답안 #300252

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
300252 2020-09-17T03:15:08 Z Benq 슈퍼트리 잇기 (IOI20_supertrees) C++14
100 / 100
274 ms 26204 KB
#include "supertrees.h"
#include <vector>

#include <bits/stdc++.h>
using namespace std;
 
using ll = long long;
using ld = long double;
using db = double; 
using str = string; // yay python!

using pi = pair<int,int>;
using pl = pair<ll,ll>;
using pd = pair<db,db>;

using vi = vector<int>;
using vb = vector<bool>;
using vl = vector<ll>;
using vd = vector<db>; 
using vs = vector<str>;
using vpi = vector<pi>;
using vpl = vector<pl>; 
using vpd = vector<pd>;

#define tcT template<class T
// ^ lol this makes everything look weird but I'll try it
tcT> using V = vector<T>; 
tcT, size_t SZ> using AR = array<T,SZ>; 

// pairs
#define mp make_pair
#define f first
#define s second

// vectors
#define sz(x) (int)(x).size()
#define all(x) begin(x), end(x)
#define rall(x) (x).rbegin(), (x).rend() 
#define sor(x) sort(all(x)) 
#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 

// loops
#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; // not too close to LLONG_MAX
const ld PI = acos((ld)-1);
const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1}; // for every grid problem!!
mt19937 rng((uint32_t)chrono::steady_clock::now().time_since_epoch().count()); 

// helper funcs
constexpr int pct(int x) { return __builtin_popcount(x); } // # of bits set
constexpr int bits(int x) { return 31-__builtin_clz(x); } // floor(log2(x)) 
ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); } // divide a by b rounded up
ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } // divide a by b rounded down

tcT> bool ckmin(T& a, const T& b) {
	return b < a ? a = b, 1 : 0; } // set a = min(a,b)
tcT> bool ckmax(T& a, const T& b) {
	return a < b ? a = b, 1 : 0; }

#define tcTU tcT, class U
tcTU> T fstTrue(T lo, T hi, U f) {
	hi ++; assert(lo <= hi); // assuming f is increasing
	while (lo < hi) { // find first index such that f is true 
		T mid = lo+(hi-lo)/2;
		f(mid) ? hi = mid : lo = mid+1; 
	} 
	return lo;
}
tcTU> T lstTrue(T lo, T hi, U f) {
	lo --; assert(lo <= hi); // assuming f is decreasing
	while (lo < hi) { // find first index such that f is true 
		T mid = lo+(hi-lo+1)/2;
		f(mid) ? lo = mid : hi = mid-1;
	} 
	return lo;
}
tcT> void remDup(vector<T>& v) { // sort and remove duplicates
	sort(all(v)); v.erase(unique(all(v)),end(v)); }
tcTU> void erase(T& t, const U& u) { // don't erase
	auto it = t.find(u); assert(it != end(t));
	t.erase(u); } // element that doesn't exist from (multi)set

// INPUT
#define tcTUU tcT, class ...U
tcT> void re(complex<T>& c);
tcTU> void re(pair<T,U>& p);
tcT> void re(vector<T>& v);
tcT, size_t SZ> void re(AR<T,SZ>& a);

tcT> 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); }
tcTUU> void re(T& t, U&... u) { re(t); re(u...); }

tcT> void re(complex<T>& c) { T a,b; re(a,b); c = {a,b}; }
tcTU> void re(pair<T,U>& p) { re(p.f,p.s); }
tcT> void re(vector<T>& x) { trav(a,x) re(a); }
tcT, size_t SZ> void re(AR<T,SZ>& x) { trav(a,x) re(a); }

// TO_STRING
#define ts to_string
str ts(char c) { return str(1,c); }
str ts(const char* s) { return (str)s; }
str ts(str s) { return s; }
str ts(bool b) { 
	#ifdef LOCAL
		return b ? "true" : "false"; 
	#else 
		return ts((int)b);
	#endif
}
tcT> str ts(complex<T> c) { 
	stringstream ss; ss << c; return ss.str(); }
str ts(vector<bool> v) {
	str res = "{"; F0R(i,sz(v)) res += char('0'+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; }
tcTU> str ts(pair<T,U> p);
tcT> str ts(T v) { // containers with begin(), end()
	#ifdef LOCAL
		bool fst = 1; str res = "{";
		for (const auto& x: v) {
			if (!fst) res += ", ";
			fst = 0; res += ts(x);
		}
		res += "}"; return res;
	#else
		bool fst = 1; str res = "";
		for (const auto& x: v) {
			if (!fst) res += " ";
			fst = 0; res += ts(x);
		}
		return res;

