oj.uz

Submission #113884

# Submission time Handle Problem Language Result Execution time Memory
113884 2019-05-29T03:17:19 Z Mamnoon_Siam Minerals (JOI19_minerals) C++17
100 / 100
 756 ms 5080 KB 
#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector")
#include "minerals.h"
#include <bits/stdc++.h>
using namespace std;

const int maxn = 45000;
int dp[maxn], opt[maxn];

mt19937 mrand(random_device{}());
int rnd(int x) { return mrand() % x; }
struct RNG {
	int operator () (int n) {
		return rnd(n);
	}
};

void solve(vector<int> u, vector<int> v, int f) {
	if(u.empty()) return;

	if(u.size() == 1) {
		Answer(u.back(), v.back());
		return;
	}
	int mid, last;
	if(f) {
		mid = u.size() - opt[u.size()];
		for(int i = mid; i < v.size(); i++) {
			last = Query(v[i]);
		}
	} else {
		mid = opt[u.size()];
		for(int i = 0; i < mid; i++) {
			last = Query(v[i]);
		}
	}
	vector<int> lu, lv(v.begin(), v.begin() + mid), ru, rv(v.begin() + mid, v.end());
	for(int i = 0; i < u.size(); i++) {
		if(lu.size() == lv.size()) {
			ru.emplace_back(u[i]);
		} else if(ru.size() == rv.size()) {
			lu.emplace_back(u[i]);
		} else {
			int rep = Query(u[i]);
			if(rep == last) {
				lu.emplace_back(u[i]);
			} else {
				ru.emplace_back(u[i]);
			}
			last = rep;
		}
	}
	solve(lu, lv, 1);
	solve(ru, rv, 0);
}

void split(vector<int> v) {
	vector<int> l, r;
	int last = -1;
	for(int i = 0; i < v.size(); i++) {
		if(r.size() == v.size() / 2) {
			l.emplace_back(v[i]);
			continue;
		}
		int rep = Query(v[i]);
		if(rep == last) {
			l.emplace_back(v[i]);
		} else {
			r.emplace_back(v[i]);
		} last = rep;
	}
	solve(l, r, 1);
}

void Solve(int N) {
	dp[1] = 0;
	for(int i = 2; i <= N; i++) {
		int mn = INT_MAX, tmp, arg, cmp = (i - 1) / 2 + 1;
		for(int j = 1; j < i; j++) {
			tmp = dp[j] + dp[i - j] + (j < cmp ? j : i - j);
			if(tmp < mn) {
				mn = tmp;
				arg = j;
			}
		}
		dp[i] = mn + i;
		opt[i] = arg;
	}
	vector<int> v(2 * N);
	iota(v.begin(), v.end(), 1);
	split(v);
}

