# |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
994671 |
2024-06-08T03:30:34 Z |
hmm789 |
Trains (BOI24_trains) |
C++14 |
|
718 ms |
131924 KB |
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define MOD 1000000007
const int B = 320;
int sm[B][B][B];
int32_t main() {
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
int n;
cin >> n;
int d[n], x[n], dp[n];
for(int i = 0; i < n; i++) cin >> d[i] >> x[i];
for(int i = n-1; i >= 0; i--) {
dp[i] = 1;
if(d[i] == 0) {
} else if(d[i] < B) {
int mn = min(i+d[i]*x[i], n-1);
while(mn % d[i] != i%d[i]) mn--;
int lblk = i/B, rblk = mn/B;
if(rblk-lblk < 2) {
for(int j = 1; j <= x[i]; j++) {
if(i+j*d[i] >= n) break;
dp[i] += dp[i+j*d[i]];
dp[i] %= MOD;
}
} else {
for(int j = lblk+1; j < rblk; j++) {
dp[i] += sm[d[i]][i%d[i]][j];
dp[i] %= MOD;
}
int st = (lblk+1)*B-1, ed = rblk*B;
st = st-st%d[i]+i%d[i];
if(st >= (lblk+1)*B) st -= d[i];
for(; st > i; st -= d[i]) {
dp[i] += dp[st];
dp[i] %= MOD;
}
ed = ed-ed%d[i]+i%d[i];
if(ed < rblk*B) ed += d[i];
for(; ed <= mn; ed += d[i]) {
dp[i] += dp[ed];
dp[i] %= MOD;
}
}
} else {
for(int j = 1; j <= x[i]; j++) {
if(i+j*d[i] >= n) break;
dp[i] += dp[i+j*d[i]];
dp[i] %= MOD;
}
}
for(int j = 1; j < B; j++) {
sm[j][i%j][i/B] += dp[i];
sm[j][i%j][i/B] %= MOD;
}
}
cout << dp[0];
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4700 KB |
Output is correct |
2 |
Correct |
3 ms |
7260 KB |
Output is correct |
3 |
Correct |
4 ms |
10844 KB |
Output is correct |
4 |
Correct |
3 ms |
5772 KB |
Output is correct |
5 |
Correct |
6 ms |
13404 KB |
Output is correct |
6 |
Correct |
6 ms |
13304 KB |
Output is correct |
7 |
Correct |
2 ms |
2140 KB |
Output is correct |
8 |
Correct |
2 ms |
2140 KB |
Output is correct |
9 |
Correct |
2 ms |
2140 KB |
Output is correct |
10 |
Correct |
2 ms |
2140 KB |
Output is correct |
11 |
Correct |
5 ms |
13404 KB |
Output is correct |
12 |
Correct |
6 ms |
13404 KB |
Output is correct |
13 |
Correct |
6 ms |
13404 KB |
Output is correct |
14 |
Correct |
5 ms |
13400 KB |
Output is correct |
15 |
Correct |
6 ms |
13384 KB |
Output is correct |
16 |
Correct |
6 ms |
13404 KB |
Output is correct |
17 |
Correct |
5 ms |
13404 KB |
Output is correct |
18 |
Correct |
6 ms |
13404 KB |
Output is correct |
19 |
Correct |
6 ms |
13404 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4700 KB |
Output is correct |
2 |
Correct |
3 ms |
7260 KB |
Output is correct |
3 |
Correct |
4 ms |
10844 KB |
Output is correct |
4 |
Correct |
3 ms |
5772 KB |
Output is correct |
5 |
Correct |
6 ms |
13404 KB |
Output is correct |
6 |
Correct |
6 ms |
13304 KB |
Output is correct |
7 |
Correct |
2 ms |
2140 KB |
Output is correct |
8 |
Correct |
2 ms |
2140 KB |
Output is correct |
9 |
Correct |
2 ms |
2140 KB |
Output is correct |
10 |
Correct |
2 ms |
2140 KB |
Output is correct |
11 |
Correct |
5 ms |
13404 KB |
Output is correct |
12 |
Correct |
6 ms |
13404 KB |
Output is correct |
13 |
Correct |
6 ms |
13404 KB |
Output is correct |
14 |
Correct |
5 ms |
13400 KB |
Output is correct |
15 |
Correct |
6 ms |
13384 KB |
Output is correct |
16 |
Correct |
6 ms |
13404 KB |
Output is correct |
