Submission #1753091


Source Code Expand

#include <cstdio>
#include <algorithm>
#define repu(i,x,y) for (int i=x; i<=y; ++i)
using namespace std;

const int p=1000000007;
int n,m,k,f[4010][2010],ans;

int main()
{
    scanf("%d%d%d",&n,&m,&k);
    f[1][1]=1,f[1][k]=p-1;
    repu(i,1,(n+m-1)/(k-1))
        repu(j,1,m)
            if ((f[i][j]+=f[i][j-1])%=p)
            {
                (f[i+1][j]+=f[i][j])%=p;
                (f[i+1][min(m+1,j+k)]+=p-f[i][j])%=p;
                if ((m-j)%(k-1)==0 && (k-1)*i-j<n && (n-1-(k-1)*i+j)%(k-1)==0)
                    (ans+=f[i][j])%=p;
            }
    printf("%d\n",ans);
    return 0;
}

Submission Info

Submission Time
Task E - Eternal Average
User dwjshift
Language C++14 (GCC 5.4.1)
Score 1600
Code Size 622 Byte
Status AC
Exec Time 82 ms
Memory 31616 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d",&n,&m,&k);
                             ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 1600 / 1600
Status
AC × 3
AC × 27
Set Name Test Cases
Sample s1.txt, s2.txt, s3.txt
All 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, s1.txt, s2.txt, s3.txt
Case Name Status Exec Time Memory
01.txt AC 1 ms 256 KB
02.txt AC 82 ms 31616 KB
03.txt AC 1 ms 128 KB
04.txt AC 1 ms 128 KB
05.txt AC 38 ms 16512 KB
06.txt AC 12 ms 6272 KB
07.txt AC 2 ms 3200 KB
08.txt AC 1 ms 640 KB
09.txt AC 3 ms 1152 KB
10.txt AC 2 ms 896 KB
11.txt AC 1 ms 256 KB
12.txt AC 1 ms 128 KB
13.txt AC 1 ms 512 KB
14.txt AC 1 ms 256 KB
15.txt AC 1 ms 512 KB
16.txt AC 1 ms 128 KB
17.txt AC 1 ms 256 KB
18.txt AC 2 ms 768 KB
19.txt AC 7 ms 17664 KB
20.txt AC 10 ms 6272 KB
21.txt AC 1 ms 128 KB
22.txt AC 10 ms 4224 KB
23.txt AC 2 ms 768 KB
24.txt AC 2 ms 640 KB
s1.txt AC 1 ms 128 KB
s2.txt AC 1 ms 128 KB
s3.txt AC 1 ms 256 KB