oj.uz

답안 #97435

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
97435 2019-02-16T01:50:26 Z jasony123123 Calvinball championship (CEOI15_teams) C++11
100 / 100
 556 ms 604 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
#include <array>
//#include <ext/pb_ds/tree_policy.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
//using namespace __gnu_pbds;

#define FOR(i,start,end) for(int i=start;i<(int)(end);i++)
#define FORE(i,start,end) for(int i=start;i<=(int)end;i++)
#define RFOR(i,start,end) for(int i = start; i>end; i--)
#define RFORE(i,start,end) for(int i = start; i>=end; i--)
#define all(a) a.begin(), a.end()
#define mt make_tuple
#define mp make_pair
#define v vector
#define sf scanf
#define pf printf
#define dvar(x) cout << #x << " := " << x << "\n"
#define darr(x,n) FOR(i,0,n) cout << #x << "[" << i << "]" << " := " << x[i] << "\n"

typedef long long ll;
typedef long double ld;
typedef pair<int, int > pii;
typedef pair<ll, ll> pll;
//template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<class T> void minn(T &a, T b) { a = min(a, b); }
template<class T> void maxx(T &a, T b) { a = max(a, b); }

void io() {
#ifdef LOCAL_PROJECT 
	freopen("input.in", "r", stdin); freopen("output.out", "w", stdout);
#else
#endif
	ios_base::sync_with_stdio(false); cin.tie(NULL);
}

const ll INF = 1e14;
/***********************CEOI 2015 D1 Calvin*****************************************/
const int MOD = 1000007;
inline int add(int a, int b) { return (a + b) % MOD; }
inline int mul(int a, int b) { return (1LL * a*b) % MOD; }

int n, nums[10099], seen[10099];
array<int, 10099> dpold, dpcur;

int main() {
	io();
	cin >> n;
	FOR(i, 0, n) cin >> nums[i];
	seen[0] = nums[0];
	FOR(i, 1, n) seen[i] = max(nums[i], seen[i - 1]);
	int ans = 1;
	RFORE(i, n - 1, 0) {
		if (n - 1 - i == 0)
			fill(all(dpcur), 1);
		else {
			swap(dpold, dpcur);
			FOR(s, 1, n)
				dpcur[s] = add(mul(s, dpold[s]), dpold[s + 1]);
		}

		ans = add(ans, mul(nums[i] - 1, dpcur[seen[i - 1]]));
	}
	cout << ans << "\n";
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 384 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 384 KB Output is correct
2 Correct 10 ms 384 KB Output is correct
3 Correct 8 ms 472 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 512 KB Output is correct
2 Correct 13 ms 512 KB Output is correct
3 Correct 16 ms 512 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 467 ms 512 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 164 ms 604 KB Output is correct
2 Correct 147 ms 512 KB Output is correct
3 Correct 143 ms 536 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 514 ms 512 KB Output is correct
2 Correct 556 ms 552 KB Output is correct
3 Correct 506 ms 588 KB Output is correct