Compilare: user.cpp: In function ‘void Dfs(int, int)’: user.cpp:27:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘void Dfs_lin(int, int)’: user.cpp:60:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<g[nod].size();i++) ^ user.cpp: In function ‘void DFS(int, int)’: user.cpp:129:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<g[nod].size() && !cnt;i++) cnt += (g[nod][i] != p); ^ user.cpp:134:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<pz[nod].size();i++) Min=min(Min,pz[nod][i].cost); ^ user.cpp:140:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<g[nod].size();i++) if (g[nod][i]!=p) DFS(g[nod][i], nod); ^ user.cpp:141:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<g[nod].size();i++) if (g[nod][i]!=p) sum[nod] += dp[g[nod][i]]; ^ user.cpp:144:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<pz[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:162:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paznici3.in","r",stdin); ^ user.cpp:163:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("paznici3.out","w",stdout); ^