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Submission #723260

# Submission time Handle Problem Language Result Execution time Memory
723260 2023-04-13T12:50:13 Z nguyentunglam Koala Game (APIO17_koala) C++17
47 / 100
 80 ms 336 KB 
#include "koala.h"
#include<bits/stdc++.h>
using namespace std;
const int N = 110;
int b[N], r[N], mark[N], ans[N], c[N], order[N];
int n, w;
int minValue(int n, int w) {
    for(int i = 0; i < n; i++) b[i] = 0;
    b[0] = 1;
    playRound(b, r);
    for(int i = 0; i < n; i++) if (!r[i]) return i;
    return 0;
}

int maxValue(int n, int w) {
    for(int i = 0; i < n; i++) mark[i] = 1;
    while (1) {
        int cnt = 0;
        for(int i = 0; i < n; i++) cnt += mark[i];
        if (cnt == 1) break;
        int val = w / cnt;
        for(int i = 0; i < n; i++) {
            if (mark[i]) b[i] = val;
            else b[i] = 0;
        }
        playRound(b, r);
        for(int i = 0; i < n; i++) mark[i] &= (r[i] > 0);
    }
    for(int i = 0; i < n; i++) if (mark[i]) return i;
    return 0;
}

int greaterValue(int n, int w) {
    int L = 1, R = min(w / 2, 9);
    while (L <= R) {
        int mid = L + R >> 1;
        for(int i = 2; i < n; i++) b[i] = 0;
        b[0] = b[1] = mid;
        playRound(b, r);
        int tmp = 0;
        for(int i = 0; i < 2; i++) if (r[i] > b[i]) tmp++;

        if (tmp == 2) L = mid + 1;
        else {
            if (tmp == 1) {
                if (r[0] > b[0]) return 0;
                return 1;
            }
            R = mid - 1;
        }
    }
    return 0;
}

void solve(vector<int> lst, int L, int R, int from, int to) {
    if (lst.size() == 1) {
        ans[lst[0]] = L;
        return;
    }
    int l = from, r = min(to, w / (int)lst.size());
    while (l <= r) {
        int mid = l + r >> 1;
        for(int i = 0; i < n; i++) b[i] = 0;
        for(int &j : lst) b[j] = mid;
        playRound(b, c);
        int tmp = 0;
        for(int &j : lst) tmp += (c[j] > b[j]);

        if (tmp == lst.size()) l = mid + 1;
        else {
            if (tmp > 0) {
                vector<int> v1, v2;
                for(int &j : lst) {
                    if (c[j] > b[j]) v1.push_back(j);
                    else v2.push_back(j);
                }
                solve(v2, L, L + v2.size() - 1, from, mid);
                solve(v1, L + v2.size(), R, mid, to);
                return;
            }
            else r = mid - 1;
        }
    }
}

bool cmp(const int &x, const int &y) {
    for(int i = 0; i < n; i++) b[i] = 0;
    b[x] = w / 2; b[y] = w / 2;
    playRound(b, c);
    return c[x] <= b[x];
}

void MergeSort(vector<int> &v) {
    if (v.size() == 1) return;
    vector<int> L, R;
    for (int i = 0; i < (int) v.size() / 2; ++i) L.push_back(v[i]);
    for (int i = (int) v.size() / 2; i < (int) v.size(); ++i) R.push_back(v[i]);

    MergeSort(L); MergeSort(R);
    v.clear();
    int i = 0, j = 0;
    while (i < (int) L.size() || j < (int) R.size()) {
        if (i < (int) L.size() && j < (int) R.size()) {
            if (cmp(L[i], R[j])) v.push_back(L[i++]);
            else v.push_back(R[j++]);
        }
        else if (i < (int) L.size()) v.push_back(L[i++]);
        else v.push_back(R[j++]);
    }
}

void allValues(int _n, int W, int *P) {
    n = _n;
    w = W;
    if (W == 2 * n) {
        vector<int> v(n);
        iota(v.begin(), v.end(), 0);
        MergeSort(v);
        for(int i = 0; i < n; i++) P[v[i]] = i + 1;
    } else {
        vector<int> init;
        for(int i = 0; i < n; i++) init.push_back(i);
        solve(init, 1, n, 1, 9);
        for(int i = 0; i < n; i++) P[i] = ans[i];
    }
}

Compilation message

koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:36:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   36 |         int mid = L + R >> 1;
      |                   ~~^~~
koala.cpp: In function 'void solve(std::vector<int>, int, int, int, int)':
koala.cpp:62:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   62 |         int mid = l + r >> 1;
      |                   ~~^~~
koala.cpp:69:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |         if (tmp == lst.size()) l = mid + 1;
      |             ~~~~^~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 208 KB Output is correct
2 Correct 4 ms 208 KB Output is correct
3 Correct 5 ms 208 KB Output is correct
4 Correct 6 ms 324 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 208 KB Output is correct
2 Correct 14 ms 208 KB Output is correct
3 Correct 12 ms 208 KB Output is correct
4 Correct 12 ms 320 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 328 KB Output is correct
2 Correct 80 ms 316 KB Output is correct
3 Correct 64 ms 336 KB Output is correct
4 Correct 51 ms 328 KB Output is correct
5 Correct 50 ms 332 KB Output is correct
6 Correct 51 ms 328 KB Output is correct
7 Correct 49 ms 336 KB Output is correct
8 Correct 71 ms 332 KB Output is correct
9 Correct 56 ms 324 KB Output is correct
10 Correct 49 ms 332 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 320 KB Output is correct
2 Correct 29 ms 208 KB Output is correct
3 Correct 33 ms 312 KB Output is correct
4 Correct 37 ms 208 KB Output is correct
5 Correct 31 ms 208 KB Output is correct
6 Correct 29 ms 320 KB Output is correct
7 Correct 38 ms 208 KB Output is correct
8 Correct 30 ms 300 KB Output is correct
9 Correct 28 ms 320 KB Output is correct
10 Correct 29 ms 208 KB Output is correct
11 Correct 28 ms 320 KB Output is correct
12 Correct 19 ms 320 KB Output is correct
13 Correct 38 ms 300 KB Output is correct
14 Correct 26 ms 316 KB Output is correct
15 Correct 27 ms 316 KB Output is correct
16 Correct 26 ms 208 KB Output is correct
17 Correct 24 ms 324 KB Output is correct
18 Correct 26 ms 316 KB Output is correct
19 Correct 29 ms 208 KB Output is correct
20 Correct 32 ms 208 KB Output is correct

Subtask #5
0 / 53.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 208 KB Output isn't correct
2 Halted 0 ms 0 KB -