Compilare: user.cpp: In function ‘int Nextint()’: user.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (;i < strlen(S);i++) ^ user.cpp: In function ‘int main()’: user.cpp:84:112: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n",((1LL * M1[0][0] * X) % Md + (1LL * M1[0][1] * Y) % Md + (1LL * M1[0][2] * Z) % Md) % Md); ^ user.cpp: In function ‘int Nextint()’: user.cpp:15:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",S); ^ user.cpp: In function ‘int main()’: user.cpp:67:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.in","r",stdin); ^ user.cpp:68:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("iepuri.out","w",stdout); ^