17 |
Correct |
5 ms |
13404 KB |
Output is correct |
18 |
Correct |
6 ms |
13404 KB |
Output is correct |
19 |
Correct |
6 ms |
13404 KB |
Output is correct |
20 |
Correct |
80 ms |
129028 KB |
Output is correct |
21 |
Correct |
57 ms |
128852 KB |
Output is correct |
22 |
Correct |
87 ms |
129120 KB |
Output is correct |
23 |
Correct |
83 ms |
128924 KB |
Output is correct |
24 |
Correct |
62 ms |
128872 KB |
Output is correct |
25 |
Correct |
75 ms |
129108 KB |
Output is correct |
26 |
Correct |
64 ms |
128852 KB |
Output is correct |
27 |
Correct |
94 ms |
128972 KB |
Output is correct |
28 |
Correct |
98 ms |
129164 KB |
Output is correct |
29 |
Correct |
99 ms |
129016 KB |
Output is correct |
30 |
Correct |
85 ms |
129108 KB |
Output is correct |
31 |
Correct |
92 ms |
129104 KB |
Output is correct |
32 |
Correct |
95 ms |
129104 KB |
Output is correct |
33 |
Correct |
86 ms |
129104 KB |
Output is correct |
34 |
Correct |
77 ms |
129104 KB |
Output is correct |
35 |
Correct |
88 ms |
129164 KB |
Output is correct |
36 |
Correct |
91 ms |
129104 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
13656 KB |
Output is correct |
2 |
Correct |
81 ms |
128996 KB |
Output is correct |
3 |
Correct |
66 ms |
128848 KB |
Output is correct |
4 |
Correct |
93 ms |
129108 KB |
Output is correct |
5 |
Correct |
400 ms |
131156 KB |
Output is correct |
6 |
Correct |
692 ms |
131912 KB |
Output is correct |
7 |
Correct |
700 ms |
131824 KB |
Output is correct |
8 |
Correct |
2 ms |
2136 KB |
Output is correct |
9 |
Correct |
2 ms |
2136 KB |
Output is correct |
10 |
Correct |
6 ms |
13404 KB |
Output is correct |
11 |
Correct |
92 ms |
129132 KB |
Output is correct |
12 |
Correct |
711 ms |
131668 KB |
Output is correct |
13 |
Correct |
8 ms |
13400 KB |
Output is correct |
14 |
Correct |
102 ms |
129040 KB |
Output is correct |
15 |
Correct |
708 ms |
131892 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
302 ms |
130268 KB |
Output is correct |
2 |
Correct |
256 ms |
129876 KB |
Output is correct |
3 |
Correct |
663 ms |
131824 KB |
Output is correct |
4 |
Correct |
461 ms |
130900 KB |
Output is correct |
5 |
Correct |
2 ms |
2136 KB |
Output is correct |
6 |
Correct |
6 ms |
13404 KB |
Output is correct |
7 |
Correct |
97 ms |
129136 KB |
Output is correct |
8 |
Correct |
718 ms |
131916 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
3 ms |
4700 KB |
Output is correct |
2 |
Correct |
3 ms |
7260 KB |
Output is correct |
3 |
Correct |
4 ms |
10844 KB |
Output is correct |
4 |
Correct |
3 ms |
5772 KB |
Output is correct |
5 |
Correct |
6 ms |
13404 KB |
Output is correct |
6 |
Correct |
6 ms |
13304 KB |
Output is correct |
7 |
Correct |
2 ms |
2140 KB |
Output is correct |
8 |
Correct |
2 ms |
2140 KB |
Output is correct |
9 |
Correct |
2 ms |
2140 KB |
Output is correct |
10 |
Correct |
2 ms |
2140 KB |
Output is correct |
11 |
Correct |
5 ms |
13404 KB |
Output is correct |
12 |
Correct |
6 ms |
13404 KB |
Output is correct |
13 |
Correct |
6 ms |
13404 KB |
Output is correct |
14 |
Correct |
5 ms |
13400 KB |
Output is correct |
15 |
Correct |
6 ms |
13384 KB |
