Compilare: main.cpp: In function 'int main()': main.cpp:18:26: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::size_t {aka long unsigned int}' [-Wformat=] printf("%d\n",sol.count());for (int i=1;i<=n;i++)if (sol[i])printf("%d ",i);printf("\n"); ^ main.cpp: In function 'char adv()': main.cpp:5:102: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] /** parsing **/ const int S=(1<<17);char buf[S];int ptr=S;char adv(){if (ptr==S){fread(buf,1,S,stdin);ptr=0;}return buf[ptr++];} int read(){char c=adv();while (c<'0' || '9'<c)c=adv();int r=0;while ('0'<=c && c<='9'){r=10*r+c-'0';c=adv();}return r;} ^ main.cpp: In function 'int main()': main.cpp:13:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("freakadebunic.in","r",stdin);freopen ("freakadebunic.out","w",stdout); ^ main.cpp:13:80: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen ("freakadebunic.in","r",stdin);freopen ("freakadebunic.out","w",stdout); ^