Compilare: main.cpp: In function 'int main()': main.cpp:45:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < v[(z[i].dr - z[i].st + 1)].size(); ++j) ~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:51:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < qu[i].size(); ++j) ~~^~~~~~~~~~~~~~ main.cpp:70:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < qu[i].size(); ++j) ~~^~~~~~~~~~~~~~ main.cpp:79:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < qu[i].size(); ++j) ~~^~~~~~~~~~~~~~