Output is correct |
16 |
Correct |
6 ms |
13404 KB |
Output is correct |
17 |
Correct |
5 ms |
13404 KB |
Output is correct |
18 |
Correct |
6 ms |
13404 KB |
Output is correct |
19 |
Correct |
6 ms |
13404 KB |
Output is correct |
20 |
Correct |
80 ms |
129028 KB |
Output is correct |
21 |
Correct |
57 ms |
128852 KB |
Output is correct |
22 |
Correct |
87 ms |
129120 KB |
Output is correct |
23 |
Correct |
83 ms |
128924 KB |
Output is correct |
24 |
Correct |
62 ms |
128872 KB |
Output is correct |
25 |
Correct |
75 ms |
129108 KB |
Output is correct |
26 |
Correct |
64 ms |
128852 KB |
Output is correct |
27 |
Correct |
94 ms |
128972 KB |
Output is correct |
28 |
Correct |
98 ms |
129164 KB |
Output is correct |
29 |
Correct |
99 ms |
129016 KB |
Output is correct |
30 |
Correct |
85 ms |
129108 KB |
Output is correct |
31 |
Correct |
92 ms |
129104 KB |
Output is correct |
32 |
Correct |
95 ms |
129104 KB |
Output is correct |
33 |
Correct |
86 ms |
129104 KB |
Output is correct |
34 |
Correct |
77 ms |
129104 KB |
Output is correct |
35 |
Correct |
88 ms |
129164 KB |
Output is correct |
36 |
Correct |
91 ms |
129104 KB |
Output is correct |
37 |
Correct |
6 ms |
13656 KB |
Output is correct |
38 |
Correct |
81 ms |
128996 KB |
Output is correct |
39 |
Correct |
66 ms |
128848 KB |
Output is correct |
40 |
Correct |
93 ms |
129108 KB |
Output is correct |
41 |
Correct |
400 ms |
131156 KB |
Output is correct |
42 |
Correct |
692 ms |
131912 KB |
Output is correct |
43 |
Correct |
700 ms |
131824 KB |
Output is correct |
44 |
Correct |
2 ms |
2136 KB |
Output is correct |
45 |
Correct |
2 ms |
2136 KB |
Output is correct |
46 |
Correct |
6 ms |
13404 KB |
Output is correct |
47 |
Correct |
92 ms |
129132 KB |
Output is correct |
48 |
Correct |
711 ms |
131668 KB |
Output is correct |
49 |
Correct |
8 ms |
13400 KB |
Output is correct |
50 |
Correct |
102 ms |
129040 KB |
Output is correct |
51 |
Correct |
708 ms |
131892 KB |
Output is correct |
52 |
Correct |
302 ms |
130268 KB |
Output is correct |
53 |
Correct |
256 ms |
129876 KB |
Output is correct |
54 |
Correct |
663 ms |
131824 KB |
Output is correct |
55 |
Correct |
461 ms |
130900 KB |
Output is correct |
56 |
Correct |
2 ms |
2136 KB |
Output is correct |
57 |
Correct |
6 ms |
13404 KB |
Output is correct |
58 |
Correct |
97 ms |
129136 KB |
Output is correct |
59 |
Correct |
718 ms |
131916 KB |
Output is correct |
60 |
Correct |
468 ms |
131156 KB |
Output is correct |
61 |
Correct |
598 ms |
131920 KB |
Output is correct |
62 |
Correct |
552 ms |
131916 KB |
Output is correct |
63 |
Correct |
628 ms |
131816 KB |
Output is correct |
64 |
Correct |
502 ms |
131872 KB |
Output is correct |
65 |
Correct |
565 ms |
131916 KB |
Output is correct |
66 |
Correct |
586 ms |
131924 KB |
Output is correct |
67 |
Correct |
509 ms |
131756 KB |
Output is correct |
68 |
Correct |
593 ms |
131824 KB |
Output is correct |
69 |
Correct |
533 ms |
131664 KB |
Output is correct |
70 |
Correct |
527 ms |
131672 KB |
Output is correct |
71 |
Correct |
511 ms |
131920 KB |
Output is correct |
72 |
Correct |
607 ms |
131916 KB |
Output is correct |