// Knapsack DP is harder than FFT.
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii; typedef pair<ll, ll> pll;
#define ff first
#define ss second
#define pb emplace_back
#define FOR(i,n) for(int i = 0; i < (n); ++i)
#define FOO(i,a,b) for(int i = (a); i <= (b); ++i)
#define AI(x) begin(x),end(x)
template<typename I> bool chmax(I &a, I b){ return a < b ? ( a = b, true ) : false;}
template<typename I> bool chmin(I &a, I b){ return a > b ? ( a = b, true ) : false;}
#ifdef OWO
#define debug(args...) LKJ("[ " + string(#args) + " ]", args)
void LKJ(){cerr<<endl;}
template<class I, class...T> void LKJ(I&&x, T&&...t){ cerr<<x<<", ", LKJ(t...);}
template<class I> void DE(I a, I b){ while(a < b) cerr<<*a<<" \n"[next(a) == b], ++a;}
#else
#define debug(...) 0
#define DE(...) 0
#endif
const int N = 2002;
int n, q;
int h[N];
bool g[N][N];
int dp[N][N];
int32_t main(){
ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
cin >> n;
assert(n < N);
FOR(i,n){
int l, r; cin >> h[i] >> l >> r;
FOR(j,n){
int d = abs(i - j);
if(l <= d and d <= r) g[i][j] = true;
}
}
FOR(i,n) FOO(j,i+1,n-1){
if(!g[i][j] or !g[j][i]){
dp[i][j] = dp[j][i] = -1;
continue;
}
dp[i][j] = abs(h[i] - h[j]);
}
FOO(len,3,n){
FOR(l,n){
int r = l + len - 1;
if(r >= n) continue;
chmax(dp[l][r], dp[l+1][r]);
chmax(dp[l][r], dp[l][r-1]);
}
}
cin >> q;
FOR(_,q){
int l, r; cin >> l >> r;
--l, --r;
cout << dp[l][r] << '\n';
}
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1004 KB |
Output is correct |
2 |
Correct |
2 ms |
2412 KB |
Output is correct |
3 |
Correct |
2 ms |
1900 KB |
Output is correct |
4 |
Correct |
2 ms |
2412 KB |
Output is correct |
5 |
Correct |
2 ms |
2028 KB |
Output is correct |
6 |
Correct |
3 ms |
2412 KB |
Output is correct |
7 |
Correct |
2 ms |
2284 KB |
Output is correct |
8 |
Correct |
3 ms |
2412 KB |
Output is correct |
9 |
Correct |
1 ms |
1004 KB |
Output is correct |
10 |
Correct |
3 ms |
2560 KB |
Output is correct |
11 |
Correct |
1 ms |
748 KB |
Output is correct |
12 |
Correct |
2 ms |
2412 KB |
Output is correct |
13 |
Correct |
2 ms |
2028 KB |
Output is correct |
14 |
Correct |
2 ms |
2156 KB |
Output is correct |
15 |
Correct |
2 ms |
2028 KB |
Output is correct |
16 |
Correct |
2 ms |
2028 KB |
Output is correct |
17 |
Correct |
2 ms |
2156 KB |
Output is correct |
18 |
Correct |
2 ms |
2028 KB |
Output is correct |
19 |
Correct |
2 ms |
2176 KB |
Output is correct |
20 |
Correct |
2 ms |
2156 KB |
Output is correct |
21 |
Correct |
2 ms |
2028 KB |
Output is correct |
22 |
Correct |
2 ms |
2156 KB |
Output is correct |
23 |
Correct |
2 ms |
2028 KB |
Output is correct |
24 |
Correct |
2 ms |
2156 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1004 KB |
Output is correct |
2 |
Correct |
2 ms |
2412 KB |
Output is correct |
3 |
Correct |
2 ms |
1900 KB |
Output is correct |
4 |
Correct |
2 ms |
2412 KB |
Output is correct |
5 |
Correct |
2 ms |
2028 KB |
Output is correct |
6 |
Correct |
3 ms |
2412 KB |
Output is correct |
7 |
Correct |
2 ms |
2284 KB |
Output is correct |
8 |
Correct |
3 ms |
2412 KB |
Output is correct |
9 |
Correct |
1 ms |
1004 KB |
Output is correct |
10 |
Correct |
3 ms |
2560 KB |
Output is correct |
11 |
Correct |
1 ms |
748 KB |
Output is correct |
12 |
Correct |
2 ms |
2412 KB |
Output is correct |
13 |
Correct |
2 ms |
2028 KB |
Output is correct |
14 |
Correct |
2 ms |
2156 KB |
Output is correct |
15 |
Correct |
2 ms |
2028 KB |
Output is correct |
16 |
Correct |
2 ms |
2028 KB |
Output is correct |
17 |
Correct |
2 ms |
2156 KB |
Output is correct |
18 |
Correct |
2 ms |
2028 KB |
Output is correct |
19 |
Correct |
2 ms |
2176 KB |
Output is correct |
20 |
Correct |
2 ms |
2156 KB |
Output is correct |
21 |
Correct |
2 ms |
2028 KB |
Output is correct |
22 |
Correct |
2 ms |
2156 KB |
Output is correct |
23 |
Correct |
2 ms |
2028 KB |
Output is correct |
24 |
Correct |
2 ms |
2156 KB |
Output is correct |
25 |
Correct |
59 ms |
9580 KB |
Output is correct |
26 |
Correct |
58 ms |
