Submission #54959

# Submission time Handle Problem Language Result Execution time Memory
54959 2018-07-05T14:37:11 Z Diuven Calvinball championship (CEOI15_teams) C++11
10 / 100
779 ms 784 KB
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
const int MX=10010, inf=2e9, MOD=1000007;

int n, A[MX], D[2][MX], mx[MX], ans=1;

int main(){
    ios::sync_with_stdio(0); cin.tie(0);
    cin>>n;
    for(int i=1; i<=n; i++) cin>>A[i];
    for(int i=1; i<=n; i++) mx[i]=max(mx[i-1], A[i]);

    for(int j=1; j<=n; j++) D[n&1][j]=1;

    for(int i=n; i>=1; i--){
        for(int j=1; j<A[i]; j++)
            ans=(ans+D[i&1][max(mx[i-1], j)])%MOD;
        D[(i&1)^1][1]=(D[i&1][1]+D[i&1][2])%MOD;
        for(int j=2; j<=n; j++) D[(i&1)^1][j]=(D[(i&1)^1][j-1]+D[i&1][j+1])%MOD;
    }

    cout<<ans;
    return 0;
}
# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB Output is correct
2 Correct 2 ms 356 KB Output is correct
3 Correct 2 ms 392 KB Output is correct
4 Correct 2 ms 468 KB Output is correct
5 Correct 3 ms 468 KB Output is correct
6 Correct 2 ms 544 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 3 ms 544 KB Output is correct
2 Incorrect 2 ms 544 KB Output isn't correct
3 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 544 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 620 KB Output isn't correct
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 620 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 620 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 620 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 779 ms 784 KB Output isn't correct
# Verdict Execution time Memory Grader output
1 Incorrect 140 ms 784 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 523 ms 784 KB Output isn't correct
2 Halted 0 ms 0 KB -