#include <bits/stdc++.h>
using namespace std;
int N;
int arr[1005];
long long dp[1005][1005];
const long long MOD = 1000007;
long long solve(int n, int m, bool border){
if(n == N+1){
return 1;
}
if(!border && dp[n][m]){
return dp[n][m];
}
int lim = m+1;
if(border){
lim = arr[n];
}
long long ans = 0;
for(int i = 1; i<=lim; i++){
ans += solve(n+1, i, border && (lim == arr[n]));
}
ans %= MOD;
if(!border){
dp[n][m] = ans%MOD;
}
return ans;
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
cin >> N;
for(int i = 1; i<=N; i++){
cin >> arr[i];
}
cout << solve(1, 0, 1);
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
384 KB |
Output is correct |
2 |
Correct |
0 ms |
384 KB |
Output is correct |
3 |
Incorrect |
0 ms |
384 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
384 KB |
Output is correct |
2 |
Incorrect |
1 ms |
396 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1096 ms |
512 KB |
Time limit exceeded |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1084 ms |
384 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1089 ms |
384 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1083 ms |
384 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1097 ms |
512 KB |
Time limit exceeded |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Incorrect |
1 ms |
384 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Execution timed out |
1076 ms |
384 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |