View Compilation Error

0_0_33545945_9220.cpp: In function 'int main()':
0_0_33545945_9220.cpp:50:18: error: no match for 'operator[]' (operand types are 'std::vector<ss> [55]' and 'ss')
             if(vt[e[i]].t.size()==1)
                  ^