Borderou de evaluare (job #838922)

Compilare: main.cpp: In function 'int main()': main.cpp:16:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i=0; i+1<prev.size(); i++){ | ~~~^~~~~~~~~~~~ main.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 23 | for(int i=0; i<niv.size(); i++){ | ~^~~~~~~~~~~ main.cpp:7:9: warning: unused variable 'sum' [-Wunused-variable] 7 | int sum=0; | ^~~