Compilare: user.cpp: In function ‘void solve(int)’: user.cpp:66:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (t.ind < succ[t.od].size()-1) ^ user.cpp: In function ‘void afisare()’: user.cpp:73:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (succ[1].size() != k) ^ user.cpp: In function ‘void read()’: user.cpp:19:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &n, &m, &k); ^ user.cpp:22:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d", &x, &y, &z); ^ user.cpp: In function ‘int main()’: user.cpp:82:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pitici.in", "r", stdin); ^ user.cpp:83:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("pitici.out", "w", stdout); ^