diff options
Diffstat (limited to 'tests/sysy_lvX/080_color.sy')
| -rw-r--r-- | tests/sysy_lvX/080_color.sy | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/tests/sysy_lvX/080_color.sy b/tests/sysy_lvX/080_color.sy new file mode 100644 index 0000000..a18319e --- /dev/null +++ b/tests/sysy_lvX/080_color.sy @@ -0,0 +1,69 @@ +const int maxn = 18; +const int mod = 1000000007; +int dp[maxn][maxn][maxn][maxn][maxn][7]; +int list[200]; + +int equal(int a, int b) { + if (a == b) + return 1; + return 0; +} + +int dfs(int a, int b, int c, int d, int e, int last){ + if(dp[a][b][c][d][e][last] != -1) + return dp[a][b][c][d][e][last]; + if(a + b + c + d + e == 0) + return 1; + int ans = 0; + if (a) ans = (ans + (a - equal(last, 2)) * dfs(a - 1, b, c, d, e, 1)) % mod; + if (b) ans = (ans + (b - equal(last, 3)) * dfs(a + 1, b - 1, c, d, e, 2)) % mod; + if (c) ans = (ans + (c - equal(last, 4)) * dfs(a, b + 1, c - 1, d, e, 3)) % mod; + if (d) ans = (ans + (d - equal(last, 5)) * dfs(a, b, c + 1, d - 1, e, 4)) % mod; + if (e) ans = (ans + e * dfs(a, b, c, d + 1, e - 1, 5)) % mod; + dp[a][b][c][d][e][last] = ans % mod; + return dp[a][b][c][d][e][last]; +} + +int cns[20]; + +int main(){ + int n = getint(); + int i = 0; + while (i < maxn) { + int j = 0; + while(j < maxn) { + int k = 0; + while(k < maxn) { + int l = 0; + while (l < maxn) { + int m = 0; + while (m < maxn) { + int h = 0; + while (h < 7) { + dp[i][j][k][l][m][h] = -1; + h = h + 1; + } + m = m + 1; + } + l = l + 1; + } + k = k + 1; + } + j = j + 1; + } + i = i + 1; + } + + i = 0; + while (i < n) { + list[i] = getint(); + cns[list[i]] = cns[list[i]] + 1; + i = i + 1; + } + + int ans = dfs(cns[1], cns[2], cns[3], cns[4], cns[5], 0); + + putint(ans); + + return ans; +}
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