Submission #516086

#	Time	Username	Problem	Language	Result	Execution time	Memory
516086		lovrot	Xylophone (JOI18_xylophone)	C++11	Compilation error	0 ms	0 KiB

xylophone

#include <bits/stdc++.h>
#include "xylophone.h"

using namespace std;
 
int rj[5000];
 
int ask(int s, int t){
    return query(s + 1, t + 1);
}

void solve(int n){

    rj[0] = 0;
    rj[1] = rj[0] + ask(0, 1);
    for(int i = 0; i + 2 < n; i++){
        int cur = abs(rj[i] - rj[i + 1]);
        int c = ask(i, i + 2);
        if(c == cur){
            int d = ask(i + 1, i + 2);
            if(rj[i + 1] > rj[i]){
                rj[i + 2] = rj[i + 1] - d;
            }
            else{
                rj[i + 2] = rj[i + 1] + d;
            }
        }
        else{
            int d = ask(i + 1, i + 2);
            if(c == d){
                if(rj[i + 1] > rj[i]){
                    rj[i + 2] = rj[i + 1] - c;
                }
                else{
                    rj[i + 2] = rj[i + 1] + c;
                }
            }
            else{
                if(rj[i] > rj[i + 1]){
                    rj[i + 2] = rj[i] - c;
                }
                else{
                    rj[i + 2] = rj[i] + c;
                }
            }
        }
    }
    int mn = 0, mx = 0;
    for(int i = 0; i < n; i++){
        if(rj[i] < rj[mn]) mn = i;
        if(rj[i] > rj[mx]) mx = i;
    }
    if(mx < mn){
        for(int i : a){
            i *= -1;
        }
    }
    mn = 1e9;
    for(int i : a) mn = min(mn, i);
    for(int i : a) i = i - mn + 1;
    for(int i = 0 ; i < n ; i++){
        answer(i + 1, rj[i]);
    }
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:54:21: error: 'a' was not declared in this scope
   54 |         for(int i : a){
      |                     ^
xylophone.cpp:59:17: error: 'a' was not declared in this scope
   59 |     for(int i : a) mn = min(mn, i);
      |                 ^
xylophone.cpp:60:17: error: 'a' was not declared in this scope
   60 |     for(int i : a) i = i - mn + 1;
      |                 ^