Submission #1591487

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<cstring>
typedef long long ll;
const int N=105,MOD=998244353,H0=19260817,H1=2333;
char s[N],t[N];
ll f[N][2],g[N][2];
int n,ans;
int main()
{
	scanf("%d",&n);
	scanf("%s",s+1);
	scanf("%s",t+1);
	ll t0=1,t1=1;
	for(int i=n;i;i--)
	{
		f[i][0]=(f[i+1][0]+t0*s[i])%MOD;
		f[i][1]=(f[i+1][1]+t1*s[i])%MOD;
		t0=t0*H0%MOD;
		t1=t1*H1%MOD;
	}
	for(int i=1;i<=n;i++)
	{
		g[i][0]=(g[i-1][0]*H0+t[i])%MOD;
		g[i][1]=(g[i-1][1]*H1+t[i])%MOD;
	}
	ans=0;
	for(int i=1;i<=n;i++)
		if(f[i][0]==g[n-i+1][0] && f[i][1]==g[n-i+1][1])
		{
			ans=n-i+1;
			break;
		}
	printf("%d\n",n*2-ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:11:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:12:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",s+1);
                 ^
./Main.cpp:13:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s",t+1);
                 ^

Judge Result