Compilare: user.cpp: In function ‘void solve()’: user.cpp:25:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<G[i].size()&ol;j++) ^ user.cpp:25:22: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] for(j=0;j<G[i].size()&ol;j++) ^ user.cpp:29:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(jj = 0; jj < G[i].size();jj++){ s=0; ^ user.cpp:12:28: warning: unused variable ‘nr’ [-Wunused-variable] int i,j,ok=1,ol,jj,q,s,p,nr; ^ user.cpp: In function ‘int main()’: user.cpp:47:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(iN); ^ user.cpp:48:17: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen(ouT); ^ user.cpp:49:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:51:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x,&y); ^ user.cpp:46:20: warning: ‘rila’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,x,y,s,ok,rila; ^