Compilare: main.cpp: In function 'int main()': main.cpp:49:44: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=] for(k=1;k<=m;k++) { scanf("%d %d",&i,&j); ^ main.cpp:49:44: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=] main.cpp:44:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("coprime.in","r",stdin); ^ main.cpp:45:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("coprime.out","w",stdout); ^ main.cpp:47:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&n,&m); ^ main.cpp:49:45: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] for(k=1;k<=m;k++) { scanf("%d %d",&i,&j); ^