236832026-01-27 17:14:56abcdSzivárványszámokcpp17Compilation error
#include <bits/stdc++.h>
using namespace std;

const int maxn=76;
ll dp[maxn][10][2][2];
string s;
int n;

ll cnt(int pos,int dig,bool tight,bool up){
    if(pos==n)return 1;
    if(dp[pos][dig][tight][up]!=-1)return dp[pos][dig][tight][up];
    ll res=0;
    int lim=tight?s[pos]-'0':9;
    for(int i=0;i<=lim;i++){
        if(i==dig)res+=cnt(pos+1,i,tight&&i==lim,up);
        if(i>dig&&!up)res+=cnt(pos+1,i,tight&&i==lim,false);
        if(i>dig&&up)continue;
        if(i<dig)res+=cnt(pos+1,i,tight&&i==lim,true);
    }
    return dp[pos][dig][tight][up]=res;
}

int main(){
    cin>>s;
    n=s.size();
    memset(dp,-1,sizeof(dp));
    cout<<cnt(0,0,true,false)-1<<'\n';
}
Compilation error
open /var/local/lib/isolate/428/box/a.out: no such file or directory
main.cpp:5:1: error: 'll' does not name a type
    5 | ll dp[maxn][10][2][2];
      | ^~
main.cpp:9:1: error: 'll' does not name a type
    9 | ll cnt(int pos,int dig,bool tight,bool up){
      | ^~
main.cpp: In function 'int main()':
main.cpp:26:12: error: 'dp' was not declared in this scope; did you mean 'dup'?
   26 |     memset(dp,-1,sizeof(dp));
      |            ^~
      |            dup
main.cpp:27:11: error: 'cnt' was not declared in this scope; did you mean 'int'?
   27 |     cout<<cnt(0,0,true,false)-1<<'\n';
      |           ^~~
      |           int