View Compilation Error

0_0_37882563_13446.cpp: In function 'void solve()':
0_0_37882563_13446.cpp:17:12: error: missing template arguments before 'dp'
     vector dp(n + 1, vector<int> (k + 1));
            ^
0_0_37882563_13446.cpp:18:5: error: 'dp' was not declared in this scope
     dp[0][0] = 1;
     ^