View Compilation Error

0_0_30247581_29788.cpp: In function 'int main()':
0_0_30247581_29788.cpp:101:10: error: incompatible types in assignment of 'int' to 'long long int [500005]'
     for(x=io.xint();_;--_)
          ^
0_0_30247581_29788.cpp:106:30: error: 'i' was not declared in this scope
             r[i]=io.xint();s[i]=io.xint();x[i]=io.xint();t[i]=io.xint();
                              ^
0_0_30247581_29788.cpp:106:58: error: 't' was not declared in this scope
             r[i]=io.xint();s[i]=io.xint();x[i]=io.xint();t[i]=io.xint();
                                                          ^