	#endif
}
tcTU> str ts(pair<T,U> p) {
	#ifdef LOCAL
		return "("+ts(p.f)+", "+ts(p.s)+")"; 
	#else
		return ts(p.f)+" "+ts(p.s);
	#endif
}

// OUTPUT
tcT> void pr(T x) { cout << ts(x); }
tcTUU> void pr(const T& t, const U&... u) { 
	pr(t); pr(u...); }
void ps() { pr("\n"); } // print w/ spaces
tcTUU> void ps(const T& t, const U&... u) { 
	pr(t); if (sizeof...(u)) pr(" "); ps(u...); }

// DEBUG
void DBG() { cerr << "]" << endl; }
tcTUU> void DBG(const T& t, const U&... u) {
	cerr << ts(t); if (sizeof...(u)) cerr << ", ";
	DBG(u...); }
#ifdef LOCAL // compile with -DLOCAL, chk -> fake assert
	#define dbg(...) cerr << "Line(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
	#define chk(...) if (!(__VA_ARGS__)) cerr << "Line(" << __LINE__ << ") -> function(" \
		 << __FUNCTION__  << ") -> CHK FAILED: (" << #__VA_ARGS__ << ")" << "\n", exit(0);
#else
	#define dbg(...) 0
	#define chk(...) 0
#endif

// FILE I/O
void setIn(str s) { freopen(s.c_str(),"r",stdin); }
void setOut(str s) { freopen(s.c_str(),"w",stdout); }
void unsyncIO() { cin.tie(0)->sync_with_stdio(0); }
void setIO(str 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
}

/**
 * Description: Disjoint Set Union with path compression
 	* and union by size. Add edges and test connectivity. 
 	* Use for Kruskal's or Boruvka's minimum spanning tree.
 * Time: O(\alpha(N))
 * Source: CSAcademy, KACTL
 * Verification: *
 */

struct DSU {
	vi e; void init(int N) { e = vi(N,-1); }
	int get(int x) { return e[x] < 0 ? x : e[x] = get(e[x]); } 
	bool sameSet(int a, int b) { return get(a) == get(b); }
	int size(int x) { return -e[get(x)]; }
	bool unite(int x, int y) { // union by size
		x = get(x), y = get(y); if (x == y) return 0;
		if (e[x] > e[y]) swap(x,y);
		e[x] += e[y]; e[y] = x; return 1;
	}
};

/**template<class T> T kruskal(int N, vector<pair<T,pi>> ed) {
	sort(all(ed));
	T ans = 0; DSU D; D.init(N); // edges that unite are in MST
	trav(a,ed) if (D.unite(a.s.f,a.s.s)) ans += a.f; 
	return ans;
}*/

std::vector<std::vector<int>> p;
std::vector<std::vector<int>> b;
vb vis;

vi cur;
int n;

void dfs(int x) {
	if (vis[x]) return;
	vis[x] = 1;
	F0R(i,n) if (p[x][i]) dfs(i);
	cur.pb(x);
}

DSU D;

void ae(int x, int y) {
	assert(x != y && !b[x][y]);
	b[x][y] = b[y][x] = 1;
}

bool go(int x) {
	cur.clear();
	dfs(x);
	trav(a,cur) trav(b,cur) if (!p[a][b]) return 0;
	vi cyc;
	trav(a,cur) if (D.get(a) == a) {
		cyc.pb(a);
		vi comp; F0R(i,n) if (D.get(i) == a) comp.pb(i);
		trav(x,comp) trav(y,comp) if (p[x][y] != 1) return 0;
		FOR(j,1,sz(comp)) ae(comp[0],comp[j]);
	}
	assert(sz(cyc));
	if (sz(cyc) == 2) return 0;
	if (sz(cyc) == 1) return 1;
	F0R(i,sz(cyc)) ae(cyc[i],cyc[(i+1)%sz(cyc)]);
	return 1;
}

int construct(std::vector<std::vector<int>> _p) {
	p = _p;
	n = p.size(); vis.rsz(n);
	F0R(i,n) F0R(j,n) if (p[i][j] == 3) return 0;
	D.init(n);
	F0R(i,n) F0R(j,n) if (p[i][j] == 1) D.unite(i,j);
	b = vector<std::vector<int>>(n,vi(n));
	F0R(i,n) if (!vis[i]) {
		if (!go(i)) return 0;
	}
	build(b);
	return 1;
	// std::vector<std::vector<int>> answer;
	// for (int i = 0; i < n; i++) {
	// 	std::vector<int> row;
	// 	row.resize(n);
	// 	answer.push_back(row);
	// }
	// build(answer);
	return 1;
}

