Submission #67546

#	Time	Username	Problem	Language	Result	Execution time	Memory
67546		JustasZ	Xylophone (JOI18_xylophone)	C++14	Compilation error	0 ms	0 KiB

xylophone

#include "xylophone.h"
void solve(int n)
{
    int arr[maxn];
    int two[maxn], three[maxn], sgn[maxn];
    for(int i=1; i<=n-1; i++)
        two[i]=query(i, i+1);
    for(int i=1; i<=n-2; i++)
        three[i]=query(i, i+2);
    if(three[1]==two[1]+two[2])
        sgn[1]=sgn[2]=1;
    else sgn[1]=1, sgn[2]=-1;
    for(int i=3; i<=n-1; i++)
    {
        if(two[i-1]+two[i]!=three[i-1])
            sgn[i]=-sgn[i-1];
        else sgn[i]=sgn[i-1];
    }
    arr[1]=1;
    int mn=INT_MAX;
    for(int i=2; i<=n; i++)
    {
        arr[i]=arr[i-1]+sgn[i-1]*two[i-1];
        mn=min(mn, arr[i]);
    }
    int add=1-mn;
    for(int i=1; i<=n; i++)
        arr[i]+=add;
    for(int i=1; i<=n; i++)
    {
        if(arr[i]==1)break;
        if(arr[i]==n)
        {
            for(int j=1; j<=n; j++)
                arr[j]=n-arr[j]+1;
            break;
        }
    }
    for(int i=1; i<=n; i++)
        answer(i, arr[i]);
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:4:13: error: 'maxn' was not declared in this scope
     int arr[maxn];
             ^~~~
xylophone.cpp:7:9: error: 'two' was not declared in this scope
         two[i]=query(i, i+1);
         ^~~
xylophone.cpp:9:9: error: 'three' was not declared in this scope
         three[i]=query(i, i+2);
         ^~~~~
xylophone.cpp:10:8: error: 'three' was not declared in this scope
     if(three[1]==two[1]+two[2])
        ^~~~~
xylophone.cpp:10:18: error: 'two' was not declared in this scope
     if(three[1]==two[1]+two[2])
                  ^~~
xylophone.cpp:11:9: error: 'sgn' was not declared in this scope
         sgn[1]=sgn[2]=1;
         ^~~
xylophone.cpp:11:9: note: suggested alternative: 'signed'
         sgn[1]=sgn[2]=1;
         ^~~
         signed
xylophone.cpp:12:10: error: 'sgn' was not declared in this scope
     else sgn[1]=1, sgn[2]=-1;
          ^~~
xylophone.cpp:12:10: note: suggested alternative: 'signed'
     else sgn[1]=1, sgn[2]=-1;
          ^~~
          signed
xylophone.cpp:15:12: error: 'two' was not declared in this scope
         if(two[i-1]+two[i]!=three[i-1])
            ^~~
xylophone.cpp:15:29: error: 'three' was not declared in this scope
         if(two[i-1]+two[i]!=three[i-1])
                             ^~~~~
xylophone.cpp:16:13: error: 'sgn' was not declared in this scope
             sgn[i]=-sgn[i-1];
             ^~~
xylophone.cpp:16:13: note: suggested alternative: 'signed'
             sgn[i]=-sgn[i-1];
             ^~~
             signed
xylophone.cpp:17:14: error: 'sgn' was not declared in this scope
         else sgn[i]=sgn[i-1];
              ^~~
xylophone.cpp:17:14: note: suggested alternative: 'signed'
         else sgn[i]=sgn[i-1];
              ^~~
              signed
xylophone.cpp:19:5: error: 'arr' was not declared in this scope
     arr[1]=1;
     ^~~
xylophone.cpp:20:12: error: 'INT_MAX' was not declared in this scope
     int mn=INT_MAX;
            ^~~~~~~
xylophone.cpp:20:12: note: suggested alternative: '__INT_MAX__'
     int mn=INT_MAX;
            ^~~~~~~
            __INT_MAX__
xylophone.cpp:23:25: error: 'sgn' was not declared in this scope
         arr[i]=arr[i-1]+sgn[i-1]*two[i-1];
                         ^~~
xylophone.cpp:23:34: error: 'two' was not declared in this scope
         arr[i]=arr[i-1]+sgn[i-1]*two[i-1];
                                  ^~~
xylophone.cpp:24:12: error: 'min' was not declared in this scope
         mn=min(mn, arr[i]);
            ^~~
xylophone.cpp:24:12: note: suggested alternative: 'mn'
         mn=min(mn, arr[i]);
            ^~~
            mn