Submission #1116686

#	Time	Username	Problem	Language	Result	Execution time	Memory
1116686		vjudge1	Nice sequence (IZhO18_sequence)	C++17	0 / 100	19 ms	592 KiB

sequence

#include <bits/stdc++.h>
// #pragma optimize("g", on)
// #pragma GCC optimize ("inline")
// #pragma GCC optimize ("Ofast")
#pragma GCC optimize ("unroll-loops")
// #pragma GCC optimize ("03")
#pragma GCC target ("sse,sse2,sse3,ssse3,sse4,popcnt,abm,avx2,mmx,fma,avx,tune=native")
void Freopen () {
    #ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    #endif
}
using namespace std;
#define fi first
#define se second
// #define int long long
const int N = 5e3 + 7, M = 1e4 + 7;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());

void solve() {
	int n, m;
	cin>>n>>m;
	int mxx = 0;
	vector<vector<int> > res;
	for(int j = 1; j <= 100000; j++) {
		int k = (rnd() % 10) + 1;
		vector<int> pref(k + 2, 0);
		vector<int> vec;
		for(int i = 1; i <= k; i++) {
			int x = 0;
			while(!x) {
				uniform_int_distribution<int> distrib(-10, 10);
				x = distrib(rnd);
			}
			pref[i] = pref[i - 1] + x;
			vec.push_back(x);
		}
		bool ok = 1;
		for(int i = 1; i <= k; i++) {
			if(i >= n && (pref[i] - pref[i - n]) >= 0) {
				ok = 0;
				break;
			}
			if(i >= m && (pref[i] - pref[i - m]) <= 0) {
				ok = 0;
				break;
			}
		}
		if(ok) {
			if(k > mxx) {
				mxx = k;
				res.clear();
				res.push_back(vec);
			}else if(mxx == k)res.push_back(vec);
		}
	}
	cout << mxx << '\n';
	for(auto i : res[0])cout << i << ' ';
	cout << '\n';
	// int cnt = 0;
	// for(auto j : res) {
	// 	cout << "Sequence #" << ++cnt << '\n';
	// 	for(auto i : j)cout << i << ' ';
	// 	cout << "\n>>>>>>>>>>>>>>>>>>>\n";
	// }
}
signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	Freopen();
	int T = 1;
	cin>>T;
	while(T --)solve();
}

Compilation message (stderr)

sequence.cpp: In function 'void Freopen()':
sequence.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
sequence.cpp:11:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 6
• Subtask 2: 0 / 9
• Subtask 3: 0 / 14
• Subtask 4: 0 / 15
• Subtask 5: 0 / 14
• Subtask 6: 0 / 18
• Subtask 7: 0 / 24