Compilation message

supertrees.cpp: In function 'void setIn(str)':
supertrees.cpp:185:28: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  185 | void setIn(str s) { freopen(s.c_str(),"r",stdin); }
      |                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~
supertrees.cpp: In function 'void setOut(str)':
supertrees.cpp:186:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  186 | void setOut(str s) { freopen(s.c_str(),"w",stdout); }
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 253 ms 26104 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 253 ms 26104 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 237 ms 26104 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 134 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 6776 KB Output is correct
21 Correct 252 ms 26104 KB Output is correct
22 Correct 249 ms 26104 KB Output is correct
23 Correct 257 ms 26104 KB Output is correct
24 Correct 245 ms 26076 KB Output is correct
25 Correct 121 ms 16120 KB Output is correct
26 Correct 111 ms 16120 KB Output is correct
27 Correct 274 ms 26164 KB Output is correct
28 Correct 257 ms 26204 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 15 ms 1408 KB Output is correct
9 Correct 249 ms 25976 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 11 ms 1408 KB Output is correct
13 Correct 253 ms 26104 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 128 ms 16248 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 62 ms 6776 KB Output is correct
22 Correct 241 ms 26104 KB Output is correct
23 Correct 242 ms 26104 KB Output is correct
24 Correct 256 ms 26104 KB Output is correct
25 Correct 112 ms 16120 KB Output is correct
26 Correct 114 ms 16120 KB Output is correct
27 Correct 245 ms 26104 KB Output is correct
28 Correct 253 ms 26104 KB Output is correct
29 Correct 113 ms 16120 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 63 ms 6776 KB Output is correct
5 Correct 242 ms 26104 KB Output is correct
6 Correct 247 ms 26104 KB Output is correct
7 Correct 258 ms 26104 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 63 ms 7032 KB Output is correct
10 Correct 249 ms 26104 KB Output is correct
11 Correct 242 ms 26104 KB Output is correct
12 Correct 262 ms 26104 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 65 ms 6776 KB Output is correct
17 Correct 251 ms 25980 KB Output is correct
18 Correct 246 ms 26104 KB Output is correct
19 Correct 244 ms 26104 KB Output is correct
20 Correct 249 ms 26104 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 253 ms 26104 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 237 ms 26104 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 134 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 6776 KB Output is correct
21 Correct 252 ms 26104 KB Output is correct
22 Correct 249 ms 26104 KB Output is correct
23 Correct 257 ms 26104 KB Output is correct
24 Correct 245 ms 26076 KB Output is correct
25 Correct 121 ms 16120 KB Output is correct
26 Correct 111 ms 16120 KB Output is correct
27 Correct 274 ms 26164 KB Output is correct
28 Correct 257 ms 26204 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 15 ms 1408 KB Output is correct
37 Correct 249 ms 25976 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 253 ms 26104 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 6 ms 1024 KB Output is correct
45 Correct 128 ms 16248 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 62 ms 6776 KB Output is correct
50 Correct 241 ms 26104 KB Output is correct
51 Correct 242 ms 26104 KB Output is correct
52 Correct 256 ms 26104 KB Output is correct
53 Correct 112 ms 16120 KB Output is correct
54 Correct 114 ms 16120 KB Output is correct
55 Correct 245 ms 26104 KB Output is correct
56 Correct 253 ms 26104 KB Output is correct
57 Correct 113 ms 16120 KB Output is correct
58 Correct 1 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 6 ms 1024 KB Output is correct
61 Correct 136 ms 16120 KB Output is correct
62 Correct 1 ms 256 KB Output is correct
63 Correct 1 ms 256 KB Output is correct
64 Correct 1 ms 256 KB Output is correct
