Compilare: main.cpp: In function 'int main()': main.cpp:30:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < liste[el - 1].size(); ++i) { ~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:31:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < liste[1].size(); ++j) { ~~^~~~~~~~~~~~~~~~~ main.cpp:58:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < liste[3].size(); ++i) ~~^~~~~~~~~~~~~~~~~ main.cpp:59:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < liste[3].size(); ++j) { ~~^~~~~~~~~~~~~~~~~ main.cpp:17:27: warning: unused variable 'gasit' [-Wunused-variable] int n, S, nrSecv, el, gasit, a, b, c; ^~~~~