Submission #858730

#	Time	Username	Problem	Language	Result	Execution time	Memory
858730		kim	Prisoner Challenge (IOI22_prison)	C++17	Compilation error	0 ms	0 KiB

prison

#include "prison.h"
#include<bits/stdc++.h>
using namespace std;
//#define endl '\n'
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define pb push_back

#define int ll

vector<vector<int>> devise_strategy(int N){
    vector<vector<int>> ans(61);
    vector<int> vec(N+1);
    vec[0]=0;
    for(int i=1;i<=N/2;++i) vec[i]=1;
    for(int i=N/2+1;i<=N;++i) vec[i]=2;
    ans[0]=vec;
    int n=1;
    for(int x=1,y=2,z=N/2;y<=60&&z>=1;x+=2,y+=2,z>>=1){
        vec[0]=((y/2)%2);
        int t=(1<<(x/2));
        int now=0;
        for(int k=0;k<t;++k){
            for(int i=1;i<=z/2;++i) vec[i+now]=x+2;
            for(int i=z/2+1;i<=z;++i) vec[i+now]=y+2;
            for(int i=z+1;i<=z+z;++i) vec[i+now]=-(1-vec[0])-1;
            now+=z+z;
        }
//        if(vec[0]==0) vec[1]=-1;
//        else vec[1]=-2;
        ans[x]=vec;
        now=0;
        for(int k=0;k<t;++k){
            for(int i=1;i<=z;++i) vec[i+now]=-(vec[0])-1;
            for(int i=z+1;i<=z+z/2;++i) vec[i+now]=x+2;
            for(int i=z+z/2+1;i<=z+z;++i) vec[i+now]=y+2;
            now+=z+z;
        }
//        if(vec[0]==0) vec[1]=-1;
//        else vec[1]=-2;
        ans[y]=vec;
        n+=2;
    }
//    cout<<n<<endl;
    ans.resize(n);
    return ans;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccDHN54j.o: in function `main':
grader.cpp:(.text.startup+0x194): undefined reference to `devise_strategy(int)'
collect2: error: ld returned 1 exit status