Compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:82:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<dp[i].size();j++) ^ user.cpp: In function ‘void read()’: user.cpp:21:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:23:46: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&a[i].x,&a[i].y,&a[i].c); ^ user.cpp: In function ‘int main()’: user.cpp:98:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("viteza2.in","r",stdin); ^ user.cpp:99:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("viteza2.out","w",stdout); ^ user.cpp: In function ‘void bfs(int)’: user.cpp:45:19: warning: ‘cnt’ may be used uninitialized in this function [-Wmaybe-uninitialized] int k,Min,val,cnt; ^