Submission #163160

#	Time	Username	Problem	Language	Result	Execution time	Memory
163160		mat_v	Xylophone (JOI18_xylophone)	C++14	47 / 100	113 ms	504 KiB

xylophone

#include "xylophone.h"
#include <bits/stdc++.h>
using namespace std;


int n;
int niz[5005];
int simuliraj(int a, int b, int c){
    return max(max(a,b), c) - min(min(a,b), c);
}
void solve(int N){
    n = N;
    int poz1 = 0;
    int l = 1;
    int r = n;
    /*while(l < r){
        int mid = (l + r + 1) / 2;
        int pom = query(mid, n);
        if(pom == n - 1){
            l = mid;
        }
        else
            r = mid - 1;
    }
    poz1 = l;*/
    //cout << poz1 << endl;
    for(int i=n; i>=1; i--){
        if(query(i,n) == n-1){
            poz1 = i;
            break;
        }
    }
    niz[poz1] = 1;
    if(poz1>1){
        niz[poz1 - 1] = 1 + query(poz1 - 1, poz1);
    }
    niz[poz1 + 1] = 1 + query(poz1, poz1 + 1);
    for(int i=poz1 - 2; i >= 1; i--){
        int val1 = query(i,i+1);
        int prvi = niz[i + 1] - val1;
        int drugi = niz[i + 1] + val1;
        if(prvi <= 0 || drugi > n){
            if(prvi <= 0)niz[i] = drugi;
            else niz[i] = prvi;
            continue;
        }
        int val2 = query(i,i+2);
        int tmp1 = simuliraj(niz[i + 1], niz[i + 2], prvi);
        int tmp2 = simuliraj(niz[i + 1], niz[i + 2], drugi);
        if(tmp1 == val2)niz[i] = prvi;
        else niz[i] = drugi;
    }
    for(int i=poz1+2; i<=n; i++){
        int val1 = query(i-1,i);
        int prvi = niz[i - 1] - val1;
        int drugi = niz[i - 1] + val1;
        if(prvi <= 0 || drugi > n){
            if(prvi <= 0)niz[i] = drugi;
            else niz[i] = prvi;
            continue;
        }
        int val2 = query(i-2,i);
        int tmp1 = simuliraj(niz[i - 1], niz[i - 2], prvi);
        int tmp2 = simuliraj(niz[i - 1], niz[i - 2], drugi);
        if(tmp1 == val2)niz[i] = prvi;
        else niz[i] = drugi;
    }
    for(int i=1; i<=n; i++)answer(i, niz[i]);
}

Compilation message (stderr)

xylophone.cpp: In function 'void solve(int)':
xylophone.cpp:50:13: warning: unused variable 'tmp2' [-Wunused-variable]
         int tmp2 = simuliraj(niz[i + 1], niz[i + 2], drugi);
             ^~~~
xylophone.cpp:65:13: warning: unused variable 'tmp2' [-Wunused-variable]
         int tmp2 = simuliraj(niz[i - 1], niz[i - 2], drugi);
             ^~~~
xylophone.cpp:15:9: warning: unused variable 'l' [-Wunused-variable]
     int l = 1;
         ^
xylophone.cpp:16:9: warning: unused variable 'r' [-Wunused-variable]
     int r = n;
         ^

• Subtask 1: 11 / 11
• Subtask 2: 36 / 36
• Subtask 3: 0 / 53