Compilare: main.cpp: In function 'int main()': main.cpp:105:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();++j) ~^~~~~~~~~~~~ main.cpp:147:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<(v[i].size())-1;++j) ~^~~~~~~~~~~~~~~~ main.cpp:159:38: warning: suggest parentheses around '+' inside '<<' [-Wparentheses] y=v[i][j].x+(1<<i+1)-1; ~^~ main.cpp:86:21: warning: unused variable 'mn' [-Wunused-variable] long long n,i,j,mn,t; ^~ main.cpp: In function 'char read_ch()': main.cpp:47:33: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(_in_buff, 1, 4096, _fin); ^