Compilare: user.c: In function ‘main’: user.c:26:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(!q[g[l][r]]) ^ user.c:6:12: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.in","r",stdin),freopen("ciclu.out","w",stdout),scanf("%d%d",&n,&m),w[0]=n; ^ user.c:6:42: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.in","r",stdin),freopen("ciclu.out","w",stdout),scanf("%d%d",&n,&m),w[0]=n; ^ user.c:6:72: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] freopen("ciclu.in","r",stdin),freopen("ciclu.out","w",stdout),scanf("%d%d",&n,&m),w[0]=n; ^ user.c:8:14: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lld",&a[i],&b[i],&c[i]),w[a[i]]++,c[i]*=100,k=(k<c[i]?c[i]:k); ^