View Compilation Error

0_0_24537013_2413.cpp: In function 'int main()':
0_0_24537013_2413.cpp:21:27: error: 'j' was not declared in this scope
                 if(!dp[i][j])continue;
                           ^
0_0_24537013_2413.cpp:22:28: error: 'j' was not declared in this scope
                 if(c[i]==a[j])dp[i+1][j+1]=1;
                            ^
0_0_24537013_2413.cpp:23:30: error: 'j' was not declared in this scope
                 if(c[i]==b[i-j])dp[i+1][j]=1;
                              ^