Submission #312521

#	Time	Username	Problem	Language	Result	Execution time	Memory
312521		mohamedsobhi777	Mouse (info1cup19_mouse)	C++14	Compilation error	0 ms	0 KiB

mouse

#include "grader.h"
#include<bits/stdc++.h>
using namespace std ; 
int n, num ;
vector<int> per, ans ; 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int vis[N] ;
vector<int> indi ; 

void del(int x){
        for(int i = 0 ;i < (int) indi.size() ; ++ i){
                if(indi[i] == x){
                        indi.erase(indi.begin() + i , indi.begin() + i + 1) ; 
                        return ; 
                }
        }
}

void print(){
        for(int i = 0 ;i < n; ++ i)
                cout<< ans[i] <<" " ;
        cout<<".\n" ; 
}

void solve(int n){ 

        for(int i = 1;i <= n ; ++ i){
                ans.push_back(i) ; 
        }
        for(int i = 0 ;i < n; ++ i){
                indi.push_back(i) ; 
        }
        for(int i = 0 ;i < n; ++ i){
        //        int x ; cin >> x ;
        //        per.push_back(x) ; 
        }       

        random_shuffle(ans.begin() , ans.end() ) ; 
        int tim = 0 ; 
        int las = 0 ; 
        las = query(ans) ; 
        
        while(tim ++ < 1000000){
                int sz = (int) indi.size() ; 
                int x = rng() % sz ; 
                int y = rng() % sz ; 
                x = indi[x] ; 
                y = indi[y] ; 
                if(x == y)continue ; 
                swap(ans[x],ans[y]) ; 
                int now = query(ans) ; 
                if( abs(now - las) == 2){
                        del(x) ; del(y) ; 
                }

                if(now < las)swap(ans[x],ans[y]) ;
                las = max(las , now) ; 
                if(now == n)
                        break ;
        }
        return ; 
        if(las == n)
                cout<<"ok " ; 
        else {
                for(auto u : ans)cout<< u <<" " ; 
                        cout<<"incorrect " ; 
        }
        return ; 
}

Compilation message (stderr)

mouse.cpp:8:9: error: 'N' was not declared in this scope
    8 | int vis[N] ;
      |         ^