Submission #1839319

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Source Code Expand

#include<cstdio>
inline int read()
{
	int x;char c;
	while((c=getchar())<'0'||c>'9');
	for(x=c-'0';(c=getchar())>='0'&&c<='9';)x=x*10+c-'0';
	return x;
}
const int MOD=998244353;
struct mint{int x;mint(int x=0):x(x){}};
inline mint operator+  (mint a,mint b){return a.x+b.x<MOD?a.x+b.x:a.x+b.x-MOD;}
inline mint operator-  (mint a){return MOD-a.x;}
inline mint operator-  (mint a,mint b){return a+-b;}
inline mint operator*  (mint a,mint b){return 1LL*a.x*b.x%MOD;}
inline mint operator<< (mint x,int y){mint r=1;for(;y;y>>=1,x=x*x)if(y&1)r=r*x;return r;}
inline mint operator~  (mint x){return x<<MOD-2;}
inline mint operator/  (mint a,mint b){return a*~b;}
inline mint&operator+= (mint&a,mint b){return a=a+b;}
inline mint&operator-= (mint&a,mint b){return a=a-b;}
inline mint&operator*= (mint&a,mint b){return a=a*b;}
inline mint&operator<<=(mint&x,int y){return x=x<<y;}
inline mint&operator/= (mint&a,mint b){return a=a/b;}
#define MN 200
int x[MN+5],y[MN+5];
int main()
{
	int n=read(),i,j,k,cnt;
	for(i=1;i<=n;++i)x[i]=read(),y[i]=read();
	mint ans=(mint(2)<<n)-n*(n+1)/2-1;
	for(i=1;i<=n;++i)for(j=1;j<=n;++j)if(i!=j)
	{
		for(cnt=2,k=1;k<=n;++k)if(k!=i&&k!=j)
			if((x[k]-x[i])*(y[j]-y[i])==(y[k]-y[i])*(x[j]-x[i]))++cnt;
		ans-=((mint(2)<<cnt)-cnt*(cnt+1)/2-1)/cnt/(cnt-1);
	}
	printf("%d",ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:36:17: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘mint’ [-Wformat=]
  printf("%d",ans);
                 ^

Judge Result