Compilare: main.cpp: In function 'int main()': main.cpp:79:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("copaci2.in", "r", stdin); ^ main.cpp:80:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("copaci2.out", "w", stdout); ^ main.cpp:82:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &k); ^ main.cpp:84:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &v[i].h, &v[i].c); ^ main.cpp: In function 'int cmin(int)': main.cpp:59:10: warning: 'ne' may be used uninitialized in this function [-Wmaybe-uninitialized] return ne; ^~