View Compilation Error

0_0_33184656_22958.cpp: In function 'int query(int, int, int, int, int)':
0_0_33184656_22958.cpp:67:31: error: 'inf' was not declared in this scope
     if(sum[e]==sum[s]) return inf;
                               ^
0_0_33184656_22958.cpp:69:26: error: 'inf' was not declared in this scope
     int mid=(l+r)>>1,ans=inf;
                          ^