src.cpp: In function 'long long int snt(long long int)':
src.cpp:9:19: error: 'sqrt' was not declared in this scope
while(k<sqrt(x)){
^
src.cpp: In function 'int main()':
src.cpp:16:5: error: 'ios_base' has not been declared
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
^
src.cpp:16:34: error: 'cin' was not declared in this scope
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
^
src.cpp:16:45: error: 'cout' was not declared in this scope
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
^
src.cpp:17:27: error: 'stdin' was not declared in this scope
freopen("SNT.INP","r",stdin);
^
src.cpp:17:32: error: 'freopen' was not declared in this scope
freopen("SNT.INP","r",stdin);
^
src.cpp:18:27: error: 'stdout' was not declared in this scope
freopen("SNT.OUT","w",stdout);
^
src.cpp:25:22: error: 'endl' was not declared in this scope
cout<<t<<endl;
^