Compilare: user.cpp: In function ‘bool fit(int, int)’: user.cpp:23:40: warning: unused variable ‘yc’ [-Wunused-variable] int xc = a[j].xa + a[j].r, yc = a[j].ya; ^ user.cpp:24:17: warning: unused variable ‘xd’ [-Wunused-variable] int xd = a[j].xa, yd = a[j].ya - a[j].r; ^ user.cpp:39:41: warning: unused variable ‘ya2’ [-Wunused-variable] int xa2 = a[i].xa - a[i].r, ya2 = a[i].ya; ^ user.cpp:40:17: warning: unused variable ‘xb2’ [-Wunused-variable] int xb2 = a[i].xa, yb2 = a[i].ya + a[i].r; ^ user.cpp:41:41: warning: unused variable ‘yc2’ [-Wunused-variable] int xc2 = a[i].xa + a[i].r, yc2 = a[i].ya; ^ user.cpp:42:17: warning: unused variable ‘xd2’ [-Wunused-variable] int xd2 = a[i].xa, yd2 = a[i].ya - a[i].r; ^ user.cpp:30:36: warning: unused variable ‘ya’ [-Wunused-variable] int xa = a[i].xa - a[i].r, ya = a[i].ya; ^ user.cpp:31:13: warning: unused variable ‘xb’ [-Wunused-variable] int xb = a[i].xa, yb = a[i].ya + a[i].r; ^ user.cpp:32:36: warning: unused variable ‘yc’ [-Wunused-variable] int xc = a[i].xa + a[i].r, yc = a[i].ya; ^ user.cpp:33:13: warning: unused variable ‘xd’ [-Wunused-variable] int xd = a[i].xa, yd = a[i].ya - a[i].r; ^ user.cpp: In function ‘int main()’: user.cpp:50:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuiburi.in", "r", stdin); ^ user.cpp:51:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuiburi.out", "w", stdout); ^ user.cpp:52:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:54:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &a[i].t); ^ user.cpp:55:82: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] if(a[i].t == 0) scanf("%d%d%d%d", &a[i].xa, &a[i].ya, &a[i].xb, &a[i].yb); ^ user.cpp:56:58: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] else scanf("%d%d%d", &a[i].xa, &a[i].ya, &a[i].r); ^