oj.uz

Submission #632661

# Submission time Handle Problem Language Result Execution time Memory
632661 2022-08-20T14:16:20 Z minhcool Monster Game (JOI21_monster) C++17
52 / 100
 199 ms 2048 KB 
#include "monster.h"
#include<bits/stdc++.h>
using namespace std;
 
//#define int long long
#define fi first
#define se second
#define pb push_back
//#define mp make_pair
#define foru(i, l, r) for(int i = l; i <= r; i++)
#define ford(i, r, l) for(int i = r; i >= l; i--)
 
typedef pair<int, int> ii;
typedef pair<ii, int> iii;
typedef pair<ii, ii> iiii;
 
const int N = 1e5 + 5;
 
const int oo = 1e18 + 7, mod = 1e9 + 7;
 
int n, a[N], b[N];
 
int cnt = 0;
 
vector<int> er(vector<int> a, int x){
	vector<int> b;
	for(auto it : a) if(it != x) b.pb(it);
	return b;
}
 
/*
int Query(int x, int y){
	cnt++;
	//cout << x << " " << y << " " << b[x] << b[y] << "\n";
	if(b[x] < (b[y] - 1)) return 0;
	if(b[x] == (b[y] + 1)) return 0;
	return 1;
}*/
 
map<ii, bool> mp;
 
 
int Querry(int x, int y){
	if(mp.find({x, y}) != mp.end()) return mp[{x, y}];
	int temp = Query(x, y);
	mp[{x, y}] = temp;
    mp[{y, x}] = 1 - temp;
    return temp;
}
 
//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rng(1);
 
int rnd(int l, int r){
	int temp = rng() % (r - l + 1);
	temp = (temp + (r - l + 1)) % (r - l + 1);
	return temp + l;
}
 
int deg[N];
 
void solve_brute(vector<int> x, int l, int r){
	if(!x.size()) return;
	assert(x.size() == (r - l + 1));
	if(x.size() == 1){
		a[x[0]] = l;
		return;
	}
	assert(x.size() != 3);
	for(int i = 0; i < x.size(); i++) deg[x[i]] = 0;
	for(int i = 0; i < x.size(); i++){
		for(int j = i + 1; j < x.size(); j++){
			Querry(x[i], x[j]);
			//cout << i << " " << j << " " << b[x[i]] << " " << b[x[j]] << " " << mp[{x[i], x[j]}] << "\n";
			if(mp[{x[i], x[j]}]) deg[x[i]]++;
			else deg[x[j]]++;
		}
	}
	if(x.size() == 2){
		if(!mp[{x[0], x[1]}]){
			a[x[0]] = r, a[x[1]] = l;
		}
		else{
			a[x[1]] = r, a[x[0]] = l;
		}
		return;
	}
	int mn0 = -1, mn1, mx0 = -1, mx1;
	//cout << x.size() << "\n";
	for(auto it : x){
		if(deg[it] >= 2 && deg[it] <= x.size() - 3){
			a[it] = l + deg[it];
		}
		if(deg[it] == 1){
			if(mn0 == -1) mn0 = it;
			else mn1 = it;
		}
		if(deg[it] == x.size() - 2){
			if(mx0 == -1) mx0 = it;
			else mx1 = it;
		}
		//cout << deg[it] << " ";
	}/*
	cout << "\n";
	for(auto it : x) cout << b[it] << " ";
	cout << "\n";
	cout << Querry(b[2], b[4]) << "\n";
	cout << mn0 << " " << mn1 << " " << mx0 << " " << mx1 << "\n";
	if(min({mn0, mn1, mx0, mx1}) < 0) exit(0);*/
	//cout << mn0 << " " << mn1 << "\n";
	if(mp[{mn0, mn1}]){
		a[mn0] = l; a[mn1] = l + 1;
	}
	else{
		a[mn0] = l + 1; a[mn1] = l;
	}
	if(mp[{mx0, mx1}]){
		a[mx0] = r - 1; a[mx1] = r;
	}
	else{
		a[mx0] = r; a[mx1] = r - 1;
	}
}
 
int med(int a, int b, int c){
	int cnt[3];
	cnt[0] = cnt[1] = cnt[2] = 0;
	if(Querry(a, b)) cnt[0]++; else cnt[1]++;
	if(Querry(a, c)) cnt[0]++; else cnt[2]++;
	if(cnt[0] == 1) return a;
	if(Querry(b, c)) cnt[1]++; else cnt[2]++;
	if(cnt[1] == 1) return b;
	else return c;
}
 
void solve(vector<int> x, int l, int r){
	//for(auto it : x) assert(b[it] >= l && b[it] <= r);
	shuffle(x.begin(), x.end(), default_random_engine(7405));
	if(x.size() <= 10){
		solve_brute(x, l, r);
		return;
	}
	int temp;
	int iter = 0;
	temp = -1;
	vector<int> can = x;
    can.resize((x.size() * 3) / 4);
	while(can.size() > 1){
		while(can.size() > 1 && (can.size() % 3)) can.pop_back();
		if(can.size() == 1) break;
		vector<int> can2;
		for(int i = 0; i < can.size(); i += 3){
			can2.pb(med(can[i], can[i + 1], can[i + 2]));
		}
		can = can2;
	}
	temp = can[0];
	//cout << l << " " << r << " " << b[temp] << "\n";
	//assert(b[temp] > (l + 1) && b[temp] < (r - 1));
	/*
	if(la.size() < 2){
		for(auto it : sm){
			int cnt = 0;
			for(auto it2 : sm) if(it != it2 && Querry(it, it2)) cnt++;
			if(cnt >= 4 && cnt <= 6){
				temp = it;
				break;
			}   
		}
	}*/
	//cout << l << " " << r << " " << temp << "\n";
		//if(cnt1 < 2 || cnt2 < 2) continue;
		//break;
	//cout << temp << "\n";
	vector<int> vc1, vc2;
	for(auto it : x){
		if(it == temp) continue;
		if(Query(temp, it)) vc1.pb(it);
		else vc2.pb(it);
	}
	while(vc1.size() == 1 || vc2.size() == 1){
		vc1.clear(), vc2.clear();
		temp = x[rnd(0, (int)x.size() - 1)];
		for(auto it : x){
			if(it == temp) continue;
			if(Query(temp, it)) vc1.pb(it);
			else vc2.pb(it);
		}
	}
	//cout << vc1.size() << " " << vc2.size() << "\n";
	//cout << temp << " " << l + vc1.size() << "\n";
	a[temp] = l + vc1.size();
	int w1 = vc1[0], w2 = vc2[0];
	for(auto it : vc1){
		if(it == w1) continue;
		if(Querry(it, w1)) w1 = it;
	}
	shuffle(vc2.begin(), vc2.end(), default_random_engine(2005));
	ii cans = {-1, -1};
	for(auto it : vc2){
		if(Querry(w1, it)){
			if(cans.fi == -1) cans.fi = it;
			else{
				cans.se = it;
				break;
			}
		}
		//if(it == w2) continue;
		//if(Querry(w2, it)) w2 = it;
	}
	w2 = (Querry(cans.fi, cans.se) ? cans.se : cans.fi);
	bool ck1 = 0, ck2 = 0;
	a[w1] = l + vc1.size() + 1;
	a[w2] = l + vc1.size() - 1;
	vc1 = er(vc1, w1);
	vc2 = er(vc2, w2);
	//vc1 = er(vc1, w1);
	//vc2 = er(vc2, w2);
	if(vc1.size() == 3) vc1.pb(w2);
	if(vc2.size() == 3) vc2.pb(w1);
	solve(vc1, l, l + vc1.size() - 1);
	solve(vc2, r - vc2.size() + 1, r);
}
 
/*
void solve(vector<int> x, int l, int r){
	if(x.size() <= 4){
		solve_brute(x, l, r);
		return;
	}
	int temp;
	vector<int> vc1, vc2;
	while(1){
		temp = x[rnd(0, x.size() - 1)];
		vc1.clear(), vc2.clear();
		for(auto it : x){
			if(it == temp) continue;
			if(!Query(it, temp)) vc1.pb(it);
			else vc2.pb(it);
		}
		assert(vc1.size() && vc2.size());
		if(vc1.size() == 1 || vc2.size() == 1) continue;
		if(vc1.size() == 4 || vc2.size() == 4) continue;
		break;
	}
	//cout << temp << " " << l + vc1.size() << "\n";
	a[temp] = l + vc1.size();
	int w1 = vc1[0], w2 = vc2[0];
	for(auto it : vc1){
		if(it == w1) continue;
		if(Query(it, w1)) w1 = it;
	}
	for(auto it : vc2){
		if(it == w2) continue;
		if(Query(w2, it)) w2 = it;
	}
	bool ck1 = 0, ck2 = 0;
	a[w1] = l + vc1.size() + 1;
	a[w2] = l + vc1.size() - 1;
	vc1 = er(vc1, w1);
	vc2 = er(vc2, w2);
	solve(vc1, l, l + vc1.size() - 1);
	solve(vc2, r - vc2.size() + 1, r);
}*/
 
vector<int> Solve(int _n){
	n = _n;
	vector<int> temp;
	for(int i = 0; i < n; i++) temp.pb(i);
	solve(temp, 0, n - 1);
	//solve_brute(temp, 0, n - 1);
	vector<int> temp2;
	for(int i = 0; i < n; i++) temp2.pb(a[i]);
	return temp2;
}
 /*
void process(int t){
	int n = 1000;
	for(int i = 0; i < n; i++) b[i] = i;
	shuffle(b, b + n, default_random_engine(rnd(1, 10000)));
	cnt = 0;
	//cout << "OK\n";
	Solve(n);
	cout << t << " " << cnt << "\n";
	//for(int i = 0; i < n; i++) cout << a[i] << " " << b[i] << "\n";
}
signed main(){
	ios_base::sync_with_stdio(0);
	int t;
	cin >> t;
	for(int i = 1; i <= t; i++){
		mp.clear();
		//cout << i << "\n";
		process(i);
	}
	//cout << fixed << setprecision(10) << (double)cnt / (double)t << "\n";
}*/

