Submission #587476

#	Time	Username	Problem	Language	Result	Execution time	Memory
587476		NekoRolly	RMQ (NOI17_rmq)	C++17	100 / 100	55 ms	9824 KiB

rmq

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5+4;

struct St{
	int n,t[N<<1];

	void up(int l,int r,int val){
		for (l+=n, r+=n; l<r; l>>=1, r>>=1){
			if (l&1) t[l] = max(t[l], val), l++;
			if (r&1) r--, t[r] = max(t[r], val);
		}
	}

	int que(int i){ int ans = t[i+=n];
		for (; i>>=1; ) ans = max(ans, t[i]);
		return ans;
	}
} d1;

int n,q;
int a[N],p[N];
int L[N],R[N];
set<int> d2;
vector<int> d3[N];

int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	
	cin >> n >> q; d1.n = n;

	for (int i=0; i<n; i++) R[i] = n-1, p[i] = -1;

	for (int i=0,l,r,x; i<q; i++){ cin >> l >> r >> x;
		d1.up(l, r+1, x);
		L[x] = max(L[x], l), R[x] = min(R[x], r);
	}

	for (int i=0; i<n; i++) d3[d1.que(i)].push_back(i);

	for (int i=0; i<n; i++){ int pos = -1;
		for (int j : d3[i]) d2.insert(j);
		auto it = d2.lower_bound(L[i]);
		if (it != d2.end() && *it <= R[i]) pos = *it;
		if (pos == -1){
			for (int i=0; i<n; i++) p[i] = -1;
			break;
		}
		p[pos] = i; d2.erase(pos);
	}

	for (int i=0; i<n; i++) cout << p[i] << " "; cout << "\n";

    return 0;
}

Compilation message (stderr)

rmq.cpp: In function 'int main()':
rmq.cpp:53:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   53 |  for (int i=0; i<n; i++) cout << p[i] << " "; cout << "\n";
      |  ^~~
rmq.cpp:53:47: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   53 |  for (int i=0; i<n; i++) cout << p[i] << " "; cout << "\n";
      |                                               ^~~~

• Subtask 1: 23 / 23
• Subtask 2: 44 / 44
• Subtask 3: 33 / 33