Submission #42774685

---

Source Code Expand

#include<bits/stdc++.h>
using namespace std;
namespace my_std{
	#define ll long long
	#define bl bool
	ll my_pow(ll a,ll b,ll mod){
		ll res=1;
		if(!b) return 1;
		while(b){
			if(b&1) res=(res*a)%mod;
			a=(a*a)%mod;
			b>>=1;
		}
		return res;
	}
	ll qpow(ll a,ll b){
		ll res=1;
		if(!b) return 1;
		while(b){
			if(b&1) res*=a;
			a*=a;
			b>>=1;
		}
		return res;
	}
	#define db double
	#define pf printf
	#define pc putchar
	#define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
	#define pfr(i,x,y) for(register ll i=(x);i>=(y);i--)
	#define go(u) for(ll i=head[u];i;i=e[i].nxt)
	#define enter pc('\n')
	#define space pc(' ')
	#define fir first
	#define sec second
	#define MP make_pair
	#define il inline
	#define inf 8e18
	#define random(x) rand()*rand()%(x)
	#define inv(a,mod) my_pow((a),(mod-2),(mod))
	il ll read(){
		ll sum=0,f=1;
		char ch=0;
		while(!isdigit(ch)){
			if(ch=='-') f=-1;
			ch=getchar();
		}
		while(isdigit(ch)){
			sum=sum*10+(ch^48);
			ch=getchar();
		}
		return sum*f;
	}
	il void write(ll x){
		if(x<0){
			x=-x;
			pc('-');
		}
		if(x>9) write(x/10);
		pc(x%10+'0');
	}
	il void writeln(ll x){
		write(x);
		enter;
	}
	il void writesp(ll x){
		write(x);
		space;
	}
}
using namespace my_std;
#define mod 998244353
ll n,m,f[440][440],sum[440][440],c[440][440],ans=1;
int main(){
	n=read();
	m=read();
	fr(i,0,400){
		c[i][0]=1;
		fr(j,1,i) c[i][j]=(c[i-1][j-1]+c[i-1][j])%mod;
	}
	fr(i,1,m) f[1][i]=1;
	fr(i,1,m) ans=(ans+c[n][1]*c[m][i]%mod)%mod;
	fr(i,2,n){
		fr(j,1,m) fr(k,1,m) sum[j][k]=(f[j][k]+sum[j-1][k]+sum[j][k-1]-sum[j-1][k-1]+mod)%mod;
		fr(k,1,m) f[1][k]=sum[1][k];
		fr(j,2,m) fr(k,j,m) f[j][k]=(sum[j][k]-sum[j][j-2]+mod)%mod;
		fr(j,1,m) fr(k,j,m) ans=(ans+f[j][k]*c[n][i]%mod*c[m][k]%mod)%mod;
	}
	write(ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:77:5: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   77 |  fr(i,0,400){
      |     ^
./Main.cpp:29:36: note: in definition of macro ‘fr’
   29 |  #define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
      |                                    ^
./Main.cpp:79:6: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   79 |   fr(j,1,i) c[i][j]=(c[i-1][j-1]+c[i-1][j])%mod;
      |      ^
./Main.cpp:29:36: note: in definition of macro ‘fr’
   29 |  #define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
      |                                    ^
./Main.cpp:81:5: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   81 |  fr(i,1,m) f[1][i]=1;
      |     ^
./Main.cpp:29:36: note: in definition of macro ‘fr’
   29 |  #define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
      |                                    ^
./Main.cpp:82:5: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   82 |  fr(i,1,m) ans=(ans+c[n][1]*c[m][i]%mod)%mod;
      |     ^
./Main.cpp:29:36: note: in definition of macro ‘fr’
   29 |  #define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
      |                                    ^
./Main.cpp:83:5: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   83 |  fr(i,2,n){
      |     ^
./Main.cpp:29:36: note: in definition of macro ‘fr’
   29 |  #define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
      |                                    ^
./Main.cpp:84:6: warning: ISO C++17 does not allow ‘register’ storage class specifier [-Wregister]
   84 |   fr(j,1,m) fr(k,1,m) sum[j][k]=(f[j][k]+sum[j-1][k]+sum[j][k-1]-sum[j-1][k-1]+mod)%mod;
      |      ^
./Main.cpp:29:36: note: in definition of macro ‘fr’
   29 |  #define fr(i,x,y) for(register ll i=(x);i<=(y);i++)
      |                                    ^
./Main.cpp:84:16: warning: ISO C++17 does not allo...

Judge Result