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Submission #93589

# Submission time Handle Problem Language Result Execution time Memory
93589 2019-01-09T23:01:28 Z abood101 Calvinball championship (CEOI15_teams) C++17
20 / 100
 1000 ms 768 KB 
#include <bits/stdc++.h>
using namespace std;
 
typedef pair<int,int > pp;
typedef long long ll;
 
int const N=3e5+10,oo=1e9,M=1e6;
ll const OO=1e18;
double const eps=1e-6,PI=acos(-1);
int mod=M+7;

int n,aa[N],dp[2][10001][2],dp1[2][10001];

int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    int mx=0;
    for(int i=0;i<n;i++)cin>>aa[i],mx=max(mx,aa[i]);
    int f=0,an=0;
    dp1[f][1]=1;
    dp[f][1][0]=1;
    for(int i=1,un=1;i<n;i++){
        f=1-f;
        un=max(un,aa[i]);
        dp[f][un][0]=1;
        for(int j=1;j<=i+1&&j<mx;j++){
            dp1[f][j]=(dp1[!f][j]*1LL*j+dp1[!f][j-1])%mod;
            dp[f][j][1]=(dp[!f][j][1]*1LL*j+dp[!f][j][0]*1LL*min(j,aa[i]-1)+dp[!f][j-1][1])%mod;
//            cout<<j<<' '<<dp[f][j][1]<<' '<<dp[!f][j][0]<<endl;
            dp1[!f][j-1]=0;
            dp[!f][j-1][1]=dp[!f][j-1][0]=0;
        }
 //       cout<<endl;        
        dp[f][mx][1]=(dp[!f][mx][1]*1LL*mx+dp[!f][mx][0]*1LL*min(mx,aa[i]-1)+dp[!f][mx-1][1])%mod;
        dp1[!f][mx-1]=0;
        dp[!f][mx][1]=dp[!f][mx-1][1]=0;
        dp[!f][mx][0]=dp[!f][mx-1][0]=0;
    }
    for(int i=1;i<mx;i++){
        an+=dp1[f][i];
        an%=mod;
    }
    an+=dp[f][mx][1]+1;
    an%=mod;
    cout<<an<<'\n';
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 1 ms 376 KB Output is correct
4 Correct 1 ms 248 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Incorrect 6 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

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

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1030 ms 768 KB Time limit exceeded

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 12 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 32 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -