View Compilation Error

0_0_33751721_9076.cpp:1:13: error: 'i' was not declared in this scope
    int m = (i+1)%n, len;
             ^
0_0_33751721_9076.cpp:1:18: error: 'n' was not declared in this scope
    int m = (i+1)%n, len;
                  ^
0_0_33751721_9076.cpp:2:4: error: expected unqualified-id before 'if'
    if(time[m].s < time[i].e)
    ^
0_0_33751721_9076.cpp:4:4: error: expected unqualified-id before 'else'
    else
    ^
0_0_33751721_9076.cpp:6:4: error: expected unqualified-id before 'if'
    if(len > a * 60){
    ^
0_0_33751721_9076.cpp:10:3: error: expected declaration before '}' token
   }
   ^