View Compilation Error

0_0_14580516_29503.cpp: In function 'int main()':
0_0_14580516_29503.cpp:112:13: error: 'else' without a previous 'if'
             else if(s[i] == '?')
             ^
0_0_14580516_29503.cpp:127:16: error: 'R' was not declared in this scope
             if(R == 0)
                ^
0_0_14580516_29503.cpp:145:24: error: 't' was not declared in this scope
         printf("%d\n",(t - num_bad + mod) % mod);
                        ^