65 Correct 60 ms 6776 KB Output is correct
66 Correct 116 ms 16252 KB Output is correct
67 Correct 113 ms 16120 KB Output is correct
68 Correct 117 ms 16120 KB Output is correct
69 Correct 109 ms 16248 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 11 ms 1408 KB Output is correct
7 Correct 253 ms 26104 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 1 ms 384 KB Output is correct
12 Correct 10 ms 1408 KB Output is correct
13 Correct 237 ms 26104 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 6 ms 1024 KB Output is correct
17 Correct 134 ms 16120 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 1 ms 256 KB Output is correct
20 Correct 61 ms 6776 KB Output is correct
21 Correct 252 ms 26104 KB Output is correct
22 Correct 249 ms 26104 KB Output is correct
23 Correct 257 ms 26104 KB Output is correct
24 Correct 245 ms 26076 KB Output is correct
25 Correct 121 ms 16120 KB Output is correct
26 Correct 111 ms 16120 KB Output is correct
27 Correct 274 ms 26164 KB Output is correct
28 Correct 257 ms 26204 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 1 ms 256 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 1 ms 256 KB Output is correct
35 Correct 1 ms 256 KB Output is correct
36 Correct 15 ms 1408 KB Output is correct
37 Correct 249 ms 25976 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 256 KB Output is correct
40 Correct 11 ms 1408 KB Output is correct
41 Correct 253 ms 26104 KB Output is correct
42 Correct 1 ms 256 KB Output is correct
43 Correct 1 ms 256 KB Output is correct
44 Correct 6 ms 1024 KB Output is correct
45 Correct 128 ms 16248 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 62 ms 6776 KB Output is correct
50 Correct 241 ms 26104 KB Output is correct
51 Correct 242 ms 26104 KB Output is correct
52 Correct 256 ms 26104 KB Output is correct
53 Correct 112 ms 16120 KB Output is correct
54 Correct 114 ms 16120 KB Output is correct
55 Correct 245 ms 26104 KB Output is correct
56 Correct 253 ms 26104 KB Output is correct
57 Correct 113 ms 16120 KB Output is correct
58 Correct 0 ms 256 KB Output is correct
59 Correct 1 ms 256 KB Output is correct
60 Correct 1 ms 384 KB Output is correct
61 Correct 63 ms 6776 KB Output is correct
62 Correct 242 ms 26104 KB Output is correct
63 Correct 247 ms 26104 KB Output is correct
64 Correct 258 ms 26104 KB Output is correct
65 Correct 1 ms 256 KB Output is correct
66 Correct 63 ms 7032 KB Output is correct
67 Correct 249 ms 26104 KB Output is correct
68 Correct 242 ms 26104 KB Output is correct
69 Correct 262 ms 26104 KB Output is correct
70 Correct 1 ms 256 KB Output is correct
71 Correct 1 ms 256 KB Output is correct
72 Correct 1 ms 256 KB Output is correct
73 Correct 65 ms 6776 KB Output is correct
74 Correct 251 ms 25980 KB Output is correct
75 Correct 246 ms 26104 KB Output is correct
76 Correct 244 ms 26104 KB Output is correct
77 Correct 249 ms 26104 KB Output is correct
78 Correct 1 ms 256 KB Output is correct
79 Correct 1 ms 256 KB Output is correct
80 Correct 6 ms 1024 KB Output is correct
81 Correct 136 ms 16120 KB Output is correct
82 Correct 1 ms 256 KB Output is correct
83 Correct 1 ms 256 KB Output is correct
84 Correct 1 ms 256 KB Output is correct
85 Correct 60 ms 6776 KB Output is correct
86 Correct 116 ms 16252 KB Output is correct
87 Correct 113 ms 16120 KB Output is correct
88 Correct 117 ms 16120 KB Output is correct
89 Correct 109 ms 16248 KB Output is correct
90 Correct 1 ms 256 KB Output is correct
91 Correct 1 ms 256 KB Output is correct
92 Correct 5 ms 768 KB Output is correct
93 Correct 109 ms 12152 KB Output is correct
94 Correct 1 ms 256 KB Output is correct
95 Correct 1 ms 256 KB Output is correct
96 Correct 1 ms 256 KB Output is correct
97 Correct 29 ms 3328 KB Output is correct
98 Correct 108 ms 12152 KB Output is correct
99 Correct 107 ms 12152 KB Output is correct
100 Correct 112 ms 12152 KB Output is correct
101 Correct 117 ms 12156 KB Output is correct
102 Correct 112 ms 12152 KB Output is correct
103 Correct 108 ms 12152 KB Output is correct
104 Correct 108 ms 12152 KB Output is correct
105 Correct 111 ms 12152 KB Output is correct