oj.uz

Submission #87079

# Submission time Handle Problem Language Result Execution time Memory
87079 2018-11-29T12:03:21 Z Just_Solve_The_Problem Energetic turtle (IZhO11_turtle) C++11
65 / 100
 896 ms 5240 KB 
#include <bits/stdc++.h>

#define ll long long

using namespace std;

const int N = (int)3e5 + 7;

int mod;
int cnt[N], lp[N];
map < pair < int, int >, int > mp;

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

int add(int a, int b) {
	return (a + b) % mod;
}

void precalc() {
	for (int i = 2; i < N; i++) {
		if (lp[i]) continue;
		for (int j = i; j < N; j += i) {
			if (!lp[j]) {
				lp[j] = i;
			}
		}
 	}
}

void add1(int x, int val) {
	while (x > 1) {
		cnt[lp[x]] += val;
		x /= lp[x];
	}
}

int calc(int n, int k) {
	if (mp.count({n, k})) {
		return mp[{n, k}];
	}
	int res = 1;
	for (int i = 2; i <= n; i++) {
		add1(i, 1);
	}
	for (int i = 2; i <= k; i++) {
		add1(i, -1);
	}
	for (int i = 2; i <= n - k; i++) {
		add1(i, -1);
	}
	for (int i = 2; i <= n; i++) {
		while (cnt[i] > 0) {
			res = mult(res, i);
			cnt[i]--;
		}
	}
	return mp[{n, k}] = res;
}

int n, m, k, t;
int dp[22][22];
int dist[22][22];
int dist1[22][22];
pair < int, int > ar[22];

main() {
	//ios::sync_with_stdio(0);
	//cin.tie(0);
	//cout.tie(0);
	memset(dp, -1, sizeof dp);
	precalc();
	cin >> n >> m >> k >> t >> mod;
	n++; m++;
	for (int i = 1; i <= k; i++) {
		cin >> ar[i].first >> ar[i].second;
		ar[i].first++;
		ar[i].second++;
	}
	k++;
	ar[k] = {n, m};
	sort(ar + 1, ar + k + 1);
	for (int i = 1; i <= k; i++) {
		dp[1][i] = calc(ar[i].first + ar[i].second - 2, ar[i].first - 1);
	}
	int ans = 0;
	for (int i = 1; i <= k; i++) {
		for (int j = 1; j < i; j++) {
			// ar[i].first <= ar[j].first
			if (ar[j].second <= ar[i].second) {
				dp[1][i] = add(dp[1][i], mod - mult(dp[1][j], calc(abs(ar[j].second - ar[i].second) + abs(ar[i].first - ar[j].first), abs(ar[i].first - ar[j].first))));
			} 
			int len1 = abs(ar[i].first - ar[j].first);
			int len2 = abs(ar[i].second - ar[j].second);
			dist[i][j] = dist[j][i] = calc(len1 + len2, len1);
			dist1[i][j] = dist1[j][i] = dist[i][j];
		}
	}
	for (int i = 1; i <= k; i++) {
		for (int j = 1; j < i; j++) {
			for (int l = j + 1; l < i; l++) {
				if (ar[j].second <= ar[l].second && ar[l].second <= ar[i].second) {
					dist1[i][j] = dist1[j][i] = add(dist1[i][j], mod - mult(dist1[i][l], dist1[l][j]));
				}
			}
		}
	}
	for (int i = 2; i <= t + 1; i++) {
		for (int j = 1; j <= k; j++) {
			dp[i][j] = dp[1][j];
			for (int l = 1; l < j; l++) {
				if (ar[l].second <= ar[j].second) {
					if (dp[i - 1][l] == -1) continue;
					dp[i][j] = add(dp[i][j], mult(dp[i - 1][l], dist1[j][l]));
				}
			}
		}
	}
	cout << dp[t + 1][k] << endl;
}
/*
5 5 3 1 1000000000
2 2
2 3
3 3
*/

Compilation message

turtle.cpp:68:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^
turtle.cpp: In function 'int main()':
turtle.cpp:87:6: warning: unused variable 'ans' [-Wunused-variable]
  int ans = 0;
      ^~~

Subtask #1
65.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1528 KB Output is correct
2 Correct 6 ms 1528 KB Output is correct
3 Correct 6 ms 1528 KB Output is correct
4 Correct 6 ms 1528 KB Output is correct
5 Correct 14 ms 1528 KB Output is correct
6 Correct 8 ms 1528 KB Output is correct
7 Correct 12 ms 1528 KB Output is correct
8 Correct 10 ms 1528 KB Output is correct
9 Correct 61 ms 1528 KB Output is correct
10 Correct 147 ms 1528 KB Output is correct
11 Correct 655 ms 2332 KB Output is correct
12 Runtime error 86 ms 5200 KB Execution killed with signal 8 (could be triggered by violating memory limits)
13 Runtime error 77 ms 5212 KB Execution killed with signal 8 (could be triggered by violating memory limits)
14 Correct 681 ms 2328 KB Output is correct
15 Correct 896 ms 2460 KB Output is correct
16 Runtime error 99 ms 5192 KB Execution killed with signal 8 (could be triggered by violating memory limits)
17 Runtime error 94 ms 5112 KB Execution killed with signal 8 (could be triggered by violating memory limits)
18 Runtime error 93 ms 5112 KB Execution killed with signal 8 (could be triggered by violating memory limits)
19 Runtime error 97 ms 5240 KB Execution killed with signal 8 (could be triggered by violating memory limits)
20 Runtime error 90 ms 5112 KB Execution killed with signal 8 (could be triggered by violating memory limits)