Submission #1036930

#	Time	Username	Problem	Language	Result	Execution time	Memory
1036930		xnqs	Meteors (POI11_met)	C++17	100 / 100	4741 ms	48596 KiB

met

#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <utility>
#include <algorithm>
#include <cstring>
#include <cstdint>

struct Operation {
	int l, r, amt;
	Operation():
		l(0), r(0), amt(0) {}
	Operation(int l, int r, int amt):
		l(l), r(r), amt(amt) {}
};
 
struct ParallelBSQuery {
	int color;
	int l, r, m;
	ParallelBSQuery():
		color(0), l(0), r(0), m(0) {}
	ParallelBSQuery(int color, int l, int r):
		color(color), l(l), r(r), m((l+r)>>1) {}
};
 
int x, q, ops;
int color[300005];
int target[300005];
int ans[300005];
uint64_t tree[1200005];
int lazy[1200005];
std::vector<Operation> operations;
std::vector<ParallelBSQuery> queries;
std::vector<int> owned_by[300005];
 
void push(int node, int l, int r) {
	tree[node] += lazy[node];
	if (l!=r) {
		lazy[node<<1] += lazy[node];
		lazy[node<<1|1] += lazy[node];
	}
	lazy[node] = 0;
}
 
void update(int node, int l, int r, int st, int fi, int val) {
	push(node,l,r);
	if (l>fi||r<st) {
		return;
	}
	if (st<=l&&r<=fi) {
		lazy[node] += val;
		push(node,l,r);
		return;
	}
 
	int m = (l+r)>>1;
	update(node<<1,l,m,st,fi,val);
	update(node<<1|1,m+1,r,st,fi,val);
	tree[node] = tree[node<<1] + tree[node<<1|1];
}
 
uint64_t query(int node, int l, int r, int st, int fi) {
	push(node,l,r);
	if (l>fi||r<st) {
		return 0;
	}
	if (st<=l&&r<=fi) {
		return tree[node];
	}
 
	int m = (l+r)>>1;
	return query(node<<1,l,m,st,fi) + query(node<<1|1,m+1,r,st,fi);
}
 
uint64_t get_sum(int color) {
	uint64_t ret = 0;
	for (const auto& i : owned_by[color]) {
		ret += query(1,1,x,i,i);
	}
	return ret;
}
 
int main() {
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(NULL);
	std::cout.tie(NULL);
 
	std::cin >> q >> x;
	for (int i = 1; i <= x; i++) {
		std::cin >> color[i];
		owned_by[color[i]].emplace_back(i);
	}
 
	for (int i = 1; i <= q; i++) {
		std::cin >> target[i];
	}
 
	std::cin >> ops;
	operations.reserve(ops);
	for (int i = 0, l, r, amt; i < ops; i++) {
		std::cin >> l >> r >> amt;
		operations.emplace_back(l,r,amt);
	}
 
	for (int i = 0; i < q; i++) {
		ans[i+1] = -1;
		queries.emplace_back(i+1,0,ops-1);
	}
 
	for (int iterations = 0; iterations < 19; iterations++) {
		memset(tree,0,sizeof(tree));
		memset(lazy,0,sizeof(lazy));
		std::sort(queries.begin(),queries.end(),[](const ParallelBSQuery& a, const ParallelBSQuery& b) {
			return a.m < b.m;
		});
 
		int scanline = 0;
		for (auto& [color, l, r, m] : queries) {
			if (l>r) {
				continue;
			}
 
			while (scanline<=m) {
				auto [i, j, amt] = operations[scanline];
				if (i>j) {
					update(1,1,x,1,j,amt);
					update(1,1,x,i,x,amt);
				}
				else {
					update(1,1,x,i,j,amt);
				}
				++scanline;
			}
 
			uint64_t cand = get_sum(color);
			if (cand>=target[color]) {
				ans[color] = m;
				r = m-1;
			}
			else {
				l = m+1;
			}
 
			m = (l+r)>>1;
		}
	}
 
	for (int i = 1; i <= q; i++) {
		if (ans[i]==-1) std::cout << "NIE\n";
		else std::cout << ans[i]+1 << "\n";
	}
}

Compilation message (stderr)

met.cpp: In function 'int main()':
met.cpp:137:12: warning: comparison of integer expressions of different signedness: 'uint64_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  137 |    if (cand>=target[color]) {
      |        ~~~~^~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 12 / 12
• Subtask 3: 12 / 12
• Subtask 4: 12 / 12
• Subtask 5: 13 / 13
• Subtask 6: 13 / 13
• Subtask 7: 13 / 13
• Subtask 8: 13 / 13