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답안 #632640

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
632640 2022-08-20T13:43:44 Z minhcool Monster Game (JOI21_monster) C++17
40 / 100
 240 ms 1424 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;
    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;
	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;
	}
	for(auto it : vc2){
		if(it == w2) continue;
		if(Querry(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);
	//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:62:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   62 |  assert(x.size() == (r - l + 1));
      |         ~~~~~~~~~^~~~~~~~~~~~~~
monster.cpp:68:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   68 |  for(int i = 0; i < x.size(); i++) deg[x[i]] = 0;
      |                 ~~^~~~~~~~~~
monster.cpp:69:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |  for(int i = 0; i < x.size(); i++){
      |                 ~~^~~~~~~~~~
monster.cpp:70:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   70 |   for(int j = i + 1; j < x.size(); j++){
      |                      ~~^~~~~~~~~~
monster.cpp:89:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |   if(deg[it] >= 2 && deg[it] <= x.size() - 3){
      |                      ~~~~~~~~^~~~~~~~~~~~~~~
monster.cpp:96:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |   if(deg[it] == x.size() - 2){
      |      ~~~~~~~~^~~~~~~~~~~~~~~
monster.cpp: In function 'void solve(std::vector<int>, int, int)':
monster.cpp:149:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  149 |   for(int i = 0; i < can.size(); i += 3){
      |                  ~~^~~~~~~~~~~~
monster.cpp:142:6: warning: unused variable 'iter' [-Wunused-variable]
  142 |  int iter = 0;
      |      ^~~~
monster.cpp:199:7: warning: unused variable 'ck1' [-Wunused-variable]
  199 |  bool ck1 = 0, ck2 = 0;
      |       ^~~
monster.cpp:199:16: warning: unused variable 'ck2' [-Wunused-variable]
  199 |  bool ck1 = 0, ck2 = 0;
      |                ^~~
monster.cpp: In function 'void solve_brute(std::vector<int>, int, int)':
monster.cpp:119:22: warning: 'mx1' may be used uninitialized in this function [-Wmaybe-uninitialized]
  119 |   a[mx0] = r; a[mx1] = r - 1;
      |               ~~~~~~~^~~~~~~
monster.cpp:110:22: warning: 'mn1' may be used uninitialized in this function [-Wmaybe-uninitialized]
  110 |   a[mn0] = l; a[mn1] = l + 1;
      |               ~~~~~~~^~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 316 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 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 1 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 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 25 ms 348 KB Output is correct
17 Correct 26 ms 464 KB Output is correct
18 Correct 19 ms 364 KB Output is correct
19 Correct 14 ms 436 KB Output is correct
20 Correct 33 ms 392 KB Output is correct
21 Correct 0 ms 208 KB Output is correct
22 Correct 0 ms 208 KB Output is correct
23 Correct 0 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 24 ms 368 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 24 ms 344 KB Output is correct

Subtask #2
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 316 KB Output is correct
2 Correct 1 ms 208 KB Output is correct
3 Correct 1 ms 208 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 0 ms 208 KB Output is correct
7 Correct 0 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 1 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 1 ms 208 KB Output is correct
15 Correct 1 ms 208 KB Output is correct
16 Correct 25 ms 348 KB Output is correct
17 Correct 26 ms 464 KB Output is correct
18 Correct 19 ms 364 KB Output is correct
19 Correct 14 ms 436 KB Output is correct
20 Correct 33 ms 392 KB Output is correct
21 Correct 0 ms 208 KB Output is correct
22 Correct 0 ms 208 KB Output is correct
23 Correct 0 ms 208 KB Output is correct
24 Correct 1 ms 208 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 24 ms 368 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 24 ms 344 KB Output is correct
33 Correct 240 ms 1196 KB Output is correct
34 Correct 211 ms 1424 KB Output is correct
35 Correct 187 ms 1376 KB Output is correct
36 Correct 200 ms 1280 KB Output is correct
37 Correct 185 ms 1288 KB Output is correct
38 Correct 213 ms 1312 KB Output is correct
39 Correct 106 ms 1200 KB Output is correct
40 Correct 167 ms 1284 KB Output is correct
41 Correct 193 ms 1360 KB Output is correct
42 Correct 181 ms 1252 KB Output is correct
43 Correct 174 ms 1328 KB Output is correct
44 Correct 132 ms 1316 KB Output is correct

Subtask #3
15.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Partially correct 187 ms 1424 KB Partially correct
2 Partially correct 141 ms 1268 KB Partially correct
3 Partially correct 209 ms 1284 KB Partially correct
4 Partially correct 124 ms 1392 KB Partially correct
5 Partially correct 199 ms 1244 KB Partially correct
6 Partially correct 168 ms 1396 KB Partially correct
7 Partially correct 195 ms 1164 KB Partially correct
8 Partially correct 163 ms 1312 KB Partially correct
9 Partially correct 157 ms 1252 KB Partially correct
10 Partially correct 208 ms 1368 KB Partially correct
11 Partially correct 206 ms 1304 KB Partially correct
12 Partially correct 182 ms 1288 KB Partially correct
13 Partially correct 180 ms 1204 KB Partially correct
14 Partially correct 226 ms 1196 KB Partially correct
15 Partially correct 182 ms 1332 KB Partially correct
16 Partially correct 228 ms 1228 KB Partially correct
17 Partially correct 166 ms 1348 KB Partially correct
18 Partially correct 186 ms 1260 KB Partially correct