Submission #1773367
Source Code Expand
#include <cstdio>
#include <algorithm>
using namespace std;
#define iter(i, n) for (int i = 1; i <= n; ++i)
#define forw(i, a, b) for (int i = a; i <= b; ++i)
const int mod = 1e9 + 7;
const int NR = 2010;
int n, m, K;
int f[NR][NR];
int main() {
scanf("%d%d%d", &n, &m, &K);
int N = max(n, m) + 2, ans = 0;
f[0][0] = 1; iter(i, n) f[0][i] = 1;
iter(i, N) {
forw(j, 0, n) {
f[i][j] = (f[i - 1][j] - (j - K < 0 ? 0 : f[i - 1][j - K]) + mod) % mod;
if (j) f[i][j] = (f[i][j] + f[i][j - 1]) % mod;
int t = i * (K - 1) - j;
if (j > 0 && j % (K - 1) == n % (K - 1) && t <= m - 1 && t % (K - 1) == (m - 1) % (K - 1)) {
ans = (0ll + ans + f[i - 1][j - 1] - (j - K < 0 ? 0 : f[i - 1][j - K]) + mod) % mod;
// printf("!%d %d\n", i, j);
}
// printf("f[%d][%d]=%d\n", i, j, f[i][j]);
}
}
printf("%d\n", ans);
return 0;
}
Submission Info
Submission Time
2017-11-14 22:59:35+0900
Task
E - Eternal Average
User
Ketsui
Language
C++14 (GCC 5.4.1)
Score
0
Code Size
884 Byte
Status
WA
Exec Time
69 ms
Memory
15872 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:15:29: 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
0 / 1600
Status
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
WA
1 ms
256 KB
02.txt
WA
69 ms
15872 KB
03.txt
AC
1 ms
128 KB
04.txt
AC
1 ms
128 KB
05.txt
AC
58 ms
15872 KB
06.txt
AC
5 ms
14208 KB
07.txt
AC
54 ms
15872 KB
08.txt
AC
3 ms
5376 KB
09.txt
AC
43 ms
15872 KB
10.txt
AC
43 ms
15872 KB
11.txt
AC
42 ms
15872 KB
12.txt
AC
42 ms
15872 KB
13.txt
AC
37 ms
15616 KB
14.txt
AC
26 ms
12416 KB
15.txt
AC
35 ms
15744 KB
16.txt
AC
22 ms
12416 KB
17.txt
AC
38 ms
15232 KB
18.txt
AC
14 ms
14848 KB
19.txt
WA
57 ms
15872 KB
20.txt
AC
44 ms
15104 KB
21.txt
AC
1 ms
256 KB
22.txt
AC
48 ms
15872 KB
23.txt
AC
34 ms
14464 KB
24.txt
AC
32 ms
14464 KB
s1.txt
AC
1 ms
128 KB
s2.txt
AC
1 ms
128 KB
s3.txt
AC
1 ms
896 KB