Compilare: main.cpp: In function 'int main()': main.cpp:31:13: warning: 'a' may be used uninitialized [-Wmaybe-uninitialized] 31 | s[1]=a[1]; | ~~~^ main.cpp:12:9: note: 'a' declared here 12 | int a[2000001],b[2000001],p,mod; | ^ main.cpp:36:11: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized] 36 | sb=b[1]; | ~~~^ main.cpp:12:20: note: 'b' declared here 12 | int a[2000001],b[2000001],p,mod; | ^ main.cpp:36:11: warning: 'b' may be used uninitialized [-Wmaybe-uninitialized] 36 | sb=b[1]; | ~~~^ main.cpp:12:20: note: 'b' declared here 12 | int a[2000001],b[2000001],p,mod; | ^