Submission #59373

#	Time	Username	Problem	Language	Result	Execution time	Memory
59373		duality	Koala Game (APIO17_koala)	C++11	24 / 100	299 ms	836 KiB

koala

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
typedef long long int LLI;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vpii;
#include "koala.h"

int B[100],R[100];
int minValue(int N, int W) {
    int i;
    for (i = 0; i < N; i++) B[i] = 0;
    B[0] = 1;
    playRound(B,R);
    for (i = 0; i < N; i++) {
        if (R[i] == 0) return i;
    }
    return 0;
}

int maxValue(int N, int W) {
    int i;
    for (i = 0; i < N; i++) B[i] = 1;
    playRound(B,R);
    int c = 0;
    for (i = 0; i < N; i++) {
        if (R[i] == 2) B[i] = 2;
        else B[i] = 0;
    }
    playRound(B,R);
    for (i = 0; i < N; i++) {
        if (R[i] == 3) c++,B[i] = 4;
        else B[i] = 0;
    }
    playRound(B,R);
    for (i = 0; i < N; i++) {
        if (R[i] == 5) B[i] = 11;
        else B[i] = 0;
    }
    playRound(B,R);
    for (i = 0; i < N; i++) {
        if (R[i] == 12) return i;
    }
}

int greaterValue(int N, int W) {
    int i;
    vi poss;
    for (i = 0; i < N; i++) poss.pb(i);
    int l = 1,r = N;
    while (1) {
        for (i = 0; i < N; i++) B[i] = 0;
        int val = 1;
        while (1) {
            int best1 = 0,c = W;
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best1 += i,c--;
                }
            }
            int best2 = 0;
            c = W;
            for (i = r; i >= l; i--) {
                if (c > val) best2 += i,c -= val+1;
            }
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best2 += i,c--;
                }
            }
            int best3 = r;
            c = W-(val+1);
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best3 += i,c--;
                }
            }
            int best4 = 0;
            c = W;
            for (i = r; i > l; i--) {
                if (c > val) best4 += i,c -= val+1;
            }
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best4 += i,c--;
                }
            }
            if (max(best1,best2) > max(best3,best4)) val++;
            else break;
        }
        if ((val == 1) && (2*poss.size() <= W)) {
            val = 2;
            int best1 = 0,c = W;
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best1 += i,c--;
                }
            }
            int best2 = 0;
            c = W;
            for (i = r; i >= l; i--) {
                if (c > val) best2 += i,c -= val+1;
            }
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best2 += i,c--;
                }
            }
            int best3 = r;
            c = W-(val+1);
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best3 += i,c--;
                }
            }
            int best4 = 0;
            c = W;
            for (i = r; i > l; i--) {
                if (c > val) best4 += i,c -= val+1;
            }
            for (i = N; i >= 1; i--) {
                if ((i < l) || (i > r)) {
                    if (c > 0) best4 += i,c--;
                }
            }
            if (max(best1,best2) > max(best3,best4)) val = 1;
        }
        //cout<<l<<","<<r<<","<<val<<endl;
        for (i = 0; i < poss.size(); i++) B[poss[i]] = val;//min(poss.size()-1,N/poss.size());
        playRound(B,R);
        if ((R[0] > 0) != (R[1] > 0)) return R[1] > 0;
        vi poss2;
        for (i = 0; i < poss.size(); i++) {
            if (R[0] > 0) {
                if (R[poss[i]] > 0) poss2.pb(poss[i]);
            }
            else {
                if (R[poss[i]] == 0) poss2.pb(poss[i]);
            }
        }
        if (R[0] > 0) l = r-poss2.size()+1;
        else r = l+poss2.size()-1;
        poss = poss2;
    }
    return 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 greaterValue(int, int)':
koala.cpp:93:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if ((val == 1) && (2*poss.size() <= W)) {
                            ~~~~~~~~~~~~~~^~~~
koala.cpp:131:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (i = 0; i < poss.size(); i++) B[poss[i]] = val;//min(poss.size()-1,N/poss.size());
                     ~~^~~~~~~~~~~~~
koala.cpp:135:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (i = 0; i < poss.size(); i++) {
                     ~~^~~~~~~~~~~~~
koala.cpp: In function 'int maxValue(int, int)':
koala.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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