oj.uz

Submission #636553

# Submission time Handle Problem Language Result Execution time Memory
636553 2022-08-29T14:29:29 Z shmad Koala Game (APIO17_koala) C++17
100 / 100
 48 ms 452 KB 
#include <bits/stdc++.h>

#ifndef ONLINE_JUDGE
	#include "koala.h"
#endif

#define vt vector
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
#define ff first
#define ss second
#define dbg(x) cerr << #x << " = " << x << '\n'
#define bit(x, i) ((x) >> (i) & 1)

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vvt = vt< vt<int> >;

#ifdef ONLINE_JUDGE

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 a[100], b[100];

int minValue(int n, int w) {  
    fill(a, a + n, 0);
    a[0] = 1;
    playRound(a, b);
    for (int i = 1; i < n; i++) if (b[i] == 0) return i;
    return 0;
}

int maxValue (int n, int w) {
	vt<int> p(n);
	iota(all(p), 0ll);
	while (sz(p) != 1) {
		fill(a, a + n, 0);
		int x = w / sz(p);
		for (int i: p) a[i] = x;
		playRound(a, b);
		p.clear();
		for (int i = 0; i < n; i++) if (b[i] == x + 1) p.pb(i);
	}
    return p[0];
}

int greaterValue (int n, int w) {
	fill(a, a + n, 0);
	int l = 1, r = 13, ans = 0;
	while (l <= r) {
		int mid = l + r >> 1;
		fill(a, a + n, 0);
		a[0] = a[1] = mid;                                               
		playRound(a, b);
		if (b[0] != b[1]) return (b[0] < b[1]);
		if (b[0] > mid && b[1] > mid) ans = mid, l = mid + 1;
		else r = mid - 1;
	}
	a[0] = a[1] = ans;
	playRound(a, b);
	return (b[0] < b[1]);
}

bool comp (int i, int j, int n, int w) {
	fill(a, a + n, 0);
	a[i] = a[j] = w / 2;
	playRound(a, b);
	return (b[j] > w / 2);
}

vt<int> merge_sort (vt<int> &v, int n, int w) {
	if (sz(v) == 1) return v;
	vt<int> l, r;
	for (int i = 0; i < sz(v); i++) {
		if (i < sz(v) / 2) l.pb(v[i]);
		else r.pb(v[i]);
	}
	l = merge_sort(l, n, w);
	r = merge_sort(r, n, w);
	v.clear();
	int i = 0, j = 0;
	while (i < sz(l) && j < sz(r)) v.pb((comp(l[i], r[j], n, w) ? l[i++] : r[j++]));
	while (i < sz(l)) v.pb(l[i++]);
	while (j < sz(r)) v.pb(r[j++]);
	return v;
}

bool check (int x, int l, int r, int w) {
	int mx = r, mn = 1, cnt = r - l + 1;
	while (mx >= l) {
		int sum = 0;
		while (mn < l && sum <= mx && cnt <= x) {
		 	sum += mn;
		 	mn++;
		 	cnt++;
		}
		if (cnt <= x) break;
		cnt -= x + 1;
		mx--;
	}
	return (mx >= l && mx < r);
}

int get (int L, int R, int w) {
	for (int x = 1; x <= w / (R - L + 1); x++) {
		if (check(x, L, R, w)) return x;
	}
	return -1;
}

void solve (vt<int> &v, int l, int r, int n, int w, int *p) {
	if (l == r) {
    	p[v[0]] = l;
    	return;
    }
    int x = get(l, r, w);
    fill(a, a + n, 0);
    for (int i: v) a[i] = x;
    playRound(a, b);
    vt<int> L, R;
    for (int i: v) {
    	if (b[i] == x + 1) R.pb(i);
    	else L.pb(i);
    }
    solve(L, l, l + sz(L) - 1, n, w, p);
    solve(R, r - sz(R) + 1, r, n, w, p);
}

void allValues (int n, int w, int *p) {
    vt<int> v(n);
    iota(all(v), 0);	
    if (w == n * 2) {
        v = merge_sort(v, n, w);
    	for (int i = 0; i < n; i++) p[v[i]] = i + 1;
    	return;
    }
    solve(v, 1, n, n, w, p);
}

