oj.uz

Submission #944336

# Submission time Handle Problem Language Result Execution time Memory
944336 2024-03-12T14:59:41 Z MilosMilutinovic Chameleon's Love (JOI20_chameleon) C++14
64 / 100
 54 ms 744 KB 
#include "chameleon.h"
#include<bits/stdc++.h>

#define pb push_back
#define fi first
#define se second
#define mp make_pair

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef long double ld;

template <typename T> bool chkmin(T &x,T y){return x>y?x=y,1:0;}
template <typename T> bool chkmax(T &x,T y){return x<y?x=y,1:0;}

ll readint(){
	ll x=0,f=1; char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
	return x*f;
}

namespace {
	int c[1005][1005],nxt[1005],dep[1005];
	vector<int> g[1005];
	bool done[1005];
}

void dfs(int x){
	if(dep[x]==-1) dep[x]=0;
	for(int y:g[x]){
		if(dep[y]!=-1){
			assert(dep[y]!=dep[x]);
			continue;
		}
		dep[y]=(dep[x]+1)%2;
		dfs(y);
	}
}

bool Ok(vector<int> v,int i){
	if(v.empty()) return false;
	v.pb(i);
	return Query(v)!=v.size();
}

void Solve(int n){
	for(int i=1;i<=2*n;i++){
		for(int j=1;j<=2*n;j++) dep[j]=-1;
		for(int j=1;j<i;j++) if(dep[j]==-1) dfs(j);
		vector<int> a,b;
		for(int j=1;j<i;j++) (dep[j]==0?a:b).pb(j);
		for(int iter=1;iter<=3;iter++){
			vector<int> na,nb;
			for(int x:a){
				bool ok=false;
				for(int y:g[i]) if(x==y) ok=true;
				if(!ok) na.pb(x);
			}
			for(int x:b){
				bool ok=false;
				for(int y:g[i]) if(x==y) ok=true;
				if(!ok) nb.pb(x);
			}
			a=na;
			b=nb;
			if(Ok(a,i)){
				int l=0,r=(int)a.size()-1,p=-1;
				while(l<=r){
					int mid=(l+r)/2;
					vector<int> qv(1,i);
					for(int j=0;j<=mid;j++) qv.pb(a[j]);
					if(Query(qv)!=(int)qv.size()) p=mid,r=mid-1;
					else l=mid+1;
				}
				if(p!=-1){
					g[i].pb(a[p]);
					g[a[p]].pb(i);
				}else a.clear();
			}
			if(Ok(b,i)){
				int l=0,r=(int)b.size()-1,p=-1;
				while(l<=r){
					int mid=(l+r)/2;
					vector<int> qv(1,i);
					for(int j=0;j<=mid;j++) qv.pb(b[j]);
					if(Query(qv)!=(int)qv.size()) p=mid,r=mid-1;
					else l=mid+1;
				}
				if(p!=-1){
					g[i].pb(b[p]);
					g[b[p]].pb(i);
				}else b.clear();
			}
		}
	}
	vector<pii> res;
	for(int i=1;i<=2*n;i++){
		sort(g[i].begin(),g[i].end());
		g[i].erase(unique(g[i].begin(),g[i].end()),g[i].end());
		int sz=(int)g[i].size();
		if(sz==3){
			for(int x=0;x<3;x++){
				vector<int> qv={i};
				for(int y=0;y<3;y++) if(y!=x) qv.pb(g[i][y]);
				if(Query(qv)==1){
					nxt[i]=g[i][x];
					break;
				}
			}
		}else{
			done[i]=true;
			res.pb(mp(min(i,g[i][0]),max(i,g[i][0])));
		}
	}
	for(int i=1;i<=2*n;i++){
		if(done[i]) continue;
		vector<int> cyc;
		cyc.pb(i);
		int ver=i;
		while(!done[ver]) cyc.pb(ver),done[ver]=true,ver=nxt[ver];
		for(int v:cyc){
			for(int x:g[v]){
				if(x!=nxt[v]&&nxt[x]!=v){
					res.pb(mp(min(v,x),max(v,x)));
				}
			}
		}
	}
	sort(res.begin(),res.end());
	res.erase(unique(res.begin(),res.end()),res.end());
	for(auto&p:res) Answer(p.fi,p.se);
}

Compilation message

chameleon.cpp: In function 'bool Ok(std::vector<int>, int)':
chameleon.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |  return Query(v)!=v.size();
      |         ~~~~~~~~^~~~~~~~~~
chameleon.cpp: At global scope:
chameleon.cpp:28:6: warning: '{anonymous}::c' defined but not used [-Wunused-variable]
   28 |  int c[1005][1005],nxt[1005],dep[1005];
      |      ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 29 ms 344 KB Output is correct
4 Correct 30 ms 344 KB Output is correct
5 Correct 29 ms 344 KB Output is correct
6 Correct 29 ms 344 KB Output is correct
7 Correct 29 ms 344 KB Output is correct
8 Correct 29 ms 344 KB Output is correct
9 Correct 29 ms 344 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 344 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 344 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 344 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 1 ms 344 KB Output is correct
18 Correct 1 ms 344 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 49 ms 344 KB Output is correct
4 Correct 50 ms 744 KB Output is correct
5 Correct 49 ms 344 KB Output is correct
6 Correct 54 ms 544 KB Output is correct
7 Correct 51 ms 536 KB Output is correct
8 Correct 49 ms 564 KB Output is correct
9 Correct 50 ms 580 KB Output is correct

Subtask #5
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 29 ms 344 KB Output is correct
4 Correct 30 ms 344 KB Output is correct
5 Correct 29 ms 344 KB Output is correct
6 Correct 29 ms 344 KB Output is correct
7 Correct 29 ms 344 KB Output is correct
8 Correct 29 ms 344 KB Output is correct
9 Correct 29 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 460 KB Output is correct
13 Correct 0 ms 344 KB Output is correct
14 Correct 0 ms 344 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 0 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 0 ms 344 KB Output is correct
29 Correct 0 ms 344 KB Output is correct
30 Correct 49 ms 344 KB Output is correct
31 Correct 50 ms 744 KB Output is correct
32 Correct 49 ms 344 KB Output is correct
33 Correct 54 ms 544 KB Output is correct
34 Correct 51 ms 536 KB Output is correct
35 Correct 49 ms 564 KB Output is correct
36 Correct 50 ms 580 KB Output is correct
37 Incorrect 47 ms 344 KB Wrong Answer [3]
38 Halted 0 ms 0 KB -