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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#351402#8337. Counter Reset Problemucup-team134RE 1ms3880kbC++171.6kb2024-03-11 21:36:542024-03-11 21:36:55

Judging History

你现在查看的是最新测评结果

  • [2024-03-11 21:36:55]
  • 评测
  • 测评结果:RE
  • 用时:1ms
  • 内存:3880kb
  • [2024-03-11 21:36:54]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mod=1e9+9;
int add(int x,int y){x+=y;return x>=mod?x-mod:x;}
int sub(int x,int y){x-=y;return x<0?x+mod:x;}
int mul(int x,int y){return (ll)x*y%mod;}
void ckadd(int&x,int y){x=add(x,y);}

const int N=5050;
char L[N],R[N];
int n;

int Add(int mask,int x){
	if(x==0)return mask;
	x--;
	for(int i=x;i>=0;i--){
		if(mask>>i&1){
			mask^=1<<i;
			break;
		}
	}
	return mask|(1<<x);
}

const int M=1<<9;
int dp[2][M];
int Calc(char*s){
	int all=0;
	int now=0,pre=1;
	for(int mask=0;mask<M;mask++)dp[now][mask]=0;
	for(int i=1;i<=n;i++){
		swap(now,pre);
		for(int mask=0;mask<M;mask++){
			dp[now][mask]=0;
		}
		for(int x=0;x<s[i]-'0';x++){
			ckadd(dp[now][Add(all,x)],1);
		}
		all=Add(all,s[i]-'0');
		for(int x=0;x<10;x++){
			for(int mask=0;mask<M;mask++){
				ckadd(dp[now][Add(mask,x)],dp[pre][mask]);
			}
		}
	}
	ckadd(dp[now][all],1);
	int ans=0;
	for(int mask=0;mask<M;mask++){
		ckadd(ans,mul(__builtin_popcount(mask),dp[now][mask]));
	}
	ans=mul(ans,10);
	int po=1;
	for(int i=1;i<n;i++)po=mul(po,10);
	for(int fir=0;fir<s[1]-'0';fir++){
		ans=sub(ans,mul(po,fir));
	}
	int val=0;
	for(int i=2;i<=n;i++){
		val=mul(val,10);
		ckadd(val,s[i]-'0');
	}
	ckadd(val,1);
	ans=sub(ans,mul(val,s[1]-'0'));
	return ans;
}

int main(){
	scanf("%i",&n);
	scanf("%s %s",L+1,R+1);
	int ans=Calc(R);
	bool zero=true;
	for(int i=1;i<=n;i++)if(L[i]!='0')zero=false;
	if(!zero){
		L[n]--;
		for(int i=n;i>1;i--){
			if(L[i]<0){
				L[i]+=10;
				L[i-1]--;
			}
		}
		ans=sub(ans,Calc(L));
	}
	printf("%i\n",ans);
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 3872kb

input:

2
19 23

output:

51

result:

ok 1 number(s): "51"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3732kb

input:

6
100084 518118

output:

9159739

result:

ok 1 number(s): "9159739"

Test #3:

score: 0
Accepted
time: 1ms
memory: 3864kb

input:

12
040139021316 234700825190

output:

771011551

result:

ok 1 number(s): "771011551"

Test #4:

score: 0
Accepted
time: 0ms
memory: 3732kb

input:

1
5 6

output:

9

result:

ok 1 number(s): "9"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3792kb

input:

2
06 72

output:

609

result:

ok 1 number(s): "609"

Test #6:

score: 0
Accepted
time: 0ms
memory: 3880kb

input:

3
418 639

output:

2912

result:

ok 1 number(s): "2912"

Test #7:

score: -100
Runtime Error

input:

5000
0517031462295902016787205636287842713710486158285091634061538907131690102542613263904109051429895599547551249682345434244517372300211330243052548402051817254239088411128320032011447373157210750522722463984933692575118884942425236057310901139962840332684448050855646476051878413350560455871387882...

output:


result: