Submission #916122

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
916122	2024-01-25T10:44:44 Z	GrindMachine	Gap (APIO16_gap)	C++17	0.269521 / 100	107 ms	16784 KB

gap

#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;

template<typename T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long int ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

#define fastio ios_base::sync_with_stdio(false); cin.tie(NULL)
#define pb push_back
#define endl '\n'
#define sz(a) (int)a.size()
#define setbits(x) __builtin_popcountll(x)
#define ff first
#define ss second
#define conts continue
#define ceil2(x,y) ((x+y-1)/(y))
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define yes cout << "Yes" << endl
#define no cout << "No" << endl

#define rep(i,n) for(int i = 0; i < n; ++i)
#define rep1(i,n) for(int i = 1; i <= n; ++i)
#define rev(i,s,e) for(int i = s; i >= e; --i)
#define trav(i,a) for(auto &i : a)

template<typename T>
void amin(T &a, T b) {
    a = min(a,b);
}

template<typename T>
void amax(T &a, T b) {
    a = max(a,b);
}

#ifdef LOCAL
#include "debug.h"
#else
#define debug(x) 42
#endif

/*

read some solutions a long time ago, slightly remember some ideas
may have still solved it if not for those ideas

*/

const int MOD = 1e9 + 7;
const int N = 1e5 + 5;
const int inf1 = int(1e9) + 5;
const ll inf2 = ll(1e18) + 5;
const int B = 1e5 + 5;

#include "gap.h"

ll go(ll l, ll r){
	if(l >= r) return 0;

	// split into B segs
	ll len = r-l+1;
	ll cnt1 = B;
	ll cnt2 = len%B;
	cnt1 -= cnt2;

	vector<pll> segs;
	ll ptr = l;

	rep1(i,cnt1){
		if(len >= B){
			segs.pb({ptr,ptr+len/B-1});
		}
		ptr += len/B;
	}

	rep1(i,cnt2){
		segs.pb({ptr,ptr+ceil2(len,B)-1});
		ptr += ceil2(len,B);
	}

	// cout << "l = " << l << endl;
	// cout << "r = " << r << endl;
	// for(auto [lx,rx] : segs){
	// 	cout << lx << " " << rx << endl;
	// }

	assert(ptr == r+1);

	vector<pll> seg_vals;
	ll ans = 0;

	rep(i,sz(segs)){
		ll mn,mx;
		auto [lx,rx] = segs[i];
		MinMax(lx,rx,&mn,&mx);
		seg_vals.pb({mn,mx});
	}

	while(!segs.empty() and seg_vals.back().ff == -1){
		segs.pop_back();
		seg_vals.pop_back();
	}

	reverse(all(segs));
	reverse(all(seg_vals));

	while(!segs.empty() and seg_vals.back().ff == -1){
		segs.pop_back();
		seg_vals.pop_back();
	}

	reverse(all(segs));
	reverse(all(seg_vals));

	ll last_active = -1;

	for(auto [mn,mx] : seg_vals){
		if(mn != -1){
			if(last_active != -1){
				amax(ans,mn-last_active);
			}
			last_active = mx;
		}
	}

	if(count(all(seg_vals),make_pair<ll>(-1ll,-1ll)) == 0){
		ll lx = segs[0].ff;
		ll rx = segs.back().ss;
		amax(ans,go(lx,rx));
	}

	return ans;
}

long long findGap(int T, int n)
{
	return go(0,1e18);
}

Subtask #1

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	5 ms	5064 KB	Output isn't correct
2	Incorrect	7 ms	7112 KB	Output isn't correct
3	Incorrect	7 ms	7112 KB	Output isn't correct
4	Incorrect	8 ms	7112 KB	Output isn't correct
5	Incorrect	20 ms	13272 KB	Output isn't correct
6	Incorrect	10 ms	7112 KB	Output isn't correct
7	Incorrect	11 ms	7112 KB	Output isn't correct
8	Incorrect	9 ms	7112 KB	Output isn't correct
9	Incorrect	9 ms	7112 KB	Output isn't correct
10	Incorrect	25 ms	13260 KB	Output isn't correct
11	Incorrect	13 ms	7112 KB	Output isn't correct
12	Incorrect	13 ms	7056 KB	Output isn't correct
13	Incorrect	15 ms	7112 KB	Output isn't correct
14	Incorrect	12 ms	7112 KB	Output isn't correct
15	Incorrect	32 ms	13260 KB	Output isn't correct
16	Incorrect	23 ms	7044 KB	Output isn't correct
17	Incorrect	22 ms	7052 KB	Output isn't correct
18	Incorrect	22 ms	7056 KB	Output isn't correct
19	Incorrect	23 ms	7044 KB	Output isn't correct
20	Incorrect	45 ms	13436 KB	Output isn't correct
21	Incorrect	43 ms	7320 KB	Output isn't correct
22	Incorrect	43 ms	7376 KB	Output isn't correct
23	Incorrect	43 ms	7316 KB	Output isn't correct
24	Incorrect	43 ms	7312 KB	Output isn't correct
25	Incorrect	107 ms	16784 KB	Output isn't correct
26	Incorrect	43 ms	7312 KB	Output isn't correct
27	Incorrect	43 ms	7308 KB	Output isn't correct
28	Incorrect	43 ms	7324 KB	Output isn't correct
29	Incorrect	45 ms	7316 KB	Output isn't correct
30	Incorrect	55 ms	13712 KB	Output isn't correct
31	Incorrect	9 ms	7112 KB	Output isn't correct
32	Incorrect	8 ms	7112 KB	Output isn't correct

Subtask #2

0.2695213653 / 70.0

#	Verdict	Execution time	Memory	Grader output
1	Partially correct	6 ms	7112 KB	Partially correct
2	Partially correct	8 ms	7112 KB	Partially correct
3	Partially correct	8 ms	7112 KB	Partially correct
4	Partially correct	8 ms	7112 KB	Partially correct
5	Partially correct	20 ms	13272 KB	Partially correct
6	Partially correct	9 ms	7112 KB	Partially correct
7	Partially correct	9 ms	7112 KB	Partially correct
8	Partially correct	9 ms	6920 KB	Partially correct
9	Partially correct	10 ms	7112 KB	Partially correct
10	Partially correct	25 ms	13272 KB	Partially correct
11	Partially correct	13 ms	7112 KB	Partially correct
12	Partially correct	12 ms	7084 KB	Partially correct
13	Partially correct	13 ms	7072 KB	Partially correct
14	Partially correct	12 ms	7112 KB	Partially correct
15	Partially correct	33 ms	13344 KB	Partially correct
16	Partially correct	23 ms	7048 KB	Partially correct
17	Partially correct	24 ms	7048 KB	Partially correct
18	Partially correct	22 ms	7052 KB	Partially correct
19	Partially correct	23 ms	7036 KB	Partially correct
20	Partially correct	45 ms	13408 KB	Partially correct
21	Correct	45 ms	7312 KB	Output is correct
22	Correct	43 ms	7456 KB	Output is correct
23	Correct	43 ms	7316 KB	Output is correct
24	Correct	42 ms	7312 KB	Output is correct
25	Partially correct	104 ms	16680 KB	Partially correct
26	Correct	43 ms	7308 KB	Output is correct
27	Correct	43 ms	7524 KB	Output is correct
28	Correct	43 ms	7272 KB	Output is correct
29	Correct	43 ms	7312 KB	Output is correct
30	Partially correct	55 ms	13560 KB	Partially correct
31	Partially correct	9 ms	7112 KB	Partially correct
32	Partially correct	9 ms	7112 KB	Partially correct