Compilare: main.cpp: In function 'int main()': main.cpp:97:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<points>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for(int k=1;k<a.size();k++) | ~^~~~~~~~~ main.cpp:102:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<points>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 102 | for(int k=1;k<b.size();k++) | ~^~~~~~~~~ main.cpp:115:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<points>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 115 | for(int k=3;k<a.size();k++) | ~^~~~~~~~~ main.cpp:130:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<points>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 130 | for(int k=3;k<b.size();k++) | ~^~~~~~~~~ main.cpp:143:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<points>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 143 | for(int k=1;k<a.size()-1;k++) | ~^~~~~~~~~~~ main.cpp:149:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<points>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 149 | for(int k=1;k<b.size()-1;k++) | ~^~~~~~~~~~~