View Compilation Error

0_0_25578959_9768.cpp: In function 'int main()':
0_0_25578959_9768.cpp:78:8: error: 'i' was not declared in this scope
    for(i=1;i<=n;i++)
        ^
0_0_25578959_9768.cpp:81:11: error: 'i' was not declared in this scope
       for(i=1;i<all;i++)
           ^
0_0_25578959_9768.cpp:81:17: error: 'all' was not declared in this scope
       for(i=1;i<all;i++)
                 ^
0_0_25578959_9768.cpp:82:20: error: 'f' was not declared in this scope
    add(ans[cnt[i]],f[i]);
                    ^
0_0_25578959_9768.cpp:84:11: error: 'i' was not declared in this scope
       for(i=2;i<=n;i+=2)
           ^
0_0_25578959_9768.cpp: At global scope:
0_0_25578959_9768.cpp:89:1: error: expected declaration before '}' token
 } 
 ^