View Compilation Error

0_0_15857776_1990.cpp: In function 'int main()':
0_0_15857776_1990.cpp:7:9: error: lvalue required as decrement operand
  while(t--){
         ^
0_0_15857776_1990.cpp:10:18: error: lvalue required as left operand of assignment
    if(-1==j||t[i]=t[j]) next[++i]==++j;
                  ^