Compilare: main.cpp: In function 'int main()': main.cpp:76:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cycle.size() != m + 1) ~~~~~~~~~~~~~^~~~~~~~ main.cpp:84:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < cycle.size() - 1; i++) { ~~^~~~~~~~~~~~~~~~~~ main.cpp:38:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fotbal2.in", "r", stdin); ^ main.cpp:39:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("fotbal2.out", "w", stdout); ^ main.cpp:42:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:48:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &u, &v); ^