Submission #569294

#	Time	Username	Problem	Language	Result	Execution time	Memory
569294		Ooops_sorry	Koala Game (APIO17_koala)	C++14	59 / 100	47 ms	336 KiB

koala

#include<bits/stdc++.h>

#ifndef LOCAL
   #include "koala.h"
#endif // LOCAL

using namespace std;
#define pb push_back

#ifdef LOCAL

mt19937 rnd(51);

static int N, W;
static int P[105];

static int maxQueries = 3200;
static int numQueries;

static void runGame(int F);
static void grader();

int main() {
    grader();
    return 0;
}

void playRound(int *B, int *R) {
    int i, j;

    int S = 0;
    for (i=0;i<N;++i) {
        if ( !(B[i] >= 0 && B[i] <= W) ) {
            printf("Invalid query.\n");
            exit(0);
        }
        S += B[i];
    }
    if (S > W) {
        printf("Invalid query.\n");
        exit(0);
    }

    numQueries++;
    if (numQueries > maxQueries) {
        printf("Too many queries.\n");
        exit(0);
    }

    int cache[2][205];
    int num[2][205];
    char taken[105][205];

    for (i=0;i<205;++i) {
        cache[1][i] = 0;
        num[1][i] = 0;
    }

    for (i=0;i<N;++i) {
        int v = B[i]+1;
        int ii = i&1;
        int o = ii^1;
        for (j=0;j<=W;++j) {
            cache[ii][j] = cache[o][j];
            num[ii][j] = num[o][j];
            taken[i][j] = 0;
        }
        for (j=W;j>=v;--j) {
            int h = cache[o][j-v] + P[i];
            int hn = num[o][j-v] + 1;
            if (h > cache[ii][j] || (h == cache[ii][j] && hn > num[ii][j])) {
                cache[ii][j] = h;
                num[ii][j] = hn;
                taken[i][j] = 1;
            } else {
                taken[i][j] = 0;
            }
        }
    }

    int cur = W;
    for (i=N-1;i>=0;--i) {
        R[i] = taken[i][cur] ? (B[i] + 1) : 0;
        cur -= R[i];
    }
}

#endif

int minValue(int N, int W) {
    return 0;
}

int maxValue(int n, int w) {
    vector<int> arr(n);
    iota(arr.begin(), arr.end(), 0);
    while (arr.size() > 1) {
        int sz = arr.size();
        int can = w / sz;
        int b[n], r[n];
        for (int i = 0; i < n; i++) b[i] = 0;
        for (auto to : arr) {
            b[to] = can;
        }
        playRound(b, r);
        vector<int> nw;
        for (auto to : arr) {
            if (b[to] == can && r[to] > can) {
                nw.pb(to);
            }
        }
        swap(arr, nw);
    }
    return arr[0];
}

int greaterValue(int N, int W) {
    return 0;
}

void allValues(int n, int w, int *p) {
    int cnt = 0;
    for (int i = 0; i < n; i++) p[i] = -1;
    for (int i = 0; i < n; i++) {
        vector<int> arr;
        for (int j = 0; j < n; j++) {
            if (p[j] == -1) {
                arr.pb(j);
            }
        }
        int now = (w == 2 * n ? 2 : 1);
        while (arr.size() > 1) {
            int sz = arr.size();
            int b[n], r[n];
            if (w == 2 * n) now = w / sz;
            for (int j = 0; j < n; j++) b[j] = 0;
            for (auto to : arr) {
                b[to] = now;
            }
            playRound(b, r);
            vector<int> nw;
            for (auto to : arr) {
                if (b[to] == now && r[to] > now) {
                    nw.pb(to);
                }
            }
            if (nw.size() == 0) {
                now--;
            } else if (arr.size() == nw.size()) {
                now++;
            } else {
                swap(arr, nw);
                now *= 2;
            }
        }
        p[arr[0]] = n - i;
    }
}

#ifdef LOCAL

static void runGame(int F) {
    int i;
    N = 100;
    W = 100;
    for (i=0;i<N;++i) {
        P[i] = i;
    }
    numQueries = 0;
    if (F == 1) {
        printf("%d\n", minValue(N, W));
    } else if (F == 2) {
        printf("%d\n", maxValue(N, W));
    } else if (F == 3) {
        printf("%d\n", greaterValue(N, W));
    } else if (F == 4) {
        int userP[105];
        allValues(N, W, userP);
        for (i=0;i<N;i++) {
            printf("%d ",userP[i]);
            assert(userP[i] == P[i]);
        }
        printf("\n");
    }
    printf("Made %d calls to playRound.\n", numQueries);
}

static void grader() {
    int i;

    int F, G;
    scanf("%d %d",&F,&G);

    for (i=0;i<G;i++) {
        runGame(F);
    }
}

#endif

Compilation message (stderr)

koala.cpp: In function 'void allValues(int, int, int*)':
koala.cpp:122:9: warning: unused variable 'cnt' [-Wunused-variable]
  122 |     int cnt = 0;
      |         ^~~

• Subtask 1: 0 / 4
• Subtask 2: 15 / 15
• Subtask 3: 0 / 18
• Subtask 4: 10 / 10
• Subtask 5: 34 / 53