oj.uz

Submission #420291

# Submission time Handle Problem Language Result Execution time Memory
420291 2021-06-08T09:04:08 Z _fractal Safety (NOI18_safety) C++14
66 / 100
 511 ms 1540 KB 
/**
 *	author:	 fractal
 *	timus: 	 288481RF
**/

#include <bits/stdc++.h>
using namespace std;

#define F first
#define S second 
#define mp make_pair
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define speed ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)
#define sz(x) (int)x.size()
#define len(x) (int)strlen(x)
#define all(x) x.begin(), x.end()
#define debug cerr << "OK\n";
#define ub upper_bound
#define lb lower_bound 
#define nl printf("\n");
#define clbuff fflush(stdin);
#define make_unique(x) sort(all(x)), x.erase(unique(all(x)), x.end())

mt19937 bruh(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rofl(chrono::steady_clock::now().time_since_epoch().count());
 
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef set<int> si;
typedef set<ll> sll;
typedef set<pii> spii;
typedef set<pll> spll;
typedef multiset <int> msi;
typedef multiset <ll> msll;
typedef map <int, int> mi;
typedef map <ll, ll> mll;
 
const int N = 1e5 + 2;
const int M = 1e5;
const int mod = 0;
const int inf = 2e9 + 3;
const ll INF = 1e11;
const ld pi2 = 2.0 * 3.141592;
const ld pi = 3.141592;
const ld eps = 1e-12;

const int dx[4] = {1, -1, 0, 0};
const int dy[4] = {0, 0, -1, 1};

void files(string s = "main") {
	#ifndef PC
		freopen((s + ".in").c_str(), "r", stdin);
		freopen((s + ".out").c_str(), "w", stdout);
	#endif
}

int add(int a, int b) {
	if (a + b < 0) return a + b + mod;
	if (a + b >= mod) return a + b - mod;
	return a + b;		
}

int mul(int a, int b) {
	return a * 1LL * b % mod;
}

int binpow(int a, int n) {
	int ret = 1;
	while (n) {
		if (n & 1) ret = mul(ret, a);
		a = mul(a, a);
		n >>= 1;
	}
	return ret;
}

ll ans = 0, n, h, a[N];
vector<pll> v, u;

int main() {
	speed;
	cin >> n >> h;
	if (n > 5000) {
		cout << -1 << '\n';
		return 0;
	}
	for (int i = 1; i <= n; ++i)
		cin >> a[i];
	v.pb({-INF, -1});
	v.pb({a[1], 1});
	ans = 0;
	for (int i = 2; i <= n; ++i) {
		for (int j = 0; j < sz(v) - 1; ++j) {
			u.pb(v[j]);
			if (v[j].S < 0 && v[j + 1].S > 0) {
				u.pb({v[j + 1].F, 0});
			}
		}
		u.pb(v.back());
		v = u;
		u.clear();
		for (auto &it : v)
			it.F += (it.S <= 0 ? -h : h);
		for (int j = 0; j < sz(v); ++j) {
			if (v[j].S == 0) {
				if (a[i] < v[j].F)
					ans += v[j].F - a[i];
				if (a[i] > v[j + 1].F)
					ans += a[i] - v[j + 1].F;
			}
		}
		for (int j = 0; j < sz(v); ++j) {
			if (v[j].F < a[i]) {
				if (sz(u) == 0 || u.back().S != v[j].S - 1) {
					if (sz(u) && u.back().F == v[j].F)
						u.ppb();
					u.pb({v[j].F, v[j].S - 1});
				}
				if (j + 1 < sz(v) && v[j + 1].F > a[i]) {
					if (sz(u) && u.back().F == a[i])
						u.ppb();
					if (sz(u) == 0 || u.back().S != v[j].S + 1)
						u.pb({a[i], v[j].S + 1});
				}
				else if (j + 1 == sz(v)) {
					if (sz(u) && u.back().F == a[i])
						u.ppb();
					if (sz(u) == 0 || u.back().S != v[j].S + 1)
						u.pb({a[i], v[j].S + 1});
				}
			}
			else {
				if (sz(u) && u.back().F == v[j].F)
					u.ppb();
				if (sz(u) == 0 || u.back().S != v[j].S + 1)
					u.pb({v[j].F, v[j].S + 1});
			}
		}
		v = u;
		u.clear();
	}
	cout << ans << '\n';
}

