View Compilation Error

0_0_22138813_5794.cpp: In function 'int main()':
0_0_22138813_5794.cpp:102:1: error: 's' was not declared in this scope
 s[i] = buf;
 ^
0_0_22138813_5794.cpp:108:16: error: 's' was not declared in this scope
             if(s[i].size() == maxx && s[i] != s[id])
                ^
0_0_22138813_5794.cpp:108:31: error: 'maxx' was not declared in this scope
             if(s[i].size() == maxx && s[i] != s[id])
                               ^