Compilare: main.cpp: In function 'int binarySearch(int, vi&)': main.cpp:131:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses] int m = l + r >> 1; ~~^~~ main.cpp: In function 'Matrix mult(Matrix, Matrix)': main.cpp:169:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < a.size(); ++i) { ~~^~~~~~~~~~ main.cpp:171:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < b[0].size(); ++j) { ~~^~~~~~~~~~~~~ main.cpp:173:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < a[0].size(); ++k) { ~~^~~~~~~~~~~~~