Submission #996108

#	Time	Username	Problem	Language	Result	Execution time	Memory
996108		vjudge1	Xylophone (JOI18_xylophone)	C++14	Compilation error	0 ms	0 KiB

xylophone

#include<bits/stdc++.h>
using namespace std;
#define int long long
void solve(int n){
    if(n==1){
       answer(1,1);
    }
    else if(n==2){
        answer(1,1);
        answer(1,2);
    }
    else{
        int diff2[n+1];
        int diff1[n+1];
        for(int i=3;i<=n;i++){
            diff1[i]=query(i-1,i);
            diff2[i]=query(i-2,i);
        }
        int a[n+1];
        int dist=query(1,2);
        for(int m=-1;m<=1;m+=2){
            a[1]=1e9;
            a[2]=a[1]+m*dist;
            int Min=min(a[1],a[2]);
            for(int i=3;i<=n;i++){
                if(diff2[i]==diff1[i]+abs(a[i-2]-a[i-1])){
                    if(a[i-2]>a[i-1]){
                        a[i]=a[i-1]-diff1[i];
                    }
                    else{
                        a[i]=a[i-1]+diff1[i];
                    }
                }
                else{
                    if(a[i-2]>a[i-1]){
                        a[i]=a[i-1]+diff1[i];
                    }
                    else{
                        a[i]=a[i-1]-diff1[i];
                    }
                }
                Min=min(a[1],a[i]);
            }
            Min--;
            bool mark[n+1]={false};
            bool flag=true;
            for(int i=1;i<=n;i++){
                a[i]-=Min;
                if(a[i]>n||a[i]<=1||mark[a[i]]){
                    flag=false;
                    break;
                }
                mark[a[i]]=true;
            }
            if(flag){
                for(int i=1;i<=n;i++){
                    answer(i,a[i]);
                }
            }
        }
    }
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(long long int)':
xylophone.cpp:6:8: error: 'answer' was not declared in this scope
    6 |        answer(1,1);
      |        ^~~~~~
xylophone.cpp:9:9: error: 'answer' was not declared in this scope
    9 |         answer(1,1);
      |         ^~~~~~
xylophone.cpp:16:22: error: 'query' was not declared in this scope
   16 |             diff1[i]=query(i-1,i);
      |                      ^~~~~
xylophone.cpp:20:18: error: 'query' was not declared in this scope
   20 |         int dist=query(1,2);
      |                  ^~~~~
xylophone.cpp:57:21: error: 'answer' was not declared in this scope
   57 |                     answer(i,a[i]);
      |                     ^~~~~~