Compilare: main.cpp: In function 'int main()': main.cpp:20:17: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 20 | if(l<=a) | ~^~~ main.cpp:22:22: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 22 | else if(l>=b) | ~^~~ main.cpp:26:40: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 26 | for(r=(b-l-1)*(b-l)/2;l>=a&&u<=b;r+=b-u+1,--l,u=k/l+1); | ~^~~ main.cpp:26:46: warning: comparison of integer expressions of different signedness: 'long long unsigned int' and 'int' [-Wsign-compare] 26 | for(r=(b-l-1)*(b-l)/2;l>=a&&u<=b;r+=b-u+1,--l,u=k/l+1); | ~^~~