Compilare: main.cpp: In function 'int main()': main.cpp:40:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("inel.in","r",stdin); ^ main.cpp:41:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("inel.out","w",stdout); ^ main.cpp:42:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ main.cpp:51:9: warning: array subscript is above array bounds [-Warray-bounds] b[29]=1; ~~~~^ main.cpp:52:9: warning: array subscript is above array bounds [-Warray-bounds] b[31]=1; ~~~~^ main.cpp:53:9: warning: array subscript is above array bounds [-Warray-bounds] b[37]=1; ~~~~^