oj.uz

Submission #211921

# Submission time Handle Problem Language Result Execution time Memory
211921 2020-03-21T18:06:13 Z Benq Chameleon's Love (JOI20_chameleon) C++14
100 / 100
 76 ms 580 KB 
#include "chameleon.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef long double ld;
typedef double db; 
typedef string str; 

typedef pair<int,int> pi;
typedef pair<ll,ll> pl; 
typedef pair<db,db> pd; 

typedef vector<int> vi; 
typedef vector<ll> vl; 
typedef vector<db> vd; 
typedef vector<str> vs; 
typedef vector<pi> vpi;
typedef vector<pl> vpl; 
typedef vector<pd> vpd; 

#define mp make_pair 
#define f first
#define s second
#define sz(x) (int)x.size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend() 
#define rsz resize
#define ins insert 
#define ft front() 
#define bk back()
#define pf push_front 
#define pb push_back
#define eb emplace_back 
#define lb lower_bound 
#define ub upper_bound 

#define FOR(i,a,b) for (int i = (a); i < (b); ++i)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for (int i = (b)-1; i >= (a); --i)
#define R0F(i,a) ROF(i,0,a)
#define trav(a,x) for (auto& a: x)

const int MOD = 1e9+7; // 998244353;
const int MX = 2e5+5; 
const ll INF = 1e18; 
const ld PI = acos((ld)-1);
const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1}; 

template<class T> bool ckmin(T& a, const T& b) { 
	return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { 
	return a < b ? a = b, 1 : 0; } 
int pct(int x) { return __builtin_popcount(x); } 
int bit(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
int cdiv(int a, int b) { return a/b+!(a<0||a%b == 0); } // division of a by b rounded up, assumes b > 0 

// INPUT
template<class A> void re(complex<A>& c);
template<class A, class B> void re(pair<A,B>& p);
template<class A> void re(vector<A>& v);
template<class A, size_t SZ> void re(array<A,SZ>& a);

template<class T> void re(T& x) { cin >> x; }
void re(db& d) { str t; re(t); d = stod(t); }
void re(ld& d) { str t; re(t); d = stold(t); }
template<class H, class... T> void re(H& h, T&... t) { re(h); re(t...); }

template<class A> void re(complex<A>& c) { A a,b; re(a,b); c = {a,b}; }
template<class A, class B> void re(pair<A,B>& p) { re(p.f,p.s); }
template<class A> void re(vector<A>& x) { trav(a,x) re(a); }
template<class A, size_t SZ> void re(array<A,SZ>& x) { trav(a,x) re(a); }

// TO_STRING
#define ts to_string
template<class A, class B> str ts(pair<A,B> p);
template<class A> str ts(complex<A> c) { return ts(mp(c.real(),c.imag())); }
str ts(bool b) { return b ? "true" : "false"; }
str ts(char c) { str s = ""; s += c; return s; }
str ts(str s) { return s; }
str ts(const char* s) { return (str)s; }
str ts(vector<bool> v) { 
	bool fst = 1; str res = "{";
	F0R(i,sz(v)) {
		if (!fst) res += ", ";
		fst = 0; res += ts(v[i]);
	}
	res += "}"; return res;
}
template<size_t SZ> str ts(bitset<SZ> b) {
	str res = ""; F0R(i,SZ) res += char('0'+b[i]);
	return res; }
template<class T> str ts(T v) {
	bool fst = 1; str res = "{";
	for (const auto& x: v) {
		if (!fst) res += ", ";
		fst = 0; res += ts(x);
	}
	res += "}"; return res;
}
template<class A, class B> str ts(pair<A,B> p) {
	return "("+ts(p.f)+", "+ts(p.s)+")"; }

// OUTPUT
template<class A> void pr(A x) { cout << ts(x); }
template<class H, class... T> void pr(const H& h, const T&... t) { 
	pr(h); pr(t...); }
void ps() { pr("\n"); } // print w/ spaces
template<class H, class... T> void ps(const H& h, const T&... t) { 
	pr(h); if (sizeof...(t)) pr(" "); ps(t...); }

// DEBUG
void DBG() { cerr << "]" << endl; }
template<class H, class... T> void DBG(H h, T... t) {
	cerr << to_string(h); if (sizeof...(t)) cerr << ", ";
	DBG(t...); }

#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)

// FILE I/O
void setIn(string s) { freopen(s.c_str(),"r",stdin); }
void setOut(string s) { freopen(s.c_str(),"w",stdout); }
void unsyncIO() { ios_base::sync_with_stdio(0); cin.tie(0); }
void setIO(string s = "") {
	unsyncIO();
	// cin.exceptions(cin.failbit); 
	// throws exception when do smth illegal
	// ex. try to read letter into int
	if (sz(s)) { setIn(s+".in"), setOut(s+".out"); } // for USACO
}

mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); 

namespace {

int variable_example = 1;

