Compilare: main.cpp: In function 'void r2()': main.cpp:110:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for(int i=0; i<sume.size()-1; i+=2){ | ~^~~~~~~~~~~~~~ main.cpp:112:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 112 | if(i<sume.size()-2){ | ~^~~~~~~~~~~~~~ main.cpp:124:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 124 | for(int i=1; i<sume.size()-1; i+=2){ | ~^~~~~~~~~~~~~~ main.cpp:126:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 126 | if(i<sume.size()-2){ | ~^~~~~~~~~~~~~~ main.cpp:72:23: warning: unused variable 'maxim' [-Wunused-variable] 72 | long long sCur=0, maxim=0, l=0; | ^~~~~