Compilare: main.cpp: In function 'void dfsAquire(int, int)': main.cpp:40:7: warning: unused variable 'canVisit' [-Wunused-variable] bool canVisit = false; ^~~~~~~~ main.cpp: In function 'void dfsSpread(int, int)': main.cpp:53:7: warning: unused variable 'canVisit' [-Wunused-variable] bool canVisit = false; ^~~~~~~~ main.cpp: In function 'int main()': main.cpp:88:41: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<std::pair<int, int> >::size_type {aka long unsigned int}' [-Wformat=] printf("%d\n", sol.size() + sol2.size()); ^ main.cpp:66:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mesaj4.in", "r", stdin); ^ main.cpp:67:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("mesaj4.out", "w", stdout); ^ main.cpp:69:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ main.cpp:73:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &x, &y); ^