Compilare: main.cpp: In function 'int main()': main.cpp:61:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(z = 0; z < adiacent.size(); z++) | ~~^~~~~~~~~~~~~~~~~ main.cpp:65:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | if(z == adiacent.size()){ | ~~^~~~~~~~~~~~~~~~~~ main.cpp:91:15: warning: 'y' may be used uninitialized [-Wmaybe-uninitialized] 91 | printf("%d %d\n%c", x, y, color); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:12: note: 'y' was declared here 53 | int x, y; | ^ main.cpp:91:15: warning: 'x' may be used uninitialized [-Wmaybe-uninitialized] 91 | printf("%d %d\n%c", x, y, color); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:9: note: 'x' was declared here 53 | int x, y; | ^ main.cpp:91:15: warning: 'color' may be used uninitialized [-Wmaybe-uninitialized] 91 | printf("%d %d\n%c", x, y, color); | ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:52:10: note: 'color' was declared here 52 | char color; | ^~~~~