Compilare: main.cpp: In function 'int main()': main.cpp:63:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 63 | for (int i = 0; i <= n; i++) { | ~~^~~~ main.cpp:67:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 67 | for (int i = 1; i <= n; i++) | ~~^~~~ main.cpp:72:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (int j = 1; j <= m; j++) | ~~^~~~