Compilare: main.cpp: In function 'int main()': main.cpp:26:22: warning: unused variable 'add' [-Wunused-variable] int prev=0,sol=0,add=0,rem=s.length()-1; ^~~ main.cpp:22:48: warning: iteration 10005 invokes undefined behavior [-Waggressive-loop-optimizations] a[j][i]=(a[j][i]+a[(j+k)%7][i-1])%M; ~~~~~~~~~~~~~~^ main.cpp:16:18: note: within this loop for(int i=1;i<100005;i++) ~^~~~~~~