Compilare: main.cpp: In function 'int main()': main.cpp:95:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 95 | for (i = 0; i < poz[a].size(); i++) { | ~~^~~~~~~~~~~~~~~ main.cpp:96:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for (j = i + 1; j < poz[a].size(); j++) { | ~~^~~~~~~~~~~~~~~ main.cpp:107:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 107 | if (j == (poz[a].size() - 1)) { | ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:138:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | if (j < poz[a].size() && i == poz[a][j]) { | ~~^~~~~~~~~~~~~~~