Compilare: user.cpp: In function ‘int BFS(int)’: user.cpp:119:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[node].size();i++){ ^ user.cpp:140:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(depth[neighbour]==depth[node]&&match[node]==0&&match[neighbour]==0) ^ user.cpp:150:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<g[node].size();i++){ ^ user.cpp:152:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(dad[neighbour]==node) ^ user.cpp: In function ‘int main()’: user.cpp:162:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("jungla.in","r",stdin); ^ user.cpp:163:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("jungla.out","w",stdout); ^ user.cpp:165:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:167:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp: In function ‘void FindCycle3(int, int)’: user.cpp:55:80: warning: ‘index2’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,temp,node1,node2,current,current1=1,current2=1,bestDepth=-1,index1,index2; ^ user.cpp:84:5: warning: ‘index1’ may be used uninitialized in this function [-Wmaybe-uninitialized] for(i=0;i<=index1;i++) ^