Compilation message

safety.cpp: In function 'int mul(int, int)':
safety.cpp:74:21: warning: division by zero [-Wdiv-by-zero]
   74 |  return a * 1LL * b % mod;
      |         ~~~~~~~~~~~~^~~~~
safety.cpp: In function 'void files(std::string)':
safety.cpp:62:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |   freopen((s + ".in").c_str(), "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
safety.cpp:63:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |   freopen((s + ".out").c_str(), "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 308 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 324 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 332 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 3 ms 328 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 5 ms 332 KB Output is correct
16 Correct 3 ms 332 KB Output is correct
17 Correct 4 ms 332 KB Output is correct
18 Correct 3 ms 332 KB Output is correct
19 Correct 3 ms 332 KB Output is correct

Subtask #6
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 3 ms 328 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 5 ms 332 KB Output is correct
16 Correct 3 ms 332 KB Output is correct
17 Correct 4 ms 332 KB Output is correct
18 Correct 3 ms 332 KB Output is correct
19 Correct 3 ms 332 KB Output is correct
20 Correct 5 ms 332 KB Output is correct
21 Correct 4 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 4 ms 332 KB Output is correct
24 Correct 3 ms 332 KB Output is correct
25 Correct 3 ms 332 KB Output is correct
26 Correct 3 ms 332 KB Output is correct
27 Correct 3 ms 332 KB Output is correct

Subtask #7
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 3 ms 328 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 5 ms 332 KB Output is correct
16 Correct 3 ms 332 KB Output is correct
17 Correct 4 ms 332 KB Output is correct
18 Correct 3 ms 332 KB Output is correct
19 Correct 3 ms 332 KB Output is correct
20 Correct 5 ms 332 KB Output is correct
21 Correct 4 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 4 ms 332 KB Output is correct
24 Correct 3 ms 332 KB Output is correct
25 Correct 3 ms 332 KB Output is correct
26 Correct 3 ms 332 KB Output is correct
27 Correct 3 ms 332 KB Output is correct
28 Correct 225 ms 720 KB Output is correct
29 Correct 136 ms 564 KB Output is correct
30 Correct 306 ms 1296 KB Output is correct
31 Correct 340 ms 912 KB Output is correct
32 Correct 364 ms 1440 KB Output is correct
33 Correct 246 ms 852 KB Output is correct
34 Correct 511 ms 1176 KB Output is correct

Subtask #8
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 328 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 5 ms 332 KB Output is correct
22 Correct 3 ms 332 KB Output is correct
23 Correct 4 ms 332 KB Output is correct
24 Correct 3 ms 332 KB Output is correct
25 Correct 3 ms 332 KB Output is correct
26 Correct 5 ms 332 KB Output is correct
27 Correct 4 ms 332 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 4 ms 332 KB Output is correct
30 Correct 3 ms 332 KB Output is correct
31 Correct 3 ms 332 KB Output is correct
32 Correct 3 ms 332 KB Output is correct
33 Correct 3 ms 332 KB Output is correct
34 Correct 225 ms 720 KB Output is correct
35 Correct 136 ms 564 KB Output is correct
36 Correct 306 ms 1296 KB Output is correct
37 Correct 340 ms 912 KB Output is correct
38 Correct 364 ms 1440 KB Output is correct
39 Correct 246 ms 852 KB Output is correct
40 Correct 511 ms 1176 KB Output is correct
41 Correct 245 ms 840 KB Output is correct
42 Correct 142 ms 640 KB Output is correct
43 Correct 436 ms 1540 KB Output is correct
44 Correct 300 ms 808 KB Output is correct
45 Correct 422 ms 1116 KB Output is correct
46 Correct 350 ms 1024 KB Output is correct

Subtask #9
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 308 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 324 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Incorrect 1 ms 332 KB Output isn't correct
20 Halted 0 ms 0 KB -