Compilare: main.cpp: In function 'void dfs()': main.cpp:95:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v[y].size(); i++) ~~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:108:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cartite.in", "r", stdin); ^ main.cpp:109:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cartite.out", "w", stdout); ^ main.cpp:112:65: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%d %d\n%d %d\n%d ", &cerinta, &m, &n, &xc, &yc, &k); ^ main.cpp:115:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d ", &lin, &col, &r); ^ main.cpp:119:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &g); ^ main.cpp:122:52: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d ", &lin, &col, &lin2, &col2); ^