Compilare: user.cpp: In function ‘int main()’: user.cpp:57:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (t < a[i].size() && bp[a[i][t]] != 0) t++; ^ user.cpp:58:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (t < a[i].size()) { ^ user.cpp: In function ‘bool cuplare(int)’: user.cpp:93:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int ii = 0; ii < a[v].size(); ii++) ^ user.cpp:99:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int ii = 0; ii < a[v].size(); ii++) ^ user.cpp: In function ‘int main()’: user.cpp:41:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaj.in", "r", stdin); ^ user.cpp:42:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaj.out", "w", stdout); ^ user.cpp:44:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &la, &lb, &m); ^ user.cpp:46:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^