View Compilation Error

0_0_30590665_9243.cpp: In function 'int main()':
0_0_30590665_9243.cpp:18:21: error: typedef 'tot' is initialized (use decltype instead)
   typedef long long tot=0;
                     ^
0_0_30590665_9243.cpp:23:4: error: 'tot' was not declared in this scope
    tot+=l[i];
    ^