Submission #977021

#	Time	Username	Problem	Language	Result	Execution time	Memory
977021		hmm789	Koala Game (APIO17_koala)	C++14	37 / 100	56 ms	728 KiB

koala

#include "koala.h"
#include <bits/stdc++.h>
using namespace std;
 
int minValue(int N, int W) {
    int a[N], b[N];
    a[0] = 1;
    for(int i = 1; i < N; i++) a[i] = 0;
    playRound(a, b);
    for(int i = 0; i < N; i++) if(!b[i]) return i;
    return 0;
}
 
int maxValue(int N, int W) {
    int a[N], b[N];
    for(int i = 0; i < N; i++) a[i] = 1;
    playRound(a, b);
    set<int> s;
    for(int i = 0; i < N; i++) if(b[i]) s.insert(i);
    memset(a, 0, sizeof(a));
    for(int i : s) a[i] = 2;
    playRound(a, b);
    for(int i = 0; i < N; i++) if(s.find(i) != s.end() && !b[i]) s.erase(i);
    memset(a, 0, sizeof(a));
    for(int i : s) a[i] = 4;
    playRound(a, b);
    for(int i = 0; i < N; i++) if(s.find(i) != s.end() && !b[i]) s.erase(i);
    memset(a, 0, sizeof(a));
    for(int i : s) a[i] = 11;
    playRound(a, b);
    for(int i = 0; i < N; i++) if(s.find(i) != s.end() && !b[i]) s.erase(i);
    return *s.begin();
}
 
int greaterValue(int N, int W) {
    int a[N], b[N];
    memset(a, 0, sizeof(a));
    int l = 1, r = 9, m;
    while(l <= r) {
        m = (l+r)/2;
        a[0] = a[1] = m;
        playRound(a, b);
        if(b[0] && b[1]) l = m+1;
        else if(!b[0] && !b[1]) r = m-1;
        else if(b[0] && !b[1]) return 0;
        else return 1;
    }
    return 0;
}
 
void allValues(int N, int W, int *P) {
    int a[N], b[N];
    memset(a, 0, sizeof(a));
    if (W == 2*N) {
        int c[N];
        for(int i = 0; i < N; i++) c[i] = i;
        sort(c, c+N, [&](int x, int y) {
            if(x == y) return false;
            a[x] = a[y] = 100;
            playRound(a, b);
            a[x] = a[y] = 0;
            return b[y] > 100;
        });
        for(int i = 0; i < N; i++) P[c[i]] = i+1;
    } else {
        // TODO: Implement Subtask 5 solution here.
        // You may leave this block unmodified if you are not attempting this
        // subtask.
    }
}

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