Compilare: main.cpp: In function 'std::vector<int> radix(std::vector<int>)': main.cpp:13:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < V.size(); ++i ) ~~^~~~~~~~~~ main.cpp:19:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( j = 0; j < B[ i ].size(); ++j ) ~~^~~~~~~~~~~~~~~ main.cpp:9:9: warning: unused variable 'n' [-Wunused-variable] int n, i, j, k, mask, bac; ^ main.cpp:9:21: warning: unused variable 'mask' [-Wunused-variable] int n, i, j, k, mask, bac; ^~~~ main.cpp:9:27: warning: unused variable 'bac' [-Wunused-variable] int n, i, j, k, mask, bac; ^~~ main.cpp: In function 'int main()': main.cpp:46:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0; i < V.size(); ++i ) ~~^~~~~~~~~~ main.cpp:34:15: warning: unused variable 'j' [-Wunused-variable] int n, i, j, k, m, mask, bac = 1; ^ main.cpp:34:21: warning: unused variable 'm' [-Wunused-variable] int n, i, j, k, m, mask, bac = 1; ^ main.cpp:34:24: warning: unused variable 'mask' [-Wunused-variable] int n, i, j, k, m, mask, bac = 1; ^~~~ main.cpp:34:30: warning: unused variable 'bac' [-Wunused-variable] int n, i, j, k, m, mask, bac = 1; ^~~ main.cpp:31:40: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen( "algsort.in", "r", stdin ); ^ main.cpp:32:42: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen( "algsort.out", "w", stdout ); ^ main.cpp:38:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &n ); ^ main.cpp:40:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf( "%d", &k ); ^