Compilare: user.cpp: In function ‘void Sort()’: user.cpp:33:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < s[0][i].size(); j++) { ^ user.cpp:43:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < s[1][i].size(); j++) { ^ user.cpp: In function ‘int main()’: user.cpp:51:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("triaj.in", "r", stdin); ^ user.cpp:52:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("triaj.out", "w", stdout); ^ user.cpp:53:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:55:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x[i]); ^