Compilare: user.cpp: In function ‘void dijkstra()’: user.cpp:64:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[t].size();i++) ^ user.cpp:65:54: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(nrk[v[t][i].x]<nrk[t]+nodk[v[t][i].x] && nrk[t]<=k || (nrk[v[t][i].x]==nrk[t] && dmin[v[t][i].x]>dmin[t]+v[t][i].c)) ^ user.cpp: In function ‘void citire()’: user.cpp:37:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ubuntzei.in","r",stdin); ^ user.cpp:38:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n%d",&n,&m,&k); ^ user.cpp:42:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf(" %d",&a); ^ user.cpp:48:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&a,&b,&c); ^ user.cpp: In function ‘void dijkstra()’: user.cpp:72:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ubuntzei.out","w",stdout); ^