Compilare: user.cpp:9:17: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] unsigned int v[1<<20+5]; ^ user.cpp: In function ‘int main()’: user.cpp:131:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i1<=i && d1>=l) ^ user.cpp:131:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i1<=i && d1>=l) ^ user.cpp:136:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i2<i && d2>u) ^ user.cpp:136:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i2<i && d2>u) ^ user.cpp:141:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d2>=l) sol=sol+(i1-i2); ^ user.cpp: In function ‘void citeste(unsigned int&)’: user.cpp:19:36: 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,dim,stdin); ^ user.cpp:29:36: 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,dim,stdin); ^ user.cpp: In function ‘int main()’: user.cpp:119:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.in","r",stdin); ^ user.cpp:120:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("secv5.out","w",stdout); ^ user.cpp:121:28: 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,dim,stdin); ^