Submission #1075080


Source Code Expand

#include <bits/stdc++.h>

using namespace std;

const int md = 1000000007;

inline void add(int &a, int b) {
  a += b;
  if (a >= md) {
    a -= md;
  }
}

const int N = 4444;

int f[N][N];

int main() {
  int n, m, k;
  scanf("%d %d %d", &n, &m, &k);
  int max_p = (n + m - 1) / (k - 1);
  f[0][0] = 1;
  for (int i = 0; i < max_p; i++) {
    for (int j = 0; j <= n; j++) {
      for (int t = 0; j + t <= n && t < k; t++) {
        add(f[i + 1][j + t], f[i][j]);
      }
    }
  }
  int ans = 0;
  for (int cnt = 0; cnt < max_p; cnt++) {
    for (int j = 0; j <= n; j++) {
      int ways = f[cnt][j];
      int total = cnt * (k - 1);
      int t = total - j;
      if (j < n && t < m) {
        add(ans, ways);
      }
    }
  }
  printf("%d\n", ans);
  return 0;
}

Submission Info

Submission Time
Task E - Eternal Average
User tourist
Language C++14 (GCC 5.4.1)
Score 1600
Code Size 810 Byte
Status AC
Exec Time 154 ms
Memory 47488 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:20:32: 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 3 ms 256 KB
02.txt AC 154 ms 47488 KB
03.txt AC 3 ms 256 KB
04.txt AC 3 ms 256 KB
05.txt AC 90 ms 23808 KB
06.txt AC 8 ms 2944 KB
07.txt AC 29 ms 6144 KB
08.txt AC 4 ms 512 KB
09.txt AC 35 ms 1792 KB
10.txt AC 33 ms 1280 KB
11.txt AC 10 ms 256 KB
12.txt AC 8 ms 256 KB
13.txt AC 24 ms 640 KB
14.txt AC 13 ms 384 KB
15.txt AC 22 ms 640 KB
16.txt AC 4 ms 256 KB
17.txt AC 12 ms 256 KB
18.txt AC 8 ms 640 KB
19.txt AC 79 ms 25088 KB
20.txt AC 44 ms 7040 KB
21.txt AC 3 ms 256 KB
22.txt AC 49 ms 6144 KB
23.txt AC 26 ms 1024 KB
24.txt AC 23 ms 896 KB
s1.txt AC 3 ms 256 KB
s2.txt AC 3 ms 256 KB
s3.txt AC 3 ms 384 KB