Correct 293 ms 18004 KB Output is correct
48 Correct 266 ms 18880 KB Output is correct
49 Correct 279 ms 19004 KB Output is correct
50 Correct 273 ms 20892 KB Output is correct
51 Correct 275 ms 20816 KB Output is correct
52 Correct 272 ms 20772 KB Output is correct
53 Correct 288 ms 20800 KB Output is correct
54 Correct 304 ms 21052 KB Output is correct
55 Correct 279 ms 20728 KB Output is correct
56 Correct 299 ms 20716 KB Output is correct
57 Correct 268 ms 19792 KB Output is correct
58 Correct 268 ms 20916 KB Output is correct
59 Correct 272 ms 20716 KB Output is correct
60 Correct 266 ms 19924 KB Output is correct
61 Correct 206 ms 12020 KB Output is correct
62 Correct 208 ms 12908 KB Output is correct
63 Correct 205 ms 12112 KB Output is correct
64 Correct 209 ms 12908 KB Output is correct
65 Correct 247 ms 17544 KB Output is correct
66 Correct 230 ms 17328 KB Output is correct
67 Correct 268 ms 20660 KB Output is correct
68 Correct 211 ms 12908 KB Output is correct
69 Correct 210 ms 12092 KB Output is correct
70 Correct 207 ms 12912 KB Output is correct
71 Correct 205 ms 11988 KB Output is correct