Submission #15666596

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Source Code Expand

#include <bits/stdc++.h>
#define inf 0x3f3f3f3f
#define mod 998244353
#define int long long
using namespace std;
const int N=3*1e5+100;
int n,cnt[5],ans,vi[N],id[30];
char s[N];
vector <int> p[N];
signed main()
{
	id['R'-'A']=1;id['B'-'A']=2;id['G'-'A']=3;
	scanf("%lld",&n);
	scanf("%s",s+1);
	for (int i=1;i<=3*n;i++) p[id[s[i]-'A']].push_back(i);
	sort(p[1].begin(),p[1].end());
	sort(p[2].begin(),p[2].end());
	sort(p[3].begin(),p[3].end());
	for (int i=0;i<n;i++)
	{
		int MAX=0,MIN=inf;
		for (int j=1;j<=3;j++) MAX=max(MAX,p[j][i]),MIN=min(MIN,p[j][i]);
		vi[MAX]=1;
		vi[MIN]=3;
		for (int j=1;j<=3;j++) if (p[j][i]!=MAX && p[j][i]!=MIN) vi[p[j][i]]=2;		
	}
	ans=1;
	cnt[3]=n;
	for (int i=1;i<=3*n;i++)
	{
		ans=(ans*cnt[vi[i]])%mod;
		cnt[vi[i]]--;cnt[vi[i]-1]++;
	}
	printf("%lld\n",ans);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   13 |  scanf("%lld",&n);
      |  ~~~~~^~~~~~~~~~~
./Main.cpp:14:7: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   14 |  scanf("%s",s+1);
      |  ~~~~~^~~~~~~~~~

Judge Result