Submission #403784

#	Time	Username	Problem	Language	Result	Execution time	Memory
403784		yoavL	Koala Game (APIO17_koala)	C++14	29 / 100	77 ms	332 KiB

koala

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <unordered_set>
#include <map>
#include <unordered_map>
#include <queue>
#include <stack>
#include <bitset>
#include <math.h>
#include <fstream>
#include <iomanip>
#include "koala.h"

using namespace std;

using ll = int;
using ld = long double;
using vll = vector<ll>;
using vvll = vector<vll>;
using vvvll = vector<vvll>;
using vvvvll = vector<vvvll>;
using vb = vector<bool>;
using vvb = vector<vb>;
using vvvb = vector<vvb>;
using vld = vector<ld>;
using vstr = vector<string>;
using pll = pair<ll, ll>;
using vpll = vector<pll>;
using vvpll = vector<vpll>;
using pb = pair<bool, bool>;
using vpb = vector<pb>;
using vvpb = vector<vpb>;
using vi = vector<int>;
using vvi = vector<vi>;

const ll mod = (ll)1e9 + 7;
const ll inf = (ll)1e18;


#define F           first
#define S           second

#define FAST        ios_base::sync_with_stdio(0)
#define FASTIN		cin.tie(0)
#define FASTOUT		cout.tie(0)

#define upmin(a, b) a = min(a, b)
#define upmax(a, b) a = max(a, b)

#define whatvec(v) cout << #v << ": "; for(auto it = v.begin(); it != v.end(); ++it) cout << *it << " "; cout << endl;
#define prv(v) cout << #v << ": "; for(auto it = v.begin(); it != v.end(); ++it) cout << *it << " "; cout << endl;
#define wpr(x) cout << #x << " = " << (x) << endl;
#define wprv(v) cout << #v << ": "; for(auto it = v.begin(); it != v.end(); ++it) cout << *it << " "; cout << endl;
#define what(x) cout << #x << " = " << (x) << "\n";
#define pr(x) cout <<x << endl;

#define rep(i,s,e) for(ll i = s;i < e; i++)

#define all(x) x.begin(),x.end()
#define pb push_back


const ll len = 100;

ll a[len], b[len];
void fill(ll ind)
{
    for (ll i = 0; i < len; i++) a[i] = 0;
    a[ind] = 1;
}

void pra()
{
    pr("a:");
    rep(i, 0, len) {
        cout << a[i] << " ";
    }
    cout << endl;
}


void prb()
{
    pr("b:");
    rep(i, 0, len) {
        cout << b[i] << " ";
    }
    cout << endl;
}

int minValue(int N, int W) {
    pr("here");
    // TODO: Implement Subtask 1 solution here.
    // You may leave this function unmodified if you are not attempting this
    // subtask.
    ll n = N, w = W;
    

    //vll a(n, 1);
    fill(0);
    rep(i, 0, len) b[i] = -1;
    bool ok = false;
    playRound(a, b);

    rep(i, 0, len) if (b[i] != -1) ok = true;
    if (!ok) while (true);
    for (ll i = 0; i < len; i++) {
        if (b[i] == 0) return i;
    }
    fill(1);
    playRound(a, b);
    rep(i, 0, len) {
        if (b[i] == 0) return i;
    }
    while (true);
    return 0;
}


int rec(vll ind)
{
    if (ind.size() == 1) {
        return ind[0];
    }
    ll sz = ind.size();
    ll cap = len / sz;
    rep(i, 0, len) {
        a[i] = 0;
    }
    rep(i, 0, sz) {
        a[ind[i]] = cap;
    }
    /*
    pr("a:");
    rep(i, 0, len) {
        cout << a[i] << " ";
    }
    cout << endl;
    */
    playRound(a, b);
    /*
    pr("b:");
    rep(i, 0, len) {
        cout << b[i] << " ";
    }
    cout << endl;
    */
    ll maxv = 0;
    rep(i, 0, len) {
        upmax(maxv, b[i]);
    }
    vll nind;
    rep(i, 0, len) {
        if (b[i] == maxv) nind.push_back(i);
    }
    return rec(nind);
}

int maxValue(int N, int W) {
    // TODO: Implement Subtask 2 solution here.
    // You may leave this function unmodified if you are not attempting this
    // subtask.


    vll ind;
    for (ll i = 0; i < len; i++) ind.push_back(i);
    return rec(ind);
}

int put_v(ll v)
{
    //wpr(v);
    rep(i, 0, len) {
        a[i] = 0;
    }
    a[0] = a[1] = v;
    playRound(a, b);
    //prb();
    if (b[0] > b[1]) return 0;
    if (b[0] < b[1]) return 1;
    if (b[0] > 0) return 2;
    return 3;
}

int greaterValue(int N, int W) {
    // TODO: Implement Subtask 3 solution here.
    // You may leave this function unmodified if you are not attempting this
    // subtask.

    ll low = 1, high = len / 4, mid;
    while (low <= high) {
        mid = (low + high) / 2;

        ll res = put_v(mid);
        //wpr(res);
        if (res <= 1) return res;
        if (res == 2) {
            low = mid + 1;
        }
        else {
            high = mid - 1;
        }
    }
}



void allValues(int N, int W, int* P) {
    if (W == 2 * N) {
        // TODO: Implement Subtask 4 solution here.
        // You may leave this block unmodified if you are not attempting this
        // subtask.
    }
    else {
        // TODO: Implement Subtask 5 solution here.
        // You may leave this block unmodified if you are not attempting this
        // subtask.
    }
}


/*

3 1
6 6
5 3 2 1 6 4

3 1
6 6
3 5 2 1 6 4


3 1
6 6
1 2 5 3 6 4


3 1
5 5
5 4 3 2 1


*/

Compilation message (stderr)

koala.cpp: In function 'int minValue(int, int)':
koala.cpp:100:8: warning: unused variable 'n' [-Wunused-variable]
  100 |     ll n = N, w = W;
      |        ^
koala.cpp:100:15: warning: unused variable 'w' [-Wunused-variable]
  100 |     ll n = N, w = W;
      |               ^
koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:208:1: warning: control reaches end of non-void function [-Wreturn-type]
  208 | }
      | ^

• Subtask 1: 0 / 4
• Subtask 2: 15 / 15
• Subtask 3: 14 / 18
• Subtask 4: 0 / 10
• Subtask 5: 0 / 53