Submission #527171

#	Time	Username	Problem	Language	Result	Execution time	Memory
527171		squiddy	Calvinball championship (CEOI15_teams)	C++14	70 / 100	58 ms	65540 KiB

teams

#include <bits/stdc++.h>

using namespace std;
#define FOR(v, s, e) for (int v = s; v < e; v++)
#define FOR_REV(v, s, e) for (int v = e - 1; v >= s; v--)

#define MOD 1000007
int n, ans, cmax = 1;
int pf[10005][10005];

int main() {
	cin >> n;
	FOR(i, 0, n) {
		pf[0][i] = 1;
	}
	FOR(i, 1, n) {
		FOR(j, 0, n) {
			pf[i][j] = ((j + 1) * pf[i - 1][j] + pf[i - 1][j + 1]) % MOD;
		}
	}
	FOR_REV(i, 0, n) {
		int cval;
		cin >> cval;
		ans = (ans + (cval - 1) * pf[i][cmax - 1]) % MOD;
		cmax = max(cmax, cval);
	}
	cout << (ans + 1) % MOD;
}

• 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: 10 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10