Compilare: main.cpp: In function 'int cmp(interval, interval)': main.cpp:17:33: warning: suggest parentheses around '&&' within '||' [-Wparentheses] return (a.x<b.x || a.x==b.x && a.y<b.y || a.x==b.x && a.y==b.y && a.z<b.z); ~~~~~~~~~^~~~~~~~~~ main.cpp:17:68: warning: suggest parentheses around '&&' within '||' [-Wparentheses] return (a.x<b.x || a.x==b.x && a.y<b.y || a.x==b.x && a.y==b.y && a.z<b.z); ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~ main.cpp: In function 'void citire()': main.cpp:22:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &n); ^ main.cpp:25:61: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld %lld %lld\n", &a[i].x, &a[i].y, &a[i].z); ^ main.cpp: In function 'int main()': main.cpp:63:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("troll.in", "r", stdin); ^ main.cpp:64:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("troll.out", "w", stdout); ^