oj.uz

Submission #439555

# Submission time Handle Problem Language Result Execution time Memory
439555 2021-06-30T08:39:57 Z 8e7 Monster Game (JOI21_monster) C++17
100 / 100
 133 ms 2368 KB 
#include "monster.h"
#include <iostream>
#include <assert.h>
#include <algorithm>
#include <vector>
#include <utility>
#include <time.h>
#include <random>

#define maxn 1005
#define pii pair<int, int>
#define ff first
#define ss second
using namespace std;
void debug(){cout << endl;}
template<class T, class ... U> void debug(T a, U ... b){cout << a << " ";debug(b ...);}
template<class T> void pary(T l, T r) {
	while (l != r) cout << *l << " ", l++;
	cout << endl;
}
namespace {
	bool res[maxn][maxn];
	bool found[maxn][maxn];
	int num = 0, save = 0;
}  // namespace
bool que(int a, int b) {
	if (found[a][b]) return save++, res[a][b];
	bool ret = Query(a, b);
	found[a][b] = found[b][a] = 1;
	res[a][b] = ret, res[b][a] = ret ^ 1;
	num++;
	return ret;
}
void mergesort(vector<int> &v) {
	if (v.size() <= 1) {
		return;
	}
	vector<int> lef, rig;
	for (int i = 0;i < v.size();i++) {
		if (i < (v.size() / 2)) lef.push_back(v[i]);
		else rig.push_back(v[i]);
	}
	mergesort(lef), mergesort(rig);	
	vector<int> ret;
	int ind = 0;
	for (int i = 0;i < lef.size();i++) {
		while (ind < rig.size() && que(lef[i], rig[ind])) {
			ret.push_back(rig[ind]);
			ind++;
		}
		ret.push_back(lef[i]);
	}
	while (ind < rig.size()) ret.push_back(rig[ind++]);
	v = ret;
}

vector<int> Solve(int N) {
	vector<int> ret;
	vector<int> cand;
	for (int i = 0;i < N;i++) cand.push_back(i);
	mergesort(cand);
	//cout << num << endl;
	vector<pii> cur;
	bool done = 0;
	for (int i = N - 1;i >= 0;i--) {
		int loss = 0;	
		for (auto &j:cur) {
			if (que(cand[i], cand[j.ff])) j.ss++;
			else loss++;	
		}
		for (int j = cur.size() - 1;j >= 0;j--) {
			if (cur[j].ss > 1) {
				cur.erase(cur.begin() + j);		
			} else if (cur[j].ff > i + 4) {
				done = 1;
				break;
			}
		}
		if (done) break;
		if (loss < 2) cur.push_back({i, loss});
	}	
	//cout << num << " " << save << endl;
	assert(cur.size());
	int big;
	if (cur.size() == 1) big = cur[0].ff;
	else if (cur.size() == 2) {
		if (cur[0].ff == cur[1].ff + 1) big = cur[1].ff;
		else big = cur[0].ff;
	} else {
		big = cur[0].ff;
		for (int i = 0;i < 2;i++) {
			if (cur[i + 1].ff == cur[i].ff - 1) big = cur[i + 1].ff;
			else {
				break;
			}
		}
	}
	for (int i = big;i < N;i++) ret.push_back(cand[i]);
	int comp = N - 1;
	for (int i = big - 1;i >= 0;i--) {
		if (que(cand[i], cand[comp])) {
			for (int j = i;j < big;j++) ret.push_back(cand[j]);
			comp = big - 1, big = i;
		}
	}
	reverse(ret.begin(), ret.end());
	vector<int> a (N, 0);
	for (int i = 0;i < N;i++) a[ret[i]] = i;
	return a;
}
/*
5
3 1 4 2 0

