Borderou de evaluare (job #622158)

Compilare: main.cpp: In function 'int main()': main.cpp:14:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 14 | freopen("acoperire.in","r",stdin); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result] 15 | freopen("acoperire.out","w",stdout); | ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:17:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 17 | scanf("%d%d",&a,&b); | ~~~~~^~~~~~~~~~~~~~ main.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 19 | scanf("%d",&n); | ~~~~~^~~~~~~~~ main.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result] 23 | scanf("%d%d",&v[i].first,&v[i].second); | ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~