Compilare: user.cpp: In function ‘int main()’: user.cpp:74:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<g[t.node].size(); i++) ^ user.cpp:93:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<g[t.node].size(); i++) ^ user.cpp:111:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0; i<g[t.node].size(); i++) ^ user.cpp:138:31: warning: left operand of comma operator has no effect [-Wunused-value] for(j=dadB[v[i].rt]; j!=0, ok==true; j=dadB[j]) ^ user.cpp:143:31: warning: left operand of comma operator has no effect [-Wunused-value] for(j=dadC[v[i].rt]; j!=0, ok==true; j=dadC[j]) ^ user.cpp:53:29: warning: unused variable ‘rt’ [-Wunused-variable] int n,m,i,j,x,y,c,A,B,C,rt,k=0; ^ user.cpp:54:15: warning: unused variable ‘mini’ [-Wunused-variable] long long mini=inf; ^ user.cpp:51:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trilant.in","r",stdin); ^ user.cpp:52:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("trilant.out","w",stdout); ^ user.cpp:57:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:58:29: 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:61:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&x,&y,&c); ^