#include <bits/stdc++.h>
using namespace std;
int dp[2][505000*2+1],arr[301],br = 505000,n,m;
signed main(){
ios_base::sync_with_stdio(false);cin.tie(0);
cin>>m>>n;
for(int i = 0;i<2*m+1;i++){
cin>>arr[i];
}
for(int i = 2*m+1;i>=0;i--){
for(int j = 0;j<=min(i*2*100+505000,505000*2);j++){
if(i==2*m+1){
if(j==n+br){
dp[i&1][j] = 0;
}else{
dp[i&1][j] = -1e9;
}
continue;
}
int ans = -1e9;
for(int e = 0;e<=arr[i];e++){
if(j+e*(i-m)>505000*2)break;
if(j+e*(i-m)<0)continue;
ans = max(ans,dp[!(i&1)][j+e*(i-m)]+e);
}
dp[i&1][j] = ans;
}
}
long long vl = dp[0][505000];
if(vl<0)cout<<"impossible\n";
else cout<<vl<<endl;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
6796 KB |
Output is correct |
2 |
Correct |
9 ms |
6748 KB |
Output is correct |
3 |
Correct |
6 ms |
6748 KB |
Output is correct |
4 |
Correct |
53 ms |
6744 KB |
Output is correct |
5 |
Correct |
66 ms |
6748 KB |
Output is correct |
6 |
Correct |
1434 ms |
6772 KB |
Output is correct |
7 |
Correct |
577 ms |
6744 KB |
Output is correct |
8 |
Incorrect |
1345 ms |
6776 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
6796 KB |
Output is correct |
2 |
Correct |
9 ms |
6748 KB |
Output is correct |
3 |
Correct |
6 ms |
6748 KB |
Output is correct |
4 |
Correct |
53 ms |
6744 KB |
Output is correct |
5 |
Correct |
66 ms |
6748 KB |
Output is correct |
6 |
Correct |
1434 ms |
6772 KB |
Output is correct |
7 |
Correct |
577 ms |
6744 KB |
Output is correct |
8 |
Incorrect |
1345 ms |
6776 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
42 ms |
6748 KB |
Output is correct |
2 |
Incorrect |
41 ms |
6772 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
42 ms |
6748 KB |
Output is correct |
2 |
Incorrect |
41 ms |
6772 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
42 ms |
6748 KB |
Output is correct |
2 |
Incorrect |
41 ms |
6772 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
6796 KB |
Output is correct |
2 |
Correct |
9 ms |
6748 KB |
Output is correct |
3 |
Correct |
6 ms |
6748 KB |
Output is correct |
4 |
Correct |
53 ms |
6744 KB |
Output is correct |
5 |
Correct |
66 ms |
6748 KB |
Output is correct |
6 |
Correct |
1434 ms |
6772 KB |
Output is correct |
7 |
Correct |
577 ms |
6744 KB |
Output is correct |
8 |
Incorrect |
1345 ms |
6776 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
42 ms |
6748 KB |
Output is correct |
2 |
Incorrect |
41 ms |
6772 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
6796 KB |
Output is correct |
2 |
Correct |
9 ms |
6748 KB |
Output is correct |
3 |
Correct |
6 ms |
6748 KB |
Output is correct |
4 |
Correct |
53 ms |
6744 KB |
Output is correct |
5 |
Correct |
66 ms |
6748 KB |
Output is correct |
6 |
Correct |
1434 ms |
6772 KB |
Output is correct |
7 |
Correct |
577 ms |
6744 KB |
Output is correct |
8 |
Incorrect |
1345 ms |
6776 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
42 ms |
6748 KB |
Output is correct |
2 |
Incorrect |
41 ms |
6772 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
10 ms |
6796 KB |
Output is correct |
2 |
Correct |
9 ms |
6748 KB |
Output is correct |
3 |
Correct |
6 ms |
6748 KB |
Output is correct |
4 |
Correct |
53 ms |
6744 KB |
Output is correct |
5 |
Correct |
66 ms |
6748 KB |
Output is correct |
6 |
Correct |
1434 ms |
6772 KB |
Output is correct |
7 |
Correct |
577 ms |
6744 KB |
Output is correct |
8 |
Incorrect |
1345 ms |
6776 KB |
Output isn't correct |
9 |
Halted |
0 ms |
0 KB |
- |