oj.uz

Submission #374549

# Submission time Handle Problem Language Result Execution time Memory
374549 2021-03-07T12:38:21 Z Return_0 Ili (COI17_ili) C++17
49 / 100
 4000 ms 12928 KB 
#pragma GCC optimize("Ofast,unroll-loops")
// #pragma comment(linker, "/stack:200000000")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

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

#ifdef SINA
#define dbg(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1> void __f(const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << std::endl; }
template <typename Arg1, typename... Args> void __f (const char* names, Arg1&& arg1, Args&&... args) {
	const char* comma = strchr(names + 1, ',');cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...); }
#define dbg2(x, j, n) cout<< #x << " : "; output((j), (n), x, 1); cout.flush();
#else
#define dbg(...) 0
#define dbg2(x, j, n) 0
#endif
#define SZ(x) ((ll)((x).size()))
#define File(s, t) freopen(s ".txt", "r", stdin); freopen(t ".txt", "w", stdout);
#define input(j, n, a) for (int _i = (j); _i < (n)+(j); _i++) cin>> a[_i];
#define output(j, n, a, t) for (int _i = (j); _i < (n)+(j); _i++) cout<< a[_i] << (((t) && _i != (n)+(j)-1)? ' ' : '\n');
#define kill(x) return cout<< (x) << endl, 0
#define cl const ll
#define fr first
#define sc second
#define lc (v << 1)
#define rc (lc | 1)
#define mid ((l + r) >> 1)
#define All(x) (x).begin(), (x).end()

cl inf = sizeof(ll) == 4 ? (1e9 + 10) : (3e18), mod = 1e9 + 7, MOD = 998244353;

template <class A,class B> ostream& operator << (ostream& out,const pair<A,B>&a){return out<<'('<<a.first<<", "<<a.second<<')';}
template <class A> ostream& operator << (ostream& out, const vector<A> &a) {
	out<< '['; for (int i = -1; ++i < int(a.size());) out<< a[i] << (i + 1 < int(a.size()) ? ", " : ""); return out<<']'; }
template <class T, typename _t = less <T> > using Tree = tree <T, null_type, _t, rb_tree_tag, tree_order_statistics_node_update>;

cl N = 1e4 + 1;

bitset <N> bt [N], lmp, mask;
ll X [N], Y [N], n, m;
char state [N], ans [N];
vector <ll> ones;

bool ok () {
	for (auto &v : ones) if (!(lmp & bt[v]).count()) return false;
	return true;
}

int main ()
{
	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);

	cin>> n >> m;
	for (ll i = 1; i <= n; i++) mask[i] = 1;
	for (ll i = 1; i <= m; i++) {
		cin>> state[i];
		if (state[i] == '1') ones.push_back(i);
	}

	for (ll i = 1; i <= m; i++) {
		char c;
		cin>> c;
		if (c == 'x') {
			cin>> X[i];
			bt[i][X[i]] = 1;
		} else {
			cin>> X[i];
			bt[i] |= bt[X[i]];
			X[i] += N;
		}

		cin>> c;
		if (c == 'x') {
			cin>> Y[i];
			bt[i][Y[i]] = 1;
		} else {
			cin>> Y[i];
			bt[i] |= bt[Y[i]];
			Y[i] += N;
		}
	}

	lmp = mask;
	for (ll i = 1; i <= m; i++) {
		if (state[i] == '0') {
			ans[i] = '0';
			bt[i].flip();
			lmp &= bt[i];
		}

		else if (state[i] == '1') ans[i] = '1';
	}

	for (ll i = 1; i <= m; i++) if (state[i] == '?') {
		if (!(lmp & bt[i]).count()) ans[i] = '0';
		else {
			bt[i].flip();
			mask = lmp;
			lmp &= bt[i];
			if (!ok()) ans[i] = '1';
			else ans[i] = '?';
			lmp = mask;
		}
	}

	for (ll i = 1; i <= m; i++) cout<< ans[i];

	cerr<< "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";

	return 0;
}
/*
4 4
10??
x1 x2
x2 x3
x3 x4
x1 c3

4 5
11???
x1 x2
x3 x4
x1 x3
x2 x4
c3 c4

*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct

Subtask #2
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 4 ms 1004 KB Output is correct
9 Correct 2 ms 876 KB Output is correct
10 Correct 3 ms 876 KB Output is correct
11 Correct 3 ms 1004 KB Output is correct
12 Correct 3 ms 876 KB Output is correct
13 Correct 3 ms 1004 KB Output is correct
14 Correct 3 ms 1004 KB Output is correct

Subtask #3
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 4 ms 1004 KB Output is correct
9 Correct 2 ms 876 KB Output is correct
10 Correct 3 ms 876 KB Output is correct
11 Correct 3 ms 1004 KB Output is correct
12 Correct 3 ms 876 KB Output is correct
13 Correct 3 ms 1004 KB Output is correct
14 Correct 3 ms 1004 KB Output is correct
15 Correct 84 ms 7788 KB Output is correct
16 Correct 327 ms 9196 KB Output is correct
17 Correct 253 ms 10860 KB Output is correct
18 Correct 1110 ms 12680 KB Output is correct
19 Correct 453 ms 9324 KB Output is correct
20 Correct 1301 ms 12648 KB Output is correct
21 Correct 2842 ms 12928 KB Output is correct
22 Correct 2782 ms 12388 KB Output is correct
23 Correct 3016 ms 12876 KB Output is correct
24 Correct 2879 ms 12908 KB Output is correct
25 Execution timed out 4075 ms 12780 KB Time limit exceeded
26 Halted 0 ms 0 KB -