#ifdef ONLINE_JUDGE
static void runGame(int F) {
    int i;

    scanf("%d %d",&N,&W);
    for (i=0;i<N;++i) {
        scanf("%d",&P[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]);
        }
        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

koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:127:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  127 |   int mid = l + r >> 1;
      |             ~~^~~

Subtask #1
4.0 / 4.0

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

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 208 KB Output is correct
2 Correct 11 ms 208 KB Output is correct
3 Correct 16 ms 324 KB Output is correct
4 Correct 12 ms 208 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 336 KB Output is correct
2 Correct 43 ms 328 KB Output is correct
3 Correct 40 ms 336 KB Output is correct
4 Correct 37 ms 336 KB Output is correct
5 Correct 44 ms 336 KB Output is correct
6 Correct 42 ms 348 KB Output is correct
7 Correct 38 ms 328 KB Output is correct
8 Correct 48 ms 328 KB Output is correct
9 Correct 39 ms 332 KB Output is correct
10 Correct 40 ms 452 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 316 KB Output is correct
2 Correct 27 ms 208 KB Output is correct
3 Correct 28 ms 320 KB Output is correct
4 Correct 33 ms 320 KB Output is correct
5 Correct 29 ms 316 KB Output is correct
6 Correct 30 ms 208 KB Output is correct
7 Correct 28 ms 320 KB Output is correct
8 Correct 26 ms 320 KB Output is correct
9 Correct 27 ms 320 KB Output is correct
10 Correct 26 ms 320 KB Output is correct
11 Correct 26 ms 208 KB Output is correct
12 Correct 16 ms 208 KB Output is correct
13 Correct 28 ms 208 KB Output is correct
14 Correct 24 ms 320 KB Output is correct
15 Correct 26 ms 320 KB Output is correct
16 Correct 26 ms 208 KB Output is correct
17 Correct 24 ms 208 KB Output is correct
18 Correct 24 ms 208 KB Output is correct
19 Correct 25 ms 320 KB Output is correct
20 Correct 25 ms 316 KB Output is correct

Subtask #5
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 208 KB Output is correct
2 Correct 5 ms 208 KB Output is correct
3 Correct 3 ms 208 KB Output is correct
4 Correct 3 ms 208 KB Output is correct
5 Correct 3 ms 208 KB Output is correct
6 Correct 3 ms 208 KB Output is correct
7 Correct 3 ms 208 KB Output is correct
8 Correct 3 ms 208 KB Output is correct
9 Correct 3 ms 208 KB Output is correct
10 Correct 3 ms 208 KB Output is correct
11 Correct 3 ms 208 KB Output is correct
12 Correct 3 ms 208 KB Output is correct
13 Correct 3 ms 208 KB Output is correct
14 Correct 3 ms 316 KB Output is correct
15 Correct 3 ms 208 KB Output is correct
16 Correct 3 ms 208 KB Output is correct
17 Correct 3 ms 208 KB Output is correct
18 Correct 3 ms 208 KB Output is correct
19 Correct 3 ms 208 KB Output is correct
20 Correct 3 ms 208 KB Output is correct
21 Correct 4 ms 208 KB Output is correct
22 Correct 3 ms 208 KB Output is correct
23 Correct 5 ms 316 KB Output is correct
24 Correct 3 ms 208 KB Output is correct
25 Correct 3 ms 316 KB Output is correct
26 Correct 4 ms 208 KB Output is correct
27 Correct 3 ms 208 KB Output is correct
28 Correct 3 ms 208 KB Output is correct
29 Correct 3 ms 208 KB Output is correct
30 Correct 3 ms 208 KB Output is correct
31 Correct 3 ms 208 KB Output is correct
32 Correct 3 ms 208 KB Output is correct
33 Correct 3 ms 208 KB Output is correct
34 Correct 4 ms 208 KB Output is correct
35 Correct 4 ms 208 KB Output is correct
36 Correct 3 ms 208 KB Output is correct
37 Correct 3 ms 208 KB Output is correct
38 Correct 3 ms 208 KB Output is correct
39 Correct 3 ms 208 KB Output is correct
40 Correct 3 ms 208 KB Output is correct