Submission #1217578

#	Time	Username	Problem	Language	Result	Execution time	Memory
1217578		user736482	Prisoner Challenge (IOI22_prison)	C++20	Compilation error	0 ms	0 KiB

prison

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define MOD 998244353
#define INF 1000000019
#define POT (1<<20)
#define INFL 1000000000000000099

vector<ll>v1={3,3,3,3,3,2,2,1,1},v2={0,1,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,7,7,8};

vector<ll>roz[5001];
ll pm[10],pm2[10];
vector<vector<int>>ans;

vector<vector<int>>devise_strategy(int n){
    ios_base::sync_with_stdio(0);cin.tie(0);
    pm[v1.size()]=0;
    for(ll i=0;i<=20;i++){
        ans.pb({});
        for(ll i=0;i<=n;i++)ans.back().pb(0);
    }
    pm2[0]=1;
    for(ll i=1;i<=v1.size();i++)pm2[i]=pm2[i-1]+v1[i-1];
    for(ll i=v1.size()-1;i>=0;i--)pm[i]=pm[i+1]*v1[i]+2;
    for(ll i=1;i<=n;i++){
        ll ak=i;
        for(ll j=0;j<v1.size();j++){
            ak--;
            if(ak==-1){
                roz[i].pb(-1-pm2[roz[i].size()]);
                break;
            }
            if(ak==pm[j]-2){
                roz[i].pb(-2-pm2[roz[i].size()]);break;
            }
            roz[i].pb(ak/(pm[j+1]));
            ak%=pm[j+1];
        }
        //for(ll j:roz[i])cout<<j<<" ";
        for(ll j=0;j<21;j++)roz[i].pb(0);
        //cout<<"\n"<<flush;
    }
    for(ll i=0;i<=20;i++){
        ans[i][0]=(v2[i])%2;
        //cout<<i<<": ";
        for(ll j=1;j<=n;j++){
            ll ph=v2[i];
            ans[i][j]=pm2[ph]+roz[j][ph];
            if(ph && roz[j][ph-1]!=i-pm2[ph-1]){
                if(roz[j][ph-1]<i-pm2[ph-1])ans[i][j]=-1;
                else ans[i][j]=-2;
            }
            if(ans[i][j]>=0){
                if(ph && roz[j][ph-1]<0)ans[i][j]=roz[j][ph-1]+pm2[ph-1];
            }
            //cout<<ans[i][j]<<" ";
        }
        if(ans[i][j]==-2)ans[i][j]=-1;
        else if(ans[i][j]==-1)ans[i][j]=-2;
        //cout<<"\n";
    }
    return ans;
}

Compilation message (stderr)

prison.cpp: In function 'std::vector<std::vector<int> > devise_strategy(int)':
prison.cpp:63:19: error: 'j' was not declared in this scope
   63 |         if(ans[i][j]==-2)ans[i][j]=-1;
      |                   ^