Submission #426038

# Submission time Handle Problem Language Result Execution time Memory
426038 2021-06-13T13:11:10 Z Kevin_Zhang_TW Food Court (JOI21_foodcourt) C++17
13 / 100
242 ms 82776 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);
			pos = a.mn == mn ? a.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;
//		for (int i = n-1;i > 0;--i)
//			upd(i);
	}
	void pa(int j) { for (int i = 20;i >= 0;--i) push(j>>i); }
	void add(int l, int r, ll v) {
		assert(r == q);
		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 28 ms 29380 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 28 ms 29380 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 89 ms 44268 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 242 ms 82776 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 28 ms 29380 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 116 ms 20892 KB Output is correct
2 Correct 130 ms 21524 KB Output is correct
3 Correct 134 ms 21648 KB Output is correct
4 Correct 90 ms 19564 KB Output is correct
5 Correct 128 ms 20596 KB Output is correct
6 Correct 148 ms 21632 KB Output is correct
7 Correct 63 ms 19960 KB Output is correct
8 Correct 72 ms 19596 KB Output is correct
9 Correct 90 ms 20936 KB Output is correct
10 Correct 97 ms 19416 KB Output is correct
11 Correct 122 ms 21300 KB Output is correct
12 Correct 133 ms 21424 KB Output is correct
# Verdict Execution time Memory Grader output
1 Runtime error 28 ms 29380 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Runtime error 28 ms 29380 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -