View Compilation Error

0_0_31681323_26846.cpp: In function 'int main()':
0_0_31681323_26846.cpp:23:7: error: redeclaration of 'int len1'
   int len1=strlen(str2);
       ^
0_0_31681323_26846.cpp:22:7: note: 'int len1' previously declared here
   int len1=strlen(str1);
       ^
0_0_31681323_26846.cpp:26:17: error: 'len2' was not declared in this scope
   for(int i=0;i<len2;i++)
                 ^
0_0_31681323_26846.cpp:34:7: error: 'print' was not declared in this scope
       print f("c:%d\n",i+97,dp[k][i]);
       ^
0_0_31681323_26846.cpp:36:2: error: expected ';' before '}' token
  }
  ^