#include <bits/stdc++.h>
using namespace std;
const int MAXN = 1005;
const int K = MAXN * MAXN / 4;
int m, a[MAXN];
int dp[MAXN][MAXN * MAXN / 2];
long long L;
int main(){
ios_base::sync_with_stdio(false); cin.tie(0);
cin >> m >> L;
for(int i = 0; i < 2 * m + 1; ++i) cin >> a[i];
for(int i = 0; i < 2 * m + 1; ++i){
// dp[i][j] = max{dp[i - 1][j - x * (i - m)] + x}
for(int j = 0; j < MAXN * MAXN / 2; ++j){
dp[i][j] = -1e9;
for(int x = 0; x <= a[i]; ++x){
if(j - x * (i - m) >= 0 && j - x * (i - m) < MAXN * MAXN / 2){
if(i) dp[i][j] = max(dp[i][j], dp[i - 1][j - x * (i - m)] + x);
else if(j - x * (i - m) == K) dp[i][j] = max(dp[i][j], x);
}
}
}
}
if(L + K < 0 || L + K >= MAXN * MAXN / 2) cout << "impossible\n";
else if(dp[2 * m][L + K] < 0) cout << "impossible\n";
else cout << dp[2 * m][L + K];
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
10164 KB |
Output is correct |
2 |
Correct |
15 ms |
14132 KB |
Output is correct |
3 |
Correct |
8 ms |
6216 KB |
Output is correct |
4 |
Correct |
69 ms |
41700 KB |
Output is correct |
5 |
Correct |
1388 ms |
199832 KB |
Output is correct |
6 |
Correct |
1497 ms |
199888 KB |
Output is correct |
7 |
Correct |
689 ms |
199916 KB |
Output is correct |
8 |
Correct |
1432 ms |
200016 KB |
Output is correct |
9 |
Correct |
2498 ms |
200012 KB |
Output is correct |
10 |
Correct |
208 ms |
199980 KB |
Output is correct |
11 |
Correct |
186 ms |
199848 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
10164 KB |
Output is correct |
2 |
Correct |
15 ms |
14132 KB |
Output is correct |
3 |
Correct |
8 ms |
6216 KB |
Output is correct |
4 |
Correct |
69 ms |
41700 KB |
Output is correct |
5 |
Correct |
1388 ms |
199832 KB |
Output is correct |
6 |
Correct |
1497 ms |
199888 KB |
Output is correct |
7 |
Correct |
689 ms |
199916 KB |
Output is correct |
8 |
Correct |
1432 ms |
200016 KB |
Output is correct |
9 |
Correct |
2498 ms |
200012 KB |
Output is correct |
10 |
Correct |
208 ms |
199980 KB |
Output is correct |
11 |
Correct |
186 ms |
199848 KB |
Output is correct |
12 |
Correct |
13 ms |
10196 KB |
Output is correct |
13 |
Correct |
18 ms |
14060 KB |
Output is correct |
14 |
Correct |
9 ms |
6144 KB |
Output is correct |
15 |
Correct |
65 ms |
41800 KB |
Output is correct |
16 |
Correct |
1433 ms |
200000 KB |
Output is correct |
17 |
Correct |
1462 ms |
199896 KB |
Output is correct |
18 |
Correct |
676 ms |
199928 KB |
Output is correct |
19 |
Correct |
1447 ms |
199892 KB |
Output is correct |
20 |
Correct |
2499 ms |
199916 KB |
Output is correct |
21 |
Correct |
210 ms |
199984 KB |
Output is correct |
22 |
Correct |
189 ms |
199928 KB |
Output is correct |
23 |
Execution timed out |
5061 ms |
369612 KB |
Time limit exceeded |
24 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
41808 KB |
Output is correct |
2 |
Runtime error |
873 ms |
132548 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
41808 KB |
Output is correct |
2 |
Runtime error |
873 ms |
132548 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
41808 KB |
Output is correct |
2 |
Runtime error |
873 ms |
132548 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
10164 KB |
Output is correct |
2 |
Correct |
15 ms |
14132 KB |
Output is correct |
3 |
Correct |
8 ms |
6216 KB |
Output is correct |
4 |
Correct |
69 ms |
41700 KB |
Output is correct |
5 |
Correct |
1388 ms |
199832 KB |
Output is correct |
6 |
Correct |
