Compilare: main.cpp: In function 'void solve(int, int)': main.cpp:47:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0 ; j < vmin[1].size() ; j++){ ~~^~~~~~~~~~~~~~~~ main.cpp:61:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0 ; j < vmax[1].size() ; j++){ ~~^~~~~~~~~~~~~~~~ main.cpp:74:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < vmin[1].size() ; i++){ ~~^~~~~~~~~~~~~~~~ main.cpp:75:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0 ; j < supmin[i].size() ; j++) ~~^~~~~~~~~~~~~~~~~~ main.cpp:85:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i < vmin[1].size() ; i++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:101:17: warning: unused variable 'i2' [-Wunused-variable] int i,j,x,y,i2,j2; ^~ main.cpp:101:20: warning: unused variable 'j2' [-Wunused-variable] int i,j,x,y,i2,j2; ^~