Compilare: main.cpp: In function 'void dfs(int)': main.cpp:34:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<g[nod].size(); i++) ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:84:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0,k=0; j<pozitii[i].size() && k<que[i].size(); j++) ~^~~~~~~~~~~~~~~~~~ main.cpp:84:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0,k=0; j<pozitii[i].size() && k<que[i].size(); j++) ~^~~~~~~~~~~~~~ main.cpp:91:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<que[i].size(); j++) ~^~~~~~~~~~~~~~ main.cpp:108:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<ans[i].size(); j++){ ~^~~~~~~~~~~~~~ main.cpp:58:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] { freopen("sushi2.in", "r", stdin); ^ main.cpp:59:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("sushi2.out", "w", stdout); ^ main.cpp:61:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ main.cpp:63:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &k); ^ main.cpp:65:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ main.cpp:70:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &x, &y, &t); ^