Compilation message

minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, int)':
minerals.cpp:27:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i = mid; i < v.size(); i++) {
                    ~~^~~~~~~~~~
minerals.cpp:37:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < u.size(); i++) {
                 ~~^~~~~~~~~~
minerals.cpp: In function 'void split(std::vector<int>)':
minerals.cpp:59:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < v.size(); i++) {
                 ~~^~~~~~~~~~
minerals.cpp: In function 'void solve(std::vector<int>, std::vector<int>, int)':
minerals.cpp:44:4: warning: 'last' may be used uninitialized in this function [-Wmaybe-uninitialized]
    if(rep == last) {
    ^~
minerals.cpp: In function 'void Solve(int)':
minerals.cpp:86:10: warning: 'arg' may be used uninitialized in this function [-Wmaybe-uninitialized]
   opt[i] = arg;
   ~~~~~~~^~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct

Subtask #2
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 5 ms 512 KB Output is correct
3 Correct 12 ms 768 KB Output is correct
4 Correct 34 ms 1152 KB Output is correct
5 Correct 102 ms 1916 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct
15 Correct 581 ms 4640 KB Output is correct
16 Correct 589 ms 4700 KB Output is correct
17 Correct 582 ms 4388 KB Output is correct
18 Correct 576 ms 4280 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct
15 Correct 581 ms 4640 KB Output is correct
16 Correct 589 ms 4700 KB Output is correct
17 Correct 582 ms 4388 KB Output is correct
18 Correct 576 ms 4280 KB Output is correct
19 Correct 621 ms 4668 KB Output is correct
20 Correct 620 ms 4900 KB Output is correct
21 Correct 610 ms 4428 KB Output is correct
22 Correct 610 ms 4244 KB Output is correct

Subtask #6
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct
15 Correct 581 ms 4640 KB Output is correct
16 Correct 589 ms 4700 KB Output is correct
17 Correct 582 ms 4388 KB Output is correct
18 Correct 576 ms 4280 KB Output is correct
19 Correct 621 ms 4668 KB Output is correct
20 Correct 620 ms 4900 KB Output is correct
21 Correct 610 ms 4428 KB Output is correct
22 Correct 610 ms 4244 KB Output is correct
23 Correct 673 ms 4740 KB Output is correct
24 Correct 666 ms 4888 KB Output is correct
25 Correct 646 ms 4632 KB Output is correct
26 Correct 638 ms 4380 KB Output is correct

Subtask #7
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct
15 Correct 581 ms 4640 KB Output is correct
16 Correct 589 ms 4700 KB Output is correct
17 Correct 582 ms 4388 KB Output is correct
18 Correct 576 ms 4280 KB Output is correct
19 Correct 621 ms 4668 KB Output is correct
20 Correct 620 ms 4900 KB Output is correct
21 Correct 610 ms 4428 KB Output is correct
22 Correct 610 ms 4244 KB Output is correct
23 Correct 673 ms 4740 KB Output is correct
24 Correct 666 ms 4888 KB Output is correct
25 Correct 646 ms 4632 KB Output is correct
26 Correct 638 ms 4380 KB Output is correct
27 Correct 688 ms 4908 KB Output is correct
28 Correct 675 ms 5000 KB Output is correct
29 Correct 669 ms 4800 KB Output is correct
30 Correct 665 ms 4500 KB Output is correct

Subtask #8
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct
15 Correct 581 ms 4640 KB Output is correct
16 Correct 589 ms 4700 KB Output is correct
17 Correct 582 ms 4388 KB Output is correct
18 Correct 576 ms 4280 KB Output is correct
19 Correct 621 ms 4668 KB Output is correct
20 Correct 620 ms 4900 KB Output is correct
21 Correct 610 ms 4428 KB Output is correct
22 Correct 610 ms 4244 KB Output is correct
23 Correct 673 ms 4740 KB Output is correct
24 Correct 666 ms 4888 KB Output is correct
25 Correct 646 ms 4632 KB Output is correct
26 Correct 638 ms 4380 KB Output is correct
27 Correct 688 ms 4908 KB Output is correct
28 Correct 675 ms 5000 KB Output is correct
29 Correct 669 ms 4800 KB Output is correct
30 Correct 665 ms 4500 KB Output is correct
31 Correct 727 ms 4952 KB Output is correct
32 Correct 715 ms 4904 KB Output is correct
33 Correct 705 ms 4760 KB Output is correct
34 Correct 720 ms 4604 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 12 ms 768 KB Output is correct
8 Correct 34 ms 1152 KB Output is correct
9 Correct 102 ms 1916 KB Output is correct
10 Correct 3 ms 384 KB Output is correct
11 Correct 49 ms 1320 KB Output is correct
12 Correct 103 ms 1912 KB Output is correct
13 Correct 99 ms 2040 KB Output is correct
14 Correct 98 ms 2040 KB Output is correct
15 Correct 581 ms 4640 KB Output is correct
16 Correct 589 ms 4700 KB Output is correct
17 Correct 582 ms 4388 KB Output is correct
18 Correct 576 ms 4280 KB Output is correct
19 Correct 621 ms 4668 KB Output is correct
20 Correct 620 ms 4900 KB Output is correct
21 Correct 610 ms 4428 KB Output is correct
22 Correct 610 ms 4244 KB Output is correct
23 Correct 673 ms 4740 KB Output is correct
24 Correct 666 ms 4888 KB Output is correct
25 Correct 646 ms 4632 KB Output is correct
26 Correct 638 ms 4380 KB Output is correct
27 Correct 688 ms 4908 KB Output is correct
28 Correct 675 ms 5000 KB Output is correct
29 Correct 669 ms 4800 KB Output is correct
30 Correct 665 ms 4500 KB Output is correct
31 Correct 727 ms 4952 KB Output is correct
32 Correct 715 ms 4904 KB Output is correct
33 Correct 705 ms 4760 KB Output is correct
34 Correct 720 ms 4604 KB Output is correct
35 Correct 749 ms 5080 KB Output is correct
36 Correct 744 ms 4920 KB Output is correct
37 Correct 756 ms 4724 KB Output is correct
38 Correct 756 ms 4756 KB Output is correct