Compilare: main.cpp: In function 'int main()': main.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int i=0;i<strlen(a);i++) | ~^~~~~~~~~~ main.cpp:48:21: warning: iteration 99999 invokes undefined behavior [-Waggressive-loop-optimizations] 48 | factorial[i]=factorial[i-1]*i % MOD; | ^ main.cpp:46:24: note: within this loop 46 | for(long long i=2;i<=100001;i++) | ~^~~~~~~~