Submission #402915

#	Time	Username	Problem	Language	Result	Execution time	Memory
402915		A_D	Koala Game (APIO17_koala)	C++14	37 / 100	68 ms	444 KiB

koala

#include "koala.h"


#include <bits/stdc++.h>

using namespace std;

int minValue(int N, int W) {
    int ans=0;
    int B[N];
    int R[N];
    memset(B,0,sizeof(B));
    memset(R,0,sizeof(R));
    B[0]=1;
    playRound(B,R);
    for(int i=1;i<N;i++)if(R[i]==0)ans=i;
    return ans;
}

int maxValue(int N, int W) {
    int l=1,r=13,ans;
    int B[N];
    int R[N];
    bool me[N];
    int cnt=1;
    memset(B,0,sizeof(B));
    memset(me,1,sizeof(me));
    while(1){
        memset(B,0,sizeof(B));
        for(int i=0;i<N;i++){
            if(me[i]){
                B[i]=cnt;
            }
        }
        playRound(B, R);
        int u=0;
        for(int i=0;i<N;i++){
            if(me[i]&&R[i]>cnt){
                u++;
                me[i]=1;
            }
            else me[i]=0;
        }
        cnt=W/u;
        cnt=min(cnt,13);
        if(u==1){
            for(int i=0;i<N;i++){
                if(me[i])return i;
            }
        }
    }
}

int greaterValue(int N, int W) {
    int l=1,r=13,ans;
    int B[N];
    int R[N];
    memset(B,0,sizeof(B));
    while(l<=r){
        int mid=(l+r)/2;
        B[0]=mid;
        B[1]=mid;
        playRound(B, R);
        int a=R[0]>mid;
        int b=R[1]>mid;
        if(a>b)return 0;
        if(b>a)return 1;
        if(a){
            l=mid+1;
        }
        else r=mid-1;
    }
    assert(0);
}

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.
    }
}

Compilation message (stderr)

koala.cpp: In function 'int maxValue(int, int)':
koala.cpp:21:9: warning: unused variable 'l' [-Wunused-variable]
   21 |     int l=1,r=13,ans;
      |         ^
koala.cpp:21:13: warning: unused variable 'r' [-Wunused-variable]
   21 |     int l=1,r=13,ans;
      |             ^
koala.cpp:21:18: warning: unused variable 'ans' [-Wunused-variable]
   21 |     int l=1,r=13,ans;
      |                  ^~~
koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:55:18: warning: unused variable 'ans' [-Wunused-variable]
   55 |     int l=1,r=13,ans;
      |                  ^~~

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