Compilare: main.cpp: In function 'int main()': main.cpp:36:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 36 | for(int i = 1; i <= n; i++) | ~~^~~~ main.cpp:37:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 37 | for(int j = 1; j <= m; j++) | ~~^~~~ main.cpp:49:22: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 49 | for(int i = 1; i < n; i++) | ~~^~~ main.cpp:50:26: warning: comparison of integer expressions of different signedness: 'int' and 'unsigned int' [-Wsign-compare] 50 | for(int j = 1; j < m; j++) { | ~~^~~