8
7 3 4 2 1 5 6 0

10
0 2 8 3 9 4 6 7 5 1
*/

Compilation message

monster.cpp: In function 'void mergesort(std::vector<int>&)':
monster.cpp:39:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |  for (int i = 0;i < v.size();i++) {
      |                 ~~^~~~~~~~~~
monster.cpp:40:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |   if (i < (v.size() / 2)) lef.push_back(v[i]);
      |       ~~^~~~~~~~~~~~~~~~
monster.cpp:46:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |  for (int i = 0;i < lef.size();i++) {
      |                 ~~^~~~~~~~~~~~
monster.cpp:47:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |   while (ind < rig.size() && que(lef[i], rig[ind])) {
      |          ~~~~^~~~~~~~~~~~
monster.cpp:53:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  while (ind < rig.size()) ret.push_back(rig[ind++]);
      |         ~~~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 1 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 1 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 304 KB Output is correct
16 Correct 11 ms 584 KB Output is correct
17 Correct 14 ms 584 KB Output is correct
18 Correct 14 ms 624 KB Output is correct
19 Correct 13 ms 584 KB Output is correct
20 Correct 18 ms 584 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 2 ms 200 KB Output is correct
24 Correct 1 ms 200 KB Output is correct
25 Correct 2 ms 200 KB Output is correct
26 Correct 9 ms 584 KB Output is correct
27 Correct 1 ms 200 KB Output is correct
28 Correct 1 ms 200 KB Output is correct
29 Correct 1 ms 200 KB Output is correct
30 Correct 1 ms 200 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 11 ms 584 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 200 KB Output is correct
2 Correct 1 ms 200 KB Output is correct
3 Correct 1 ms 200 KB Output is correct
4 Correct 1 ms 200 KB Output is correct
5 Correct 1 ms 200 KB Output is correct
6 Correct 1 ms 200 KB Output is correct
7 Correct 1 ms 200 KB Output is correct
8 Correct 1 ms 200 KB Output is correct
9 Correct 1 ms 200 KB Output is correct
10 Correct 1 ms 200 KB Output is correct
11 Correct 1 ms 200 KB Output is correct
12 Correct 1 ms 200 KB Output is correct
13 Correct 1 ms 200 KB Output is correct
14 Correct 1 ms 200 KB Output is correct
15 Correct 1 ms 304 KB Output is correct
16 Correct 11 ms 584 KB Output is correct
17 Correct 14 ms 584 KB Output is correct
18 Correct 14 ms 624 KB Output is correct
19 Correct 13 ms 584 KB Output is correct
20 Correct 18 ms 584 KB Output is correct
21 Correct 1 ms 200 KB Output is correct
22 Correct 1 ms 200 KB Output is correct
23 Correct 2 ms 200 KB Output is correct
24 Correct 1 ms 200 KB Output is correct
25 Correct 2 ms 200 KB Output is correct
26 Correct 9 ms 584 KB Output is correct
27 Correct 1 ms 200 KB Output is correct
28 Correct 1 ms 200 KB Output is correct
29 Correct 1 ms 200 KB Output is correct
30 Correct 1 ms 200 KB Output is correct
31 Correct 1 ms 200 KB Output is correct
32 Correct 11 ms 584 KB Output is correct
33 Correct 76 ms 2368 KB Output is correct
34 Correct 86 ms 2148 KB Output is correct
35 Correct 86 ms 2240 KB Output is correct
36 Correct 109 ms 2264 KB Output is correct
37 Correct 94 ms 2332 KB Output is correct
38 Correct 89 ms 2240 KB Output is correct
39 Correct 88 ms 2240 KB Output is correct
40 Correct 95 ms 2264 KB Output is correct
41 Correct 88 ms 2268 KB Output is correct
42 Correct 90 ms 2260 KB Output is correct
43 Correct 54 ms 2268 KB Output is correct
44 Correct 64 ms 2264 KB Output is correct

Subtask #3
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 99 ms 2144 KB Output is correct
2 Correct 99 ms 2224 KB Output is correct
3 Correct 85 ms 2240 KB Output is correct
4 Correct 130 ms 2220 KB Output is correct
5 Correct 130 ms 2256 KB Output is correct
6 Correct 127 ms 2240 KB Output is correct
7 Correct 133 ms 2216 KB Output is correct
8 Correct 113 ms 2240 KB Output is correct
9 Correct 88 ms 2268 KB Output is correct
10 Correct 98 ms 2240 KB Output is correct
11 Correct 115 ms 2368 KB Output is correct
12 Correct 126 ms 2152 KB Output is correct
13 Correct 75 ms 2240 KB Output is correct
14 Correct 102 ms 2156 KB Output is correct
15 Correct 59 ms 2240 KB Output is correct
16 Correct 59 ms 2144 KB Output is correct
17 Correct 103 ms 2344 KB Output is correct
18 Correct 57 ms 2240 KB Output is correct