1497 ms |
199888 KB |
Output is correct |
7 |
Correct |
689 ms |
199916 KB |
Output is correct |
8 |
Correct |
1432 ms |
200016 KB |
Output is correct |
9 |
Correct |
2498 ms |
200012 KB |
Output is correct |
10 |
Correct |
208 ms |
199980 KB |
Output is correct |
11 |
Correct |
186 ms |
199848 KB |
Output is correct |
12 |
Correct |
67 ms |
41808 KB |
Output is correct |
13 |
Runtime error |
873 ms |
132548 KB |
Execution killed with signal 11 |
14 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
41808 KB |
Output is correct |
2 |
Runtime error |
873 ms |
132548 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
10164 KB |
Output is correct |
2 |
Correct |
15 ms |
14132 KB |
Output is correct |
3 |
Correct |
8 ms |
6216 KB |
Output is correct |
4 |
Correct |
69 ms |
41700 KB |
Output is correct |
5 |
Correct |
1388 ms |
199832 KB |
Output is correct |
6 |
Correct |
1497 ms |
199888 KB |
Output is correct |
7 |
Correct |
689 ms |
199916 KB |
Output is correct |
8 |
Correct |
1432 ms |
200016 KB |
Output is correct |
9 |
Correct |
2498 ms |
200012 KB |
Output is correct |
10 |
Correct |
208 ms |
199980 KB |
Output is correct |
11 |
Correct |
186 ms |
199848 KB |
Output is correct |
12 |
Correct |
13 ms |
10196 KB |
Output is correct |
13 |
Correct |
18 ms |
14060 KB |
Output is correct |
14 |
Correct |
9 ms |
6144 KB |
Output is correct |
15 |
Correct |
65 ms |
41800 KB |
Output is correct |
16 |
Correct |
1433 ms |
200000 KB |
Output is correct |
17 |
Correct |
1462 ms |
199896 KB |
Output is correct |
18 |
Correct |
676 ms |
199928 KB |
Output is correct |
19 |
Correct |
1447 ms |
199892 KB |
Output is correct |
20 |
Correct |
2499 ms |
199916 KB |
Output is correct |
21 |
Correct |
210 ms |
199984 KB |
Output is correct |
22 |
Correct |
189 ms |
199928 KB |
Output is correct |
23 |
Execution timed out |
5061 ms |
369612 KB |
Time limit exceeded |
24 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
67 ms |
41808 KB |
Output is correct |
2 |
Runtime error |
873 ms |
132548 KB |
Execution killed with signal 11 |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
13 ms |
10164 KB |
Output is correct |
2 |
Correct |
15 ms |
14132 KB |
Output is correct |
3 |
Correct |
8 ms |
6216 KB |
Output is correct |
4 |
Correct |
69 ms |
41700 KB |
Output is correct |
5 |
Correct |
1388 ms |
199832 KB |
Output is correct |
6 |
Correct |
1497 ms |
199888 KB |
Output is correct |
7 |
Correct |
689 ms |
199916 KB |
Output is correct |
8 |
Correct |
1432 ms |
200016 KB |
Output is correct |
9 |
Correct |
2498 ms |
200012 KB |
Output is correct |
10 |
Correct |
208 ms |
199980 KB |
Output is correct |
11 |
Correct |
186 ms |
199848 KB |
Output is correct |
12 |
Correct |
13 ms |
10196 KB |
Output is correct |
13 |
Correct |
18 ms |
14060 KB |
Output is correct |
14 |
Correct |
9 ms |
6144 KB |
Output is correct |
15 |
Correct |
65 ms |
41800 KB |
Output is correct |
16 |
Correct |
1433 ms |
200000 KB |
Output is correct |
17 |
Correct |
1462 ms |
199896 KB |
Output is correct |
18 |
Correct |
676 ms |
199928 KB |
Output is correct |
19 |
Correct |
1447 ms |
199892 KB |
Output is correct |
20 |
Correct |
2499 ms |
199916 KB |
Output is correct |
21 |
Correct |
210 ms |
199984 KB |
Output is correct |
22 |
Correct |
189 ms |
199928 KB |
Output is correct |
23 |
Execution timed out |
5061 ms |
369612 KB |
Time limit exceeded |
24 |
Halted |
0 ms |
0 KB |
- |