Compilare: main.c: In function 'D': main.c:9:9: warning: unused variable 'i' [-Wunused-variable] int i,g; ^ main.c: In function 'main': main.c:22:5: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.in","r",stdin),freopen("sudest.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:22:36: warning: ignoring return value of 'freopen', declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.in","r",stdin),freopen("sudest.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:22:69: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.in","r",stdin),freopen("sudest.out","w",stdout),scanf("%d",&n); ^~~~~~~~~~~~~~ main.c:25:13: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]),c[i][j]=-1,p[i][j]=255; ^~~~~~~~~~~~~~~~~~~~ main.c:26:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^~~~~~~~~~~~~~ main.c:28:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&m[d]); ^~~~~~~~~~~~~~~~~