Submission #864492

#	Time	Username	Problem	Language	Result	Execution time	Memory
864492		AgentPengin	Lucky Numbers (RMI19_lucky)	C++14	28 / 100	1083 ms	3760 KiB

lucky

#include<bits/stdc++.h>
 
using namespace std;
 
#define read() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define day() time_t now = time(0);char* x = ctime(&now);cerr<<"Right Now Is : "<<x<<"\n"
 
#define ii pair<int,int>
#define X first
#define Y second 
 
const long long MAX = (int)2e5 + 5;
const long long INF = (int)1e9;
const long long MOD = (int)1e9 + 7;
 
int n,q;
int a[MAX];
int visited[MAX][2][2];
int dp[MAX][2][2];
int times = 0;
 
int f(int id,int l,int r,bool last,bool lower){
	if(id + l > r)return 1;
	if(visited[id][last][lower] == times)return dp[id][last][lower];
	visited[id][last][lower] = times;
	int &res = dp[id][last][lower] = 0;
	
	for(int digit = 0;digit < 10;digit++){
		if(!lower && digit > a[id + l])continue;
		if(last && digit == 3)continue;
		res = (res + f(id + 1,l,r,digit == 1,lower || digit < a[id + l])) % MOD;
	}
	return res;
}
signed main(){
	
	read();
	
	cin >> n >> q;
	
	for(int i = 1;i <= n;i++){
		char x;
		cin >> x;
		a[i] = x - '0';
	}	
	times++;
	cout << f(0,1,n,0,0) << '\n';
	for(int i = 1,c,u,v;i <= q;i++){
		cin >> c >> u >> v;
		if(c == 1){
			times++;
			cout << f(0,u,v,0,0) << '\n';
		}else{
			a[u] = v;
		}
	}
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 27
• Subtask 5: 0 / 9
• Subtask 6: 0 / 27