View Compilation Error

0_0_21497871_4441.cpp: In function 'int main()':
0_0_21497871_4441.cpp:30:13: error: 'in' was not declared in this scope
             in cnt0=1,cnt1=0;
             ^
0_0_21497871_4441.cpp:33:30: error: 'cnt0' was not declared in this scope
                     dp[j][0]=cnt0;
                              ^
0_0_21497871_4441.cpp:34:30: error: 'cnt1' was not declared in this scope
                     dp[j][1]=cnt1;
                              ^
0_0_21497871_4441.cpp:41:21: error: 'cnt0' was not declared in this scope
                     cnt0=(cnt0+sum[j][1])%mod;
                     ^
0_0_21497871_4441.cpp:43:21: error: 'cnt1' was not declared in this scope
                     cnt1=(cnt1+sum[j][0])%mod;
                     ^