Compilare: main.cpp: In function 'int main()': main.cpp:138:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | for (i=0; i<prima.size(); i++) | ~^~~~~~~~~~~~~ In function 'long long int dist(long long int, long long int)', inlined from 'int main()' at main.cpp:151:23: main.cpp:68:15: warning: 'capat2' may be used uninitialized [-Wmaybe-uninitialized] 68 | return h[a]-h[c]+h[b]-h[c]; | ~~~^ main.cpp: In function 'int main()': main.cpp:78:28: note: 'capat2' was declared here 78 | int n,q,i,j,u,v,capat1,capat2,dist1,dist2,sofar; | ^~~~~~ In function 'long long int dist(long long int, long long int)', inlined from 'int main()' at main.cpp:150:23: main.cpp:68:15: warning: 'capat1' may be used uninitialized [-Wmaybe-uninitialized] 68 | return h[a]-h[c]+h[b]-h[c]; | ~~~^ main.cpp: In function 'int main()': main.cpp:78:21: note: 'capat1' was declared here 78 | int n,q,i,j,u,v,capat1,capat2,dist1,dist2,sofar; | ^~~~~~