}  // namespace

bool bad(vi v, int x) {
	v.pb(x);
	return Query(v) != sz(v);
}

void Solve(int N) {
	vi cand[2*N+1]; vi other(2*N+1), nex(2*N+1), pre(2*N+1);
	/*FOR(i,1,2*N+1) {
		vi v; FOR(j,1,2*N+1) if (j != i) v.pb(j);
		while (bad(v,i)) {
			int lo = 1, hi = sz(v);
			while (lo < hi) {
				int mid = (lo+hi)/2;
				if (bad(vi(begin(v),begin(v)+mid),i)) hi = mid;
				else lo = mid+1;
			}
			cand[i].pb(v[lo-1]);
			v = vi(begin(v)+lo,end(v));
		}
	}*/
	FOR(i,1,2*N+1) {
		vi col(i);
		function<void(int,int)> dfs = [&](int a, int b)  {
			if (col[a]) return;
			col[a] = b;
			trav(t,cand[a]) dfs(t,b^3);
		};
		vi tri[2];
		FOR(j,1,i) {
			if (!col[j]) dfs(j,1);
			tri[col[j]-1].pb(j);
		}
		F0R(j,2) {
			vi v = tri[j];
			while (bad(v,i)) {
				int lo = 1, hi = sz(v);
				while (lo < hi) {
					int mid = (lo+hi)/2;
					if (bad(vi(begin(v),begin(v)+mid),i)) hi = mid;
					else lo = mid+1;
				}
				int x = v[lo-1]; cand[i].pb(x), cand[x].pb(i);
				v = vi(begin(v)+lo,end(v));
			}
		}
	}
	FOR(i,1,2*N+1) {
		// dbg(i,cand[i]);
		assert(sz(cand[i]) == 1 || sz(cand[i]) == 3);
		if (sz(cand[i]) == 1) other[i] = cand[i][0];
		else {
			while (Query({i,cand[i][0],cand[i][1]}) != 1) 
				rotate(begin(cand[i]),begin(cand[i])+1,end(cand[i]));
			nex[i] = cand[i][2]; pre[cand[i][2]] = i;
		}
	}
	FOR(i,1,2*N+1) {
		if (!other[i]) 
			other[i] = cand[i][0]+cand[i][1]+cand[i][2]-nex[i]-pre[i];
		if (i < other[i]) Answer(i,other[i]);
	}

}

Compilation message

chameleon.cpp: In function 'void setIn(std::__cxx11::string)':
chameleon.cpp:121:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
 void setIn(string s) { freopen(s.c_str(),"r",stdin); }
                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
chameleon.cpp: In function 'void setOut(std::__cxx11::string)':
chameleon.cpp:122:32: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
 void setOut(string s) { freopen(s.c_str(),"w",stdout); }
                         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
chameleon.cpp: At global scope:
chameleon.cpp:136:5: warning: '{anonymous}::variable_example' defined but not used [-Wunused-variable]
 int variable_example = 1;
     ^~~~~~~~~~~~~~~~

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 52 ms 384 KB Output is correct
4 Correct 44 ms 464 KB Output is correct
5 Correct 45 ms 504 KB Output is correct
6 Correct 44 ms 484 KB Output is correct
7 Correct 50 ms 580 KB Output is correct
8 Correct 50 ms 384 KB Output is correct
9 Correct 45 ms 452 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 6 ms 384 KB Output is correct
11 Correct 6 ms 384 KB Output is correct
12 Correct 6 ms 360 KB Output is correct
13 Correct 6 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 6 ms 384 KB Output is correct
17 Correct 6 ms 384 KB Output is correct
18 Correct 6 ms 384 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 69 ms 516 KB Output is correct
4 Correct 69 ms 504 KB Output is correct
5 Correct 67 ms 504 KB Output is correct
6 Correct 76 ms 448 KB Output is correct
7 Correct 74 ms 504 KB Output is correct
8 Correct 71 ms 488 KB Output is correct
9 Correct 73 ms 504 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 52 ms 384 KB Output is correct
4 Correct 44 ms 464 KB Output is correct
5 Correct 45 ms 504 KB Output is correct
6 Correct 44 ms 484 KB Output is correct
7 Correct 50 ms 580 KB Output is correct
8 Correct 50 ms 384 KB Output is correct
9 Correct 45 ms 452 KB Output is correct
10 Correct 6 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 6 ms 384 KB Output is correct
20 Correct 6 ms 384 KB Output is correct
21 Correct 6 ms 360 KB Output is correct
22 Correct 6 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 6 ms 384 KB Output is correct
26 Correct 6 ms 384 KB Output is correct
27 Correct 6 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 69 ms 516 KB Output is correct
31 Correct 69 ms 504 KB Output is correct
32 Correct 67 ms 504 KB Output is correct
33 Correct 76 ms 448 KB Output is correct
34 Correct 74 ms 504 KB Output is correct
35 Correct 71 ms 488 KB Output is correct
36 Correct 73 ms 504 KB Output is correct
37 Correct 67 ms 432 KB Output is correct
38 Correct 44 ms 384 KB Output is correct
39 Correct 67 ms 516 KB Output is correct
40 Correct 71 ms 504 KB Output is correct
41 Correct 69 ms 500 KB Output is correct
42 Correct 46 ms 476 KB Output is correct
43 Correct 73 ms 504 KB Output is correct
44 Correct 68 ms 524 KB Output is correct
45 Correct 74 ms 504 KB Output is correct