Compilare: main.cpp: In function 'int main()': main.cpp:19:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v.size();i++) { ~^~~~~~~~~ main.cpp:22:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (k=i;k<v.size();k++) { ~^~~~~~~~~ main.cpp:18:21: warning: variable 'kk' set but not used [-Wunused-but-set-variable] int64_t k,sum,a,kk,aa=0,ce,da; ^~ main.cpp:36:34: warning: 'da' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<aa<<" "<<ce+1<<" "<<da+1; ^ main.cpp:36:23: warning: 'ce' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<aa<<" "<<ce+1<<" "<<da+1; ^