Submission #1055052

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055052		MrPavlito	Xylophone (JOI18_xylophone)	C++17	100 / 100	52 ms	972 KiB

xylophone

#include "xylophone.h"
#include <bits/stdc++.h>
//#define int long long
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define sc second
#define pii pair<int,int>

using namespace std;

const int MAXN = 5000+5;
const int mod7 = 1e9+7;
const long long inf = 1e18;

int querypair[MAXN];
int querytriple[MAXN];
int n;
vector<int>niz(MAXN);

bool resi(bool znak)
{
    vector<int>vis(MAXN,0);
    niz[1] = 0;
    if(znak)niz[2] = querypair[1];
    else niz[2] = -querypair[1];
    for(int i=3; i<=n; i++)
    {
        if(querypair[i-2] + querypair[i-1] != querytriple[i-2])znak = !znak;
        if(znak)niz[i] = niz[i-1] + querypair[i-1];
        else niz[i] = niz[i-1] - querypair[i-1];
    }
    int mn = *min_element(all(niz));
    bool moze = true;
    for(int i=1; i<=n; i++)
    {
        niz[i] = niz[i] -mn + 1;
        if(niz[i] > 0)vis[niz[i]] = i;
    }
    for(int i=1; i<=n; i++)if(vis[i] == 0)moze = false;
    if(vis[1] > vis[n])moze = false;
    return moze;
}



void solve(int N) {
    n = N;
	for(int i=1; i<n; i++)querypair[i] = query(i,i+1);
	for(int i=1; i<n-1; i++)querytriple[i] = query(i,i+2);
	if(resi(true))for(int i=1; i<=n; i++)answer(i, niz[i]);
	else
    {resi(false);
	for(int i=1; i<=n; i++)answer(i, niz[i]);
    }

}

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