Submission #426025

# Submission time Handle Problem Language Result Execution time Memory
426025 2021-06-13T13:03:56 Z Kevin_Zhang_TW Food Court (JOI21_foodcourt) C++17
13 / 100
222 ms 82820 KB
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif

const int MAX_N = 300010;
const ll inf = 1ll << 60;

int n, m, q;
int res[MAX_N], cid[MAX_N];

bool is_leave[MAX_N];

//          position, delta
vector<pair<int,ll>> rec[MAX_N];
//         time, k
vector<pair<int,ll>> allq[MAX_N];

struct sgt {
	struct node {
		ll mn, pos, tg;
		void operator += (ll v) {
			mn += v, tg += v;
		}
		node (node a, node b) {
			tg = 0;
			mn = min(a.mn, b.mn);
			if (a.mn == mn) pos = a.pos;
			else pos = b.pos;
		}
		node () : mn(0), pos(0), tg(0) {}
		pair<ll,ll> get() { return make_pair(mn, pos); }
	};
	int n;
	vector<node> val;
	sgt(int _n) : n(_n) {
		val.resize(n<<1);
		for (int i = 0;i < n;++i)
			val[i+n].pos = i;
	}
	void pa(int j) { for (int i = 19;i >= 0;--i) push(j>>i); }
	void add(int l, int r, ll v) {
		int sl = l+=n, sr = r+=n;
		pa(l), pa(r-1);
		for (;l < r;l>>=1, r>>=1) {
			if (l&1) val[l++] += v;
			if (r&1) val[--r] += v;
		}
		for (--sr;sl>>=1, sr>>=1;) 
			upd(sl), upd(sr);
	}
	void push(int i) {
		if (i >= n) return;
		ll &t = val[i].tg;
		val[i<<1] += t, val[i<<1|1] += t;
		t = 0;
	}
	void upd(int i) {
		if (i >= n) return;
		push(i);
		val[i] = node(val[i<<1], val[i<<1|1]);
	}
	pair<ll,ll> qmn(int l, int r) {
		l += n, r += n;
		pa(l), pa(r-1);
		pair<ll,ll> res {inf, n};
		for (;l < r;l>>=1, r>>=1) {
			if (l&1) chmin(res, val[l++].get());
			if (r&1) chmin(res, val[--r].get());
		}
		assert(res.first < inf);
		return res;
	} 
};

// t1 for +
// t2 for -
struct bit { 
	int n;
	vector<ll> val;
	bit (int n) : n(n) {
		val.resize(n);
	}
	void add(int i, ll v) {
		for (;i < n;i += i&-i)
			val[i] += v;
	}
	ll qry(int i) {
		ll res = 0;
		for (;i;i^=i&-i) res += val[i];
		return res;
	}
	ll qry(int l, int r) { return qry(r) - qry(l-1); }
	int kth(ll k) {
		int res = 0;
		for (int i = 1<<19;i > 0;i>>=1) {
			if ((i|res) >= n || k <= val[res|i]) continue;
			assert(k > val[res|i]);
			k -= val[res|=i];
		}
		assert(k > 0);
		return res + 1; 
	} 
};

struct sss {
	vector<ll> val;
	int n;
	sss (int n) : n(n) {
		val.resize(n);
	}
	void add(int l, int r, ll v) {
		for (;l < r;++l)
			val[l] += v;
	}
	pair<ll,ll> qmn(int l, int r) {
		pair<ll,ll> res {inf, n};
		for (;l < r;++l)
			chmin(res, make_pair(val[l], (ll)l));
		return res;
	}
};
void solve() {

	//sss tree(q);
	sgt tree(q);
	bit t1(q + 10), t2(q + 10);

	for (int i = 1;i <= n;++i) {
		for (auto [j, d] : rec[i]) {
			tree.add(j, q, d);
			if (is_leave[j]) 
				t2.add(j, -d);
			else {
				assert(cid[j]);
				t1.add(j, d);
			} 
		}

		for (auto [t, k] : allq[i]) {
			auto [v, p] = tree.qmn(0, t); 

			assert(p == 0 || is_leave[p]);

			assert(p < t);

			ll rk = t1.qry(p) + k + t2.qry(p+1, t);

			//assert(p == 0 || t1.qry(p) == t1.qry(p-1));

			assert(t1.qry(p) - t2.qry(p) == v);

			if (t1.qry(t) < rk) {
				res[t] = 0;
				continue;
			}
			
			int ind = t1.kth(rk);
			
			assert(ind < t);
			res[t] = cid[ind]; 

			assert(cid[ind] >= 1 && cid[ind] <= m);
		}
	} 
}
int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n >> m >> q; ++q;

	fill(res, res + q, -1);

	for (ll t, l, r, k, i = 1;i < q;++i) {
		cin >> t;
		if (t == 1) {
			cin >> l >> r >> cid[i] >> k;
			rec[l].pb(i, k);
			rec[r+1].pb(i,-k);
		}
		if (t == 2) {
			cin >> l >> r >> k;
			is_leave[i] = true;
			rec[l].pb(i, -k);
			rec[r+1].pb(i, k);
		}
		if (t == 3) {
			cin >> l >> k;
			allq[l].pb(i, k);
		}
	}

	solve();

	for (int i = 0;i < q;++i) {
		if (res[i] == -1) continue;
		cout << res[i] << '\n';
	}

} 
# Verdict Execution time Memory Grader output
1 Runtime error 24 ms 29324 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 24 ms 29324 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 64 ms 44216 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 222 ms 82820 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 24 ms 29324 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 99 ms 20804 KB Output is correct
2 Correct 149 ms 21420 KB Output is correct
3 Correct 176 ms 21572 KB Output is correct
4 Correct 85 ms 19472 KB Output is correct
5 Correct 108 ms 20796 KB Output is correct
6 Correct 135 ms 21636 KB Output is correct
7 Correct 60 ms 19884 KB Output is correct
8 Correct 72 ms 19592 KB Output is correct
9 Correct 91 ms 20916 KB Output is correct
10 Correct 82 ms 19380 KB Output is correct
11 Correct 110 ms 21308 KB Output is correct
12 Correct 125 ms 21316 KB Output is correct
# Verdict Execution time Memory Grader output
1 Runtime error 24 ms 29324 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 24 ms 29324 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -