Compilare: user.cpp: In function ‘int get(int&)’: user.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp:28:69: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIMBUF, stdin), p = 0, len = strlen(buff); ^ user.cpp:36:70: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIMBUF, stdin), p = 0 , len = strlen(buff); ^ user.cpp: In function ‘int main()’: user.cpp:214:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("smax.in", "r", stdin); ^ user.cpp:215:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("smax.out", "w", stdout); ^ user.cpp:216:31: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buff, 1, DIMBUF, stdin); ^ user.cpp: In function ‘void constructRmq()’: user.cpp:148:26: warning: ‘v2[1]’ may be used uninitialized in this function [-Wmaybe-uninitialized] a[i][j][l][1] = v2[1]; ^ user.cpp: In function ‘void solve()’: user.cpp:42:32: warning: ‘v2[1]’ may be used uninitialized in this function [-Wmaybe-uninitialized] pp getPos(int nr) { return {nr / NMAX, nr % NMAX}; } ^ user.cpp:164:29: note: ‘v2[1]’ was declared here int v[8]; int cnt = 0; int v2[8]; int cnt2 = 0; ^