Compilation message

monster.cpp:19:21: warning: overflow in conversion from 'double' to 'int' changes value from '1.0e+18' to '2147483647' [-Woverflow]
   19 | const int oo = 1e18 + 7, mod = 1e9 + 7;
      |                ~~~~~^~~
In file included from /usr/include/c++/10/cassert:44,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:33,
                 from monster.cpp:2:
monster.cpp: In function 'void solve_brute(std::vector<int>, int, int)':
monster.cpp:64:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   64 |  assert(x.size() == (r - l + 1));
      |         ~~~~~~~~~^~~~~~~~~~~~~~
monster.cpp:70:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |  for(int i = 0; i < x.size(); i++) deg[x[i]] = 0;
      |                 ~~^~~~~~~~~~
monster.cpp:71:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   71 |  for(int i = 0; i < x.size(); i++){
      |                 ~~^~~~~~~~~~
monster.cpp:72:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |   for(int j = i + 1; j < x.size(); j++){
      |                      ~~^~~~~~~~~~
monster.cpp:91:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |   if(deg[it] >= 2 && deg[it] <= x.size() - 3){
      |                      ~~~~~~~~^~~~~~~~~~~~~~~
monster.cpp:98:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |   if(deg[it] == x.size() - 2){
      |      ~~~~~~~~^~~~~~~~~~~~~~~
monster.cpp: In function 'void solve(std::vector<int>, int, int)':
monster.cpp:152:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  152 |   for(int i = 0; i < can.size(); i += 3){
      |                  ~~^~~~~~~~~~~~
monster.cpp:144:6: warning: unused variable 'iter' [-Wunused-variable]
  144 |  int iter = 0;
      |      ^~~~
monster.cpp:212:7: warning: unused variable 'ck1' [-Wunused-variable]
  212 |  bool ck1 = 0, ck2 = 0;
      |       ^~~
monster.cpp:212:16: warning: unused variable 'ck2' [-Wunused-variable]
  212 |  bool ck1 = 0, ck2 = 0;
      |                ^~~
monster.cpp: In function 'void solve_brute(std::vector<int>, int, int)':
monster.cpp:121:22: warning: 'mx1' may be used uninitialized in this function [-Wmaybe-uninitialized]
  121 |   a[mx0] = r; a[mx1] = r - 1;
      |               ~~~~~~~^~~~~~~
monster.cpp:112:22: warning: 'mn1' may be used uninitialized in this function [-Wmaybe-uninitialized]
  112 |   a[mn0] = l; a[mn1] = l + 1;
      |               ~~~~~~~^~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 252 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 280 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 19 ms 444 KB Output is correct
17 Correct 22 ms 472 KB Output is correct
18 Correct 20 ms 436 KB Output is correct
19 Correct 22 ms 512 KB Output is correct
20 Correct 21 ms 416 KB Output is correct
21 Correct 0 ms 208 KB Output is correct
22 Correct 0 ms 208 KB Output is correct
23 Correct 1 ms 312 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 208 KB Output is correct
26 Correct 11 ms 512 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 0 ms 208 KB Output is correct
29 Correct 1 ms 208 KB Output is correct
30 Correct 0 ms 208 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 18 ms 500 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 252 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 208 KB Output is correct
4 Correct 1 ms 208 KB Output is correct
5 Correct 0 ms 208 KB Output is correct
6 Correct 0 ms 280 KB Output is correct
7 Correct 1 ms 208 KB Output is correct
8 Correct 1 ms 208 KB Output is correct
9 Correct 0 ms 208 KB Output is correct
10 Correct 1 ms 208 KB Output is correct
11 Correct 0 ms 208 KB Output is correct
12 Correct 1 ms 208 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 0 ms 208 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 19 ms 444 KB Output is correct
17 Correct 22 ms 472 KB Output is correct
18 Correct 20 ms 436 KB Output is correct
19 Correct 22 ms 512 KB Output is correct
20 Correct 21 ms 416 KB Output is correct
21 Correct 0 ms 208 KB Output is correct
22 Correct 0 ms 208 KB Output is correct
23 Correct 1 ms 312 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 208 KB Output is correct
26 Correct 11 ms 512 KB Output is correct
27 Correct 0 ms 208 KB Output is correct
28 Correct 0 ms 208 KB Output is correct
29 Correct 1 ms 208 KB Output is correct
30 Correct 0 ms 208 KB Output is correct
31 Correct 1 ms 208 KB Output is correct
32 Correct 18 ms 500 KB Output is correct
33 Correct 141 ms 2000 KB Output is correct
34 Correct 162 ms 1832 KB Output is correct
35 Correct 138 ms 1888 KB Output is correct
36 Correct 178 ms 1888 KB Output is correct
37 Correct 147 ms 1852 KB Output is correct
38 Correct 175 ms 1864 KB Output is correct
39 Correct 186 ms 1812 KB Output is correct
40 Correct 195 ms 1760 KB Output is correct
41 Correct 91 ms 1928 KB Output is correct
42 Correct 174 ms 1748 KB Output is correct
43 Correct 169 ms 1856 KB Output is correct
44 Correct 170 ms 1780 KB Output is correct

Subtask #3
27.0 / 75.0

# Verdict Execution time Memory Grader output
1 Partially correct 164 ms 1944 KB Partially correct
2 Partially correct 174 ms 1876 KB Partially correct
3 Partially correct 142 ms 1876 KB Partially correct
4 Partially correct 182 ms 1832 KB Partially correct
5 Partially correct 147 ms 1808 KB Partially correct
6 Partially correct 199 ms 1784 KB Partially correct
7 Partially correct 108 ms 1780 KB Partially correct
8 Partially correct 167 ms 1824 KB Partially correct
9 Partially correct 157 ms 1928 KB Partially correct
10 Partially correct 109 ms 1808 KB Partially correct
11 Partially correct 187 ms 1864 KB Partially correct
12 Partially correct 163 ms 1884 KB Partially correct
13 Partially correct 170 ms 1932 KB Partially correct
14 Partially correct 180 ms 1852 KB Partially correct
15 Partially correct 108 ms 1844 KB Partially correct
16 Partially correct 167 ms 1868 KB Partially correct
17 Partially correct 124 ms 1656 KB Partially correct
18 Partially correct 191 ms 2048 KB Partially correct