19868 KB |
Output is correct |
27 |
Correct |
109 ms |
17968 KB |
Output is correct |
28 |
Correct |
121 ms |
23276 KB |
Output is correct |
29 |
Correct |
53 ms |
12012 KB |
Output is correct |
30 |
Correct |
97 ms |
22176 KB |
Output is correct |
31 |
Correct |
62 ms |
5100 KB |
Output is correct |
32 |
Correct |
117 ms |
23404 KB |
Output is correct |
33 |
Correct |
82 ms |
15340 KB |
Output is correct |
34 |
Correct |
81 ms |
21456 KB |
Output is correct |
35 |
Correct |
96 ms |
18284 KB |
Output is correct |
36 |
Correct |
136 ms |
23552 KB |
Output is correct |
37 |
Correct |
84 ms |
20972 KB |
Output is correct |
38 |
Correct |
111 ms |
22124 KB |
Output is correct |
39 |
Correct |
55 ms |
19948 KB |
Output is correct |
40 |
Correct |
111 ms |
22252 KB |
Output is correct |
41 |
Correct |
98 ms |
21484 KB |
Output is correct |
42 |
Correct |
124 ms |
22252 KB |
Output is correct |
43 |
Correct |
64 ms |
20460 KB |
Output is correct |
44 |
Correct |
114 ms |
22124 KB |
Output is correct |
45 |
Correct |
52 ms |
20076 KB |
Output is correct |
46 |
Correct |
110 ms |
22124 KB |
Output is correct |
47 |
Correct |
61 ms |
20204 KB |
Output is correct |
48 |
Correct |
116 ms |
22156 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Runtime error |
2 ms |
492 KB |
Execution killed with signal 6 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
1 ms |
1004 KB |
Output is correct |
2 |
Correct |
2 ms |
2412 KB |
Output is correct |
3 |
Correct |
2 ms |
1900 KB |
Output is correct |
4 |
Correct |
2 ms |
2412 KB |
Output is correct |
5 |
Correct |
2 ms |
2028 KB |
Output is correct |
6 |
Correct |
3 ms |
2412 KB |
Output is correct |
7 |
Correct |
2 ms |
2284 KB |
Output is correct |
8 |
Correct |
3 ms |
2412 KB |
Output is correct |
9 |
Correct |
1 ms |
1004 KB |
Output is correct |
10 |
Correct |
3 ms |
2560 KB |
Output is correct |
11 |
Correct |
1 ms |
748 KB |
Output is correct |
12 |
Correct |
2 ms |
2412 KB |
Output is correct |
13 |
Correct |
2 ms |
2028 KB |
Output is correct |
14 |
Correct |
2 ms |
2156 KB |
Output is correct |
15 |
Correct |
2 ms |
2028 KB |
Output is correct |
16 |
Correct |
2 ms |
2028 KB |
Output is correct |
17 |
Correct |
2 ms |
2156 KB |
Output is correct |
18 |
Correct |
2 ms |
2028 KB |
Output is correct |
19 |
Correct |
2 ms |
2176 KB |
Output is correct |
20 |
Correct |
2 ms |
2156 KB |
Output is correct |
21 |
Correct |
2 ms |
2028 KB |
Output is correct |
22 |
Correct |
2 ms |
2156 KB |
Output is correct |
23 |
Correct |
2 ms |
2028 KB |
Output is correct |
24 |
Correct |
2 ms |
2156 KB |
Output is correct |
25 |
Correct |
59 ms |
9580 KB |
Output is correct |
26 |
Correct |
58 ms |
19868 KB |
Output is correct |
27 |
Correct |
109 ms |
17968 KB |
Output is correct |
28 |
Correct |
121 ms |
23276 KB |
Output is correct |
29 |
Correct |
53 ms |
12012 KB |
Output is correct |
30 |
Correct |
97 ms |
22176 KB |
Output is correct |
31 |
Correct |
62 ms |
5100 KB |
Output is correct |
32 |
Correct |
117 ms |
23404 KB |
Output is correct |
33 |
Correct |
82 ms |
15340 KB |
Output is correct |
34 |
Correct |
81 ms |
21456 KB |
Output is correct |
35 |
Correct |
96 ms |
18284 KB |
Output is correct |
36 |
Correct |
136 ms |
23552 KB |
Output is correct |
37 |
Correct |
84 ms |
20972 KB |
Output is correct |
38 |
Correct |
111 ms |
22124 KB |
Output is correct |
39 |
Correct |
55 ms |
19948 KB |
Output is correct |
40 |
Correct |
111 ms |
22252 KB |
Output is correct |
41 |
Correct |
98 ms |
21484 KB |
Output is correct |
42 |
Correct |
124 ms |
22252 KB |
Output is correct |
43 |
Correct |
64 ms |
20460 KB |
Output is correct |
44 |
Correct |
114 ms |
22124 KB |
Output is correct |
45 |
Correct |
52 ms |
20076 KB |
Output is correct |
46 |
Correct |
110 ms |
22124 KB |
Output is correct |
47 |
Correct |
61 ms |
20204 KB |
Output is correct |
48 |
Correct |
116 ms |
22156 KB |
Output is correct |
49 |
Runtime error |
2 ms |
492 KB |
Execution killed with signal 6 |
50 |
Halted |
0 ms |
0 KB |
- |