Compilare: main.cpp: In function 'bool dijkstra()': main.cpp:30:13: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(dist[it]>dist[nod]+cst[nod][it]+pred[nod]-pred[it]); ^~ main.cpp:31:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' { ^ main.cpp:46:9: warning: unused variable 'flow' [-Wunused-variable] int flow=2e9,f,ans; ^~~~ main.cpp: In function 'int main()': main.cpp:67:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("traseu.in","r",stdin); ^ main.cpp:68:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("traseu.out","w",stdout); ^ main.cpp:71:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:81:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&z); ^ main.cpp:53:14: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized] sol=sol+f*rd[n+1]; ~^~~~~~~~ main.cpp:46:18: note: 'f' was declared here int flow=2e9,f,ans; ^