oj.uz

Submission #552095

# Submission time Handle Problem Language Result Execution time Memory
552095 2022-04-22T11:50:12 Z i_am_noob Chameleon's Love (JOI20_chameleon) C++17
100 / 100
 50 ms 1612 KB 
#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast,unroll-loops")

#define ll long long
//#define int ll
#define ull unsigned ll
#define ld long double
#define rep(a) rep1(i,a)
#define rep1(i,a) rep2(i,0,a)
#define rep2(i,b,a) for(int i=(b); i<((int)(a)); i++)
#define rep3(i,b,a) for(int i=(b); i>=((int)(a)); i--)
#define chkmin(a,b) (a=min(a,b))
#define chkmax(a,b) (a=max(a,b))
#define all(a) a.begin(),a.end()
#define pii pair<int,int>
#define pb push_back
//#define inf 1010000000
#define inf 4000000000000000000
#define eps 1e-9
#define sz(a) ((int)a.size())
#define pow2(x) (1ll<<(x))
#define ceiling(a,b) (((a)+(b)-1)/(b))
#define print0(a) cout << (a) << ' '
#define ykh mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#ifdef i_am_noob
#define bug(...) cerr << "#" << __LINE__ << ' ' << #__VA_ARGS__ << "- ", _do(__VA_ARGS__)
template<typename T> void _do(T && x) {cerr << x << endl;}
template<typename T, typename ...S> void _do(T && x, S&&...y) {cerr << x << ", "; _do(y...);}
#else
#define bug(...) 777771449
#endif

namespace {

const int maxn=505;

vector<int> adj[maxn*2];
bool vis[maxn*2],de[maxn*2][maxn*2];
int used=0;

mt19937 rng(49);

vector<int> gen(vector<int>& vec, int l, int r){
	vector<int> res;
	rep2(i,l,r+1) res.pb(vec[i]);
	return res;
}

int query(vector<int> vec){
	used++;
	for(auto& i: vec) i++;
	return Query(vec);
}

bool good(vector<int> vec){
	return query(vec)==sz(vec);
}

}  // namespace

void Solve(signed n) {
	vector<int> ord;
	set<pii> st;
	rep1(_,20){
		int need=0;
		rep(2*n) rep1(j,i) if(sz(adj[i])<3&&sz(adj[j])<3&&!de[i][j]) need++;
		if(need<=18000-used) break;
		ord.clear();
		rep(2*n){
			bool flag=0;
			rep1(j,2*n) if(i!=j&&!de[i][j]) flag=1;
			if(flag&&sz(adj[i])<3) ord.pb(i);
		}
		shuffle(all(ord),rng);
		vector<int> vec;
		memset(vis,0,sizeof vis);
		for(auto i: ord){
			bool flag=1;
			for(auto j: adj[i]) if(vis[j]) flag=0;
			if(!flag) continue;
			for(auto j: vec) de[i][j]=de[j][i]=1;
			int l=0;
			flag=1;
			while(1){
				vector<int> tmp=gen(vec,l,sz(vec)-1);
				tmp.pb(i);
				if(good(tmp)) break;
				int r=sz(vec)-1;
				while(l<r){
					int mid=l+r>>1;
					tmp=gen(vec,l,mid);
					tmp.pb(i);
					if(good(tmp)) l=mid+1;
					else r=mid;
				}
				adj[vec[l]].pb(i),adj[i].pb(vec[l]);
				st.insert({min(i,vec[l]),max(i,vec[l])});
				l++;
				flag=0;
				if(l>=sz(vec)) break;
			}
			if(flag) vec.pb(i),vis[i]=1;
		}
	}
	rep(2*n) rep1(j,i) if(sz(adj[i])<3&&sz(adj[j])<3&&!de[i][j]){
		if(query({i,j})==1){
			adj[i].pb(j),adj[j].pb(i);
			st.insert({min(i,j),max(i,j)});
		}
	}
	for(auto [x,y]: st) bug(x,y);
	rep(2*n) bug(i,sz(adj[i]));
	rep(2*n) assert(sz(adj[i])==1||sz(adj[i])==3);
	rep(2*n) if(sz(adj[i])==3){
		if(query({i,adj[i][0],adj[i][1]})==1) st.erase({min(i,adj[i][2]),max(i,adj[i][2])}),bug(min(i,adj[i][2]),max(i,adj[i][2]));
		else if(query({i,adj[i][0],adj[i][2]})==1) st.erase({min(i,adj[i][1]),max(i,adj[i][1])}),bug(min(i,adj[i][1]),max(i,adj[i][1]));
		else st.erase({min(i,adj[i][0]),max(i,adj[i][0])}),bug(min(i,adj[i][0]),max(i,adj[i][0]));
	}
	//assert(sz(st)==n);
	for(auto [x,y]: st) Answer(x+1,y+1);
}

