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Submission #234718

# Submission time Handle Problem Language Result Execution time Memory
234718 2020-05-25T10:42:05 Z Goolakh Calvinball championship (CEOI15_teams) C++17
10 / 100
 380 ms 640 KB 
// Do you knOW what it feels like?

		// To be TorTured by your own MinD?

	// I don't wanna feel the PAIN.

// I BeG you to KILL me, pleASE...

#include <bits/stdc++.h>
using namespace std;

#pragma GCC optimize("O2")
#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("Os")

#define F first
#define S second
#define pb push_back
#define SZ(x) (ll)(x.size())
#define all(x) x.begin(),x.end()

typedef int ll;
typedef pair<ll,ll> pll;

//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const ll maxn=1e4+10, lg=20, mod=1e9+7, inf=1e18;

ll n;
long long dp[2][maxn],ans=1;
pll ad[maxn];

int main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	
	cin>>n;
	ll mx=0;
	for(int i=1;i<=n;i++){
		ll x; cin>>x;
		ad[n-i]={mx,x-1};
		//cout<<n-i<<' '<<mx<<' '<<x-1<<endl;
		mx=max(mx,x);
	}
	ans+=ad[0].S, ans%=mod;
	for(int j=0;j<=n;j++) dp[0][j]=1;
	for(int ii=1,i,gi;ii<=n;ii++){ i=ii%2; gi=1-i;
		for(int j=1;j<=n;j++) dp[i][j]=((dp[gi][j]*j%mod)+dp[gi][j-1])%mod;
		ans+=dp[i][ad[ii].F]*ad[ii].S%mod, ans%=mod;
	}
	cout<<ans;
	
	return 0;
}

Compilation message

teams.cpp:27:45: warning: overflow in implicit constant conversion [-Woverflow]
 const ll maxn=1e4+10, lg=20, mod=1e9+7, inf=1e18;
                                             ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Incorrect 5 ms 384 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 354 ms 640 KB Output isn't correct

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 103 ms 528 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 380 ms 640 KB Output isn't correct
2 Halted 0 ms 0 KB -