제출 #282995

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
282995		AKaan37	Palindrome-Free Numbers (BOI13_numbers)	C++17	31.67 / 100	2 ms	640 KiB

numbers

//Bismillahirrahmanirrahim
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//█▄█─█──█──█▄█─█▄█
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#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define mp make_pair
#define endl "\n"
#define pb push_back
#define int long long
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo inf = 2000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 500005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,dp[30][6][15][15],aman;
int cev;
string s;
vector<int> v,vv;

inline int add(int x,int y){
	if(x+y>=inf){aman=1;return x+y-inf;}
	return x+y;
}

inline int f(int sira,int al,int last2,int last1){
	int cevv=0;
	if(sira==(int)v.size())return 1;
	if(~dp[sira][al][last2][last1])return dp[sira][al][last2][last1];
	for(int i=0;i<=9;i++){
		if(al==0 && i>v[sira])break;
		if(i==last2 || i==last1)continue;
		if(last1==10 && last2==10 && i==0){
			int yes=0;
			if(i<vv[sira])yes=1;
			cevv=add(cevv,f(sira+1,max(yes,al),10,10));
		}
		else{
			int yes=0;
			if(i<vv[sira])yes=1;
			cevv=add(cevv,f(sira+1,max(yes,al),last1,i));
		}
	}
	return dp[sira][al][last2][last1]=cevv;
}

inline int f1(int sira,int al,int last2,int last1){
	int cevv=0;
	//~ cout<<sira<<" : : "<<al<<" : : "<<last2<<" : : "<<last1<<endl;
	if(sira==(int)vv.size())return 1;
	if(~dp[sira][al][last2][last1])return dp[sira][al][last2][last1];
	for(int i=0;i<=9;i++){
		if(al==0 && i>vv[sira])continue;
		if(i==last2 || i==last1)continue;
		//~ if(sira==0 && i==0)continue;
		if(last1==10 && last2==10 && i==0){
			int yes=0;
			if(i<vv[sira])yes=1;
			cevv=add(cevv,f1(sira+1,max(yes,al),10,10));
		}
		else{
			int yes=0;
			if(i<vv[sira])yes=1;
			cevv=add(cevv,f1(sira+1,max(yes,al),last1,i));
		}
	}
	return dp[sira][al][last2][last1]=cevv;
}

main(void){
	scanf("%lld %lld",&n,&m);
	n--;
	if(n==-1)flag=1;
	while(n){
		v.pb(n%10);
		n/=10;
	}
	while(m){
		vv.pb(m%10);
		m/=10;
	}
	//~ v=vv;
	reverse(v.begin(),v.end());
	reverse(vv.begin(),vv.end());
	//~ for(int i=0;i<(int)vv.size();i++)printf("%lld",vv[i]);
	//~ printf("\n");
	//~ for(int i=0;i<(int)v.size();i++)printf("%lld",v[i]);
	//~ printf("\n");
	memset(dp,-1,sizeof(dp));
	//~ if(n==-1)
	cev=f1(0,0,10,10);
	memset(dp,-1,sizeof(dp));
	if(flag)cev=0;
	//~ cout<<cev<<endl;
	printf("%lld\n",cev-f(0,0,10,10));
	//~ cout<<aman<<endl;
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

numbers.cpp:85:10: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   85 | main(void){
      |          ^
numbers.cpp: In function 'int main()':
numbers.cpp:86:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   86 |  scanf("%lld %lld",&n,&m);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 25
• Subtask 2: 21.666666666666668 / 75