Compilation message

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:92:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   92 |      int mid=l+r>>1;
      |              ~^~
chameleon.cpp:32:18: warning: statement has no effect [-Wunused-value]
   32 | #define bug(...) 777771449
      |                  ^~~~~~~~~
chameleon.cpp:113:22: note: in expansion of macro 'bug'
  113 |  for(auto [x,y]: st) bug(x,y);
      |                      ^~~
chameleon.cpp:113:11: warning: structured binding declaration set but not used [-Wunused-but-set-variable]
  113 |  for(auto [x,y]: st) bug(x,y);
      |           ^~~~~
chameleon.cpp:32:18: warning: statement has no effect [-Wunused-value]
   32 | #define bug(...) 777771449
      |                  ^~~~~~~~~
chameleon.cpp:114:11: note: in expansion of macro 'bug'
  114 |  rep(2*n) bug(i,sz(adj[i]));
      |           ^~~
chameleon.cpp:117:125: warning: right operand of comma operator has no effect [-Wunused-value]
  117 |   if(query({i,adj[i][0],adj[i][1]})==1) st.erase({min(i,adj[i][2]),max(i,adj[i][2])}),bug(min(i,adj[i][2]),max(i,adj[i][2]));
      |                                                                                                                             ^
chameleon.cpp:118:130: warning: right operand of comma operator has no effect [-Wunused-value]
  118 |   else if(query({i,adj[i][0],adj[i][2]})==1) st.erase({min(i,adj[i][1]),max(i,adj[i][1])}),bug(min(i,adj[i][1]),max(i,adj[i][1]));
      |                                                                                                                                  ^
chameleon.cpp:119:92: warning: right operand of comma operator has no effect [-Wunused-value]
  119 |   else st.erase({min(i,adj[i][0]),max(i,adj[i][0])}),bug(min(i,adj[i][0]),max(i,adj[i][0]));
      |                                                                                            ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 45 ms 1448 KB Output is correct
4 Correct 46 ms 1460 KB Output is correct
5 Correct 47 ms 1456 KB Output is correct
6 Correct 49 ms 1384 KB Output is correct
7 Correct 47 ms 1360 KB Output is correct
8 Correct 48 ms 1468 KB Output is correct
9 Correct 50 ms 1476 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 0 ms 336 KB Output is correct
5 Correct 0 ms 336 KB Output is correct
6 Correct 0 ms 336 KB Output is correct
7 Correct 0 ms 336 KB Output is correct
8 Correct 0 ms 336 KB Output is correct
9 Correct 0 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 2 ms 356 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 45 ms 1612 KB Output is correct
4 Correct 40 ms 1460 KB Output is correct
5 Correct 43 ms 1468 KB Output is correct
6 Correct 37 ms 1492 KB Output is correct
7 Correct 44 ms 1428 KB Output is correct
8 Correct 38 ms 1492 KB Output is correct
9 Correct 38 ms 1452 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 336 KB Output is correct
2 Correct 0 ms 336 KB Output is correct
3 Correct 45 ms 1448 KB Output is correct
4 Correct 46 ms 1460 KB Output is correct
5 Correct 47 ms 1456 KB Output is correct
6 Correct 49 ms 1384 KB Output is correct
7 Correct 47 ms 1360 KB Output is correct
8 Correct 48 ms 1468 KB Output is correct
9 Correct 50 ms 1476 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 0 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 0 ms 336 KB Output is correct
14 Correct 0 ms 336 KB Output is correct
15 Correct 0 ms 336 KB Output is correct
16 Correct 0 ms 336 KB Output is correct
17 Correct 0 ms 336 KB Output is correct
18 Correct 0 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 2 ms 356 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 0 ms 336 KB Output is correct
29 Correct 0 ms 336 KB Output is correct
30 Correct 45 ms 1612 KB Output is correct
31 Correct 40 ms 1460 KB Output is correct
32 Correct 43 ms 1468 KB Output is correct
33 Correct 37 ms 1492 KB Output is correct
34 Correct 44 ms 1428 KB Output is correct
35 Correct 38 ms 1492 KB Output is correct
36 Correct 38 ms 1452 KB Output is correct
37 Correct 41 ms 1400 KB Output is correct
38 Correct 49 ms 1468 KB Output is correct
39 Correct 41 ms 1412 KB Output is correct
40 Correct 40 ms 1492 KB Output is correct
41 Correct 35 ms 1488 KB Output is correct
42 Correct 45 ms 1360 KB Output is correct
43 Correct 38 ms 1488 KB Output is correct
44 Correct 40 ms 1480 KB Output is correct
45 Correct 39 ms 1464 KB Output is correct