Compilare: main.cpp:3:60: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] typedef long long ll;using namespace std;ll dp[50001];main(){freopen("rogvaiv.in","r",stdin);freopen("rogvaiv.out","w",stdout);ll c,n,m;cin>>c>>n>>m;if(c==1){ll s=1;FOR(i,7,n+1){dp[i]=(7*dp[i-1]+s-dp[i-7]+m)%m;s=(s*7)%m;}cout<<dp[n];}else{ll s=2;FOR(i,7,n+1){dp[i]=(7*dp[i-1]+s-dp[i-6]+5*dp[i-7]+m)%m;s=(s*7)%m;}cout<<dp[n];}} ^ main.cpp: In function 'int main()': main.cpp:3:93: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] typedef long long ll;using namespace std;ll dp[50001];main(){freopen("rogvaiv.in","r",stdin);freopen("rogvaiv.out","w",stdout);ll c,n,m;cin>>c>>n>>m;if(c==1){ll s=1;FOR(i,7,n+1){dp[i]=(7*dp[i-1]+s-dp[i-7]+m)%m;s=(s*7)%m;}cout<<dp[n];}else{ll s=2;FOR(i,7,n+1){dp[i]=(7*dp[i-1]+s-dp[i-6]+5*dp[i-7]+m)%m;s=(s*7)%m;}cout<<dp[n];}} ^ main.cpp:3:127: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] typedef long long ll;using namespace std;ll dp[50001];main(){freopen("rogvaiv.in","r",stdin);freopen("rogvaiv.out","w",stdout);ll c,n,m;cin>>c>>n>>m;if(c==1){ll s=1;FOR(i,7,n+1){dp[i]=(7*dp[i-1]+s-dp[i-7]+m)%m;s=(s*7)%m;}cout<<dp[n];}else{ll s=2;FOR(i,7,n+1){dp[i]=(7*dp[i-1]+s-dp[i-6]+5*dp[i-7]+m)%m;s=(s*7)%m;}cout<<dp[n];}} ^