permutare.cpp:1:26: bits/stdc++.h: No such file or directory permutare.cpp: In function `int main()': permutare.cpp:8: `cin' undeclared (first use this function) permutare.cpp:8: (Each undeclared identifier is reported only once for each function it appears in.) permutare.cpp:10: `sort' undeclared (first use this function) permutare.cpp:11: `cout' undeclared (first use this function)