oj.uz

답안 #503351

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
503351 2022-01-07T17:16:12 Z CraniXort Calvinball championship (CEOI15_teams) C++17
100 / 100
 111 ms 588 KB 
#include <bits/stdc++.h>

#define fin std::cin
#define fout std::cout

// std::ifstream fin("calvinball.in");
// std::ofstream fout("calvinball.out");


const long long mod = 1000007;


int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(NULL);
    std::cout.tie(NULL);

    int n;
    fin >> n;
    std::vector <int> v(n), max(n);

    for(int i = 0; i < n; i ++)
        fin >> v[i];

    max[0] = 0;
    for(int i = 1; i < n; i ++)
        max[i] = std::max(max[i-1], v[i-1]);

    long long dp[2][n+1], current = 0, next = 1;
    for(int i = 0; i < n; i ++)
        dp[current][i] = 1;

    long long ans = 0;

    for(int i = n-1; i >= 0; i--, current ^= 1, next ^= 1) {
        ans = ans + (v[i] - 1) * dp[current][max[i]];
        ans %= mod;

        for(int j = 0; j < i; j ++)
            dp[next][j] = (j * dp[current][j] + dp[current][j+1]) % mod;
        
    }

    fout << (1 + ans) % mod << '\n';



    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 316 KB Output is correct
3 Correct 1 ms 204 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 208 KB Output is correct
3 Correct 0 ms 312 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 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

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 520 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 23 ms 332 KB Output is correct
2 Correct 22 ms 332 KB Output is correct
3 Correct 25 ms 448 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 92 ms 520 KB Output is correct
2 Correct 106 ms 540 KB Output is correct
3 Correct 111 ms 588 KB Output is correct