Submission #111407

#	Time	Username	Problem	Language	Result	Execution time	Memory
111407		igzi	Xylophone (JOI18_xylophone)	C++17	100 / 100	122 ms	512 KiB

xylophone

#include <bits/stdc++.h>
#include "xylophone.h"
#define maxN 5005

using namespace std;

int a[maxN];

void solve(int n) {
int i,x,y,p,q;
a[0]=0;
a[1]=query(1,2);
for(i=2;i<n;i++){
x=query(i,i+1);
y=query(i-1,i+1);
if(max(a[i-2],a[i-1]+x)-min(a[i-2],a[i-1])==y) a[i]=a[i-1]+x;
else a[i]=a[i-1]-x;
}
p=-maxN;
q=maxN;
for(i=0;i<n;i++){
    if(a[i]<q){
        q=a[i];
        x=i;
    }
    if(a[i]>p){
        p=a[i];
        y=i;
    }
}
if(y<x){
    for(i=0;i<n;i++){
        a[i]*=-1;
    }
    q=-p;
}
for(i=0;i<n;i++) {a[i]+=1-q; answer(i+1,a[i]);}
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:31:1: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
 if(y<x){
 ^~
xylophone.cpp:31:1: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]

• Subtask 1: 11 / 11
• Subtask 2: 36 / 36
• Subtask 3: 53 / 53