Submission #60058

#	Time	Username	Problem	Language	Result	Execution time	Memory
60058		SpeedOfMagic	Calvinball championship (CEOI15_teams)	C++17	60 / 100	1069 ms	66560 KiB

teams

/** MIT License Copyright (c) 2018 Vasilyev Daniil **/
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize("Ofast")
template<typename T> using v = vector<T>;
#define int long long
typedef string str;
typedef vector<int> vint;
#define rep(a, l, r) for(int a = (l); a < (r); a++)
#define pb push_back
#define sz(a) ((int) a.size())
const long long inf = 4611686018427387903; //2^62 - 1
#if 0  //FileIO
const string fileName = "";
ifstream fin ((fileName == "" ? "input.txt"  : fileName + ".in" ));
ofstream fout((fileName == "" ? "output.txt" : fileName + ".out"));
#define get fin>>
#define put fout<<
#else
#define get cin>>
#define put cout<<
#endif
#define eol put endl
void read() {}     template<typename Arg,typename... Args> void read (Arg& arg,Args&... args){get (arg)     ;read(args...) ;}
void print(){}     template<typename Arg,typename... Args> void print(Arg  arg,Args...  args){put (arg)<<" ";print(args...);}
void debug(){eol;} template<typename Arg,typename... Args> void debug(Arg  arg,Args...  args){put (arg)<<" ";debug(args...);}
int getInt(){int a; get a; return a;}
//code goes here
const int mod = 1e6 + 7;

void run() {
    int n;
    get n;
    int ans = 1;
    int lim = 0;
    rep(i, 0, n) {
        int a;
        get a;
        if (a == 1)
            continue;
        else {
            int dp[n - i][n];
            rep(j, 0, n - i)
                rep(k, 0, n)
                    dp[j][k] = 0;

            dp[0][lim] = a - 1;

            rep(j, 1, n - i)
                rep(k, 0, n) {
                    dp[j][k] = (dp[j][k] + (dp[j - 1][k] * (k + 1)) % mod) % mod;
                    if (k)
                        dp[j][k] = (dp[j][k] + dp[j - 1][k - 1]) % mod;
                }

            rep(j, 0, n)
                ans = (ans + dp[n - i - 1][j]) % mod;
        }
        lim = max(lim, a - 1);
    }
    put ans;
}

int32_t main() {srand(time(0)); ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); put fixed; put setprecision(15); run(); return 0;}

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10