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Submission #723203

# Submission time Handle Problem Language Result Execution time Memory
723203 2023-04-13T10:38:17 Z nguyentunglam Koala Game (APIO17_koala) C++17
96 / 100
 60 ms 340 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) {
    if (lst.size() == 1) {
        ans[lst[0]] = L;
        return;
    }
    int l = 1, r = min(10, 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);
                solve(v1, L + v2.size(), R);
                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();
    while (L.size() || R.size()) {
        if (L.size() && R.size()) {
            if (cmp(L[0], R[0])) {
                v.push_back(L[0]);
                L.erase(L.begin());
            }
            else {
                v.push_back(R[0]);
                R.erase(R.begin());
            }
        }
        else if (L.size()) {
            v.push_back(L[0]);
            L.erase(L.begin());
        }
        else {
            v.push_back(R[0]);
            R.erase(R.begin());
        }
    }
}

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);
        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)':
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 316 KB Output is correct
3 Correct 4 ms 208 KB Output is correct
4 Correct 4 ms 208 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 320 KB Output is correct
2 Correct 14 ms 316 KB Output is correct
3 Correct 17 ms 208 KB Output is correct
4 Correct 13 ms 208 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 324 KB Output is correct
2 Correct 60 ms 336 KB Output is correct
3 Correct 52 ms 336 KB Output is correct
4 Correct 49 ms 340 KB Output is correct
5 Correct 49 ms 324 KB Output is correct
6 Correct 53 ms 328 KB Output is correct
7 Correct 60 ms 328 KB Output is correct
8 Correct 48 ms 328 KB Output is correct
9 Correct 51 ms 336 KB Output is correct
10 Correct 47 ms 320 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 208 KB Output is correct
2 Correct 29 ms 308 KB Output is correct
3 Correct 38 ms 208 KB Output is correct
4 Correct 41 ms 208 KB Output is correct
5 Correct 28 ms 208 KB Output is correct
6 Correct 30 ms 208 KB Output is correct
7 Correct 27 ms 316 KB Output is correct
8 Correct 27 ms 208 KB Output is correct
9 Correct 28 ms 320 KB Output is correct
10 Correct 33 ms 328 KB Output is correct
11 Correct 27 ms 312 KB Output is correct
12 Correct 18 ms 208 KB Output is correct
13 Correct 27 ms 208 KB Output is correct
14 Correct 27 ms 208 KB Output is correct
15 Correct 27 ms 308 KB Output is correct
16 Correct 25 ms 208 KB Output is correct
17 Correct 26 ms 208 KB Output is correct
18 Correct 34 ms 316 KB Output is correct
19 Correct 25 ms 320 KB Output is correct
20 Correct 32 ms 208 KB Output is correct

Subtask #5
49.0 / 53.0

# Verdict Execution time Memory Grader output
1 Partially correct 4 ms 208 KB Output is partially correct
2 Partially correct 4 ms 208 KB Output is partially correct
3 Partially correct 6 ms 208 KB Output is partially correct
4 Partially correct 4 ms 208 KB Output is partially correct
5 Partially correct 5 ms 208 KB Output is partially correct
6 Partially correct 4 ms 208 KB Output is partially correct
7 Partially correct 4 ms 208 KB Output is partially correct
8 Partially correct 5 ms 208 KB Output is partially correct
9 Partially correct 4 ms 208 KB Output is partially correct
10 Partially correct 5 ms 208 KB Output is partially correct
11 Partially correct 5 ms 208 KB Output is partially correct
12 Partially correct 4 ms 208 KB Output is partially correct
13 Partially correct 4 ms 320 KB Output is partially correct
14 Partially correct 4 ms 208 KB Output is partially correct
15 Partially correct 5 ms 208 KB Output is partially correct
16 Partially correct 4 ms 208 KB Output is partially correct
17 Partially correct 4 ms 208 KB Output is partially correct
18 Partially correct 4 ms 208 KB Output is partially correct
19 Partially correct 4 ms 208 KB Output is partially correct
20 Partially correct 4 ms 208 KB Output is partially correct
21 Partially correct 4 ms 208 KB Output is partially correct
22 Partially correct 4 ms 208 KB Output is partially correct
23 Partially correct 4 ms 208 KB Output is partially correct
24 Partially correct 4 ms 324 KB Output is partially correct
25 Partially correct 5 ms 208 KB Output is partially correct
26 Partially correct 4 ms 208 KB Output is partially correct
27 Partially correct 4 ms 208 KB Output is partially correct
28 Partially correct 5 ms 208 KB Output is partially correct
29 Partially correct 4 ms 208 KB Output is partially correct
30 Partially correct 4 ms 208 KB Output is partially correct
31 Partially correct 4 ms 324 KB Output is partially correct
32 Partially correct 4 ms 208 KB Output is partially correct
33 Partially correct 4 ms 208 KB Output is partially correct
34 Partially correct 4 ms 208 KB Output is partially correct
35 Partially correct 5 ms 208 KB Output is partially correct
36 Partially correct 4 ms 320 KB Output is partially correct
37 Partially correct 6 ms 208 KB Output is partially correct
38 Partially correct 4 ms 208 KB Output is partially correct
39 Partially correct 5 ms 320 KB Output is partially correct
40 Partially correct 4 ms 208 KB Output is partially correct