View Compilation Error

0_0_22519884_27764.cpp: In function 'int main()':
0_0_22519884_27764.cpp:45:9: error: 'REPans' was not declared in this scope
         REPans += dp[i][len];
         ^
0_0_22519884_27764.cpp:45:22: error: 'i' was not declared in this scope
         REPans += dp[i][len];
                      ^