Borderou de evaluare (job #624860)

Compilare: main.cpp: In function 'int main()': main.cpp:26:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 26 | for (int j = 0; j < a[1].size(); j++) | ~~^~~~~~~~~~~~~ main.cpp:30:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 30 | for (int k = 0; k < a[i].size(); k++) | ~~^~~~~~~~~~~~~ main.cpp:40:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'unsigned int'} [-Wsign-compare] 40 | for (int i = 0; i < a[j].size(); i++) | ~~^~~~~~~~~~~~~