View Compilation Error

0_0_23197957_30973.cpp: In function 'int main()':
0_0_23197957_30973.cpp:39:47: error: expected primary-expression before ',' token
                     dp[i][k]=max(dp[i][k],max(,dp[i-1][k-cost[t]]+value[t],dp[i][k-cost[t]]+value[t]));
                                               ^