#include <bits/stdc++.h>
using namespace std;
#define int long long
int const N=1e5+5;
int const mod=1e9+7;
int dp[N],suf[N],d[N],x[N];
int n;
void solve(){
dp[n]=1;
suf[n]=1;
for(int i=n-1;i>=1;i--){
dp[i]=1;
if(d[i]==0){
suf[i]=1;
continue;
}
for(int j=i+d[i];j<=n;j+=d[i]){
if(d[j]==d[i]){
dp[i]=(dp[i]+suf[j])%mod;
break;
}
dp[i]=(dp[i]+dp[j])%mod;
}
suf[i]=(dp[i] + (mod-1))%mod;
for(int j=i+(d[i]*(x[i]+1)); j<=n;j+=d[i]){
if(d[i]==d[j]){
dp[i]=((dp[i]-suf[j])+mod)%mod;
break;
}
dp[i]=((dp[i]-dp[j])+mod)%mod;
}
suf[i]=(dp[i]+suf[i])%mod;
}
// for (int i = 1; i <=n; ++i)
// cout<<dp[i]<<' '<<suf[i]<<endl;
// for(int i=1;i<=n;i++)
// cout<<dp[i]<<endl;
cout<<dp[1]<<endl;
}
signed main(){
cin>>n;
bool b=1;
for (int i = 1; i <=n; ++i){
cin>>d[i]>>x[i];
if(d[i]!=1)
b=0;
}
solve();
return 0;
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:46:7: warning: variable 'b' set but not used [-Wunused-but-set-variable]
46 | bool b=1;
| ^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Correct |
0 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
0 ms |
2396 KB |
Output is correct |
11 |
Correct |
0 ms |
2396 KB |
Output is correct |
12 |
Correct |
0 ms |
2396 KB |
Output is correct |
13 |
Correct |
0 ms |
2396 KB |
Output is correct |
14 |
Correct |
0 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
0 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
0 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Correct |
0 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
0 ms |
2396 KB |
Output is correct |
11 |
Correct |
0 ms |
2396 KB |
Output is correct |
12 |
Correct |
0 ms |
2396 KB |
Output is correct |
13 |
Correct |
0 ms |
2396 KB |
Output is correct |
14 |
Correct |
0 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
0 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
0 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
3 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2504 KB |
Output is correct |
22 |
Correct |
7 ms |
2652 KB |
Output is correct |
23 |
Correct |
2 ms |
2396 KB |
Output is correct |
24 |
Correct |
2 ms |
2396 KB |
Output is correct |
25 |
Correct |
4 ms |
2396 KB |
Output is correct |
26 |
Correct |
1 ms |
2396 KB |
Output is correct |
27 |
Correct |
2 ms |
2396 KB |
Output is correct |
28 |
Correct |
3 ms |
2652 KB |
Output is correct |
29 |
Correct |
3 ms |
2648 KB |
Output is correct |
30 |
Correct |
4 ms |
2552 KB |
Output is correct |
31 |
Correct |
6 ms |
2652 KB |
Output is correct |
32 |
Correct |
3 ms |
2652 KB |
Output is correct |
33 |
Correct |
5 ms |
2652 KB |
Output is correct |
34 |
Correct |
3 ms |
2540 KB |
Output is correct |
35 |
Correct |
2 ms |
2652 KB |
Output is correct |
36 |
Correct |
4 ms |
2408 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
2 ms |
2396 KB |
Output is correct |
3 |
Correct |
2 ms |
2396 KB |
Output is correct |
4 |
Correct |
2 ms |
2396 KB |
Output is correct |
5 |
Correct |
11 ms |
3192 KB |
Output is correct |
6 |
Correct |
22 ms |
3444 KB |
Output is correct |
7 |
Correct |
26 ms |
3412 KB |
Output is correct |
8 |
Correct |
0 ms |
2392 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
0 ms |
2396 KB |
Output is correct |
11 |
Correct |
3 ms |
2652 KB |
Output is correct |
12 |
Correct |
28 ms |
3420 KB |
Output is correct |
13 |
Correct |
1 ms |
2396 KB |
Output is correct |
14 |
Correct |
3 ms |
2532 KB |
Output is correct |
15 |
Correct |
27 ms |
3420 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
28 ms |
2904 KB |
Output is correct |
2 |
Correct |
12 ms |
2928 KB |
Output is correct |
3 |
Correct |
28 ms |
3416 KB |
Output is correct |
4 |
Correct |
21 ms |
3156 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
6 |
Correct |
0 ms |
2400 KB |
Output is correