Compilare: main.cpp: In function 'void build(char)': main.cpp:79:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 79 | for(int i=0;i<cpsA.size();i++) | ~^~~~~~~~~~~~ main.cpp:80:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 80 | for(int j=0;j<cpsA[i].size();j++) | ~^~~~~~~~~~~~~~~ main.cpp:82:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 82 | for(int i=0;i<cpsB.size();i++) | ~^~~~~~~~~~~~ main.cpp:83:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for(int j=0;j<cpsB[i].size();j++) | ~^~~~~~~~~~~~~~~ main.cpp:85:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for(int i=0;i<vA.size();i++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:142:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<date>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 142 | for(int i=0;i<inA.size();i++) | ~^~~~~~~~~~~