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답안 #972109

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
972109 2024-04-30T05:45:59 Z sleepntsheep Rack (eJOI19_rack) C
100 / 100
 29 ms 34728 KB 
#include <stdio.h>

#define MOD 1000000007ll
#define N 1000005
int p2[N];
long long n, k;

long long a(long long k,long long l,long long r,int d)
{
    if(d==n)return 1;
    if(k&1) return a((k+1)/2, l, r-1, d+1) % MOD;
    else return (a(k/2, l+1, r, d+1) + p2[n-1-d]) % MOD;
}

int main()
{
    p2[0]=1;for(int i=1;i<N;++i)p2[i]=(p2[i-1]<<1)%MOD;
    scanf("%lld%lld",&n,&k);
    printf("%lld",a(k,0,n,0));
}

Compilation message

rack.c: In function 'main':
rack.c:18:5: warning: ignoring return value of 'scanf' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |     scanf("%lld%lld",&n,&k);
      |     ^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4188 KB Output is correct
2 Correct 5 ms 4120 KB Output is correct
3 Correct 5 ms 4188 KB Output is correct
4 Correct 5 ms 4124 KB Output is correct
5 Correct 5 ms 4184 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4188 KB Output is correct
2 Correct 5 ms 4120 KB Output is correct
3 Correct 5 ms 4188 KB Output is correct
4 Correct 5 ms 4124 KB Output is correct
5 Correct 5 ms 4184 KB Output is correct
6 Correct 5 ms 4188 KB Output is correct
7 Correct 5 ms 4188 KB Output is correct
8 Correct 5 ms 4380 KB Output is correct
9 Correct 5 ms 4188 KB Output is correct
10 Correct 5 ms 4188 KB Output is correct

Subtask #3
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 4188 KB Output is correct
2 Correct 5 ms 4120 KB Output is correct
3 Correct 5 ms 4188 KB Output is correct
4 Correct 5 ms 4124 KB Output is correct
5 Correct 5 ms 4184 KB Output is correct
6 Correct 5 ms 4188 KB Output is correct
7 Correct 5 ms 4188 KB Output is correct
8 Correct 5 ms 4380 KB Output is correct
9 Correct 5 ms 4188 KB Output is correct
10 Correct 5 ms 4188 KB Output is correct
11 Correct 5 ms 4184 KB Output is correct
12 Correct 6 ms 4340 KB Output is correct
13 Correct 5 ms 4444 KB Output is correct
14 Correct 6 ms 5916 KB Output is correct
15 Correct 29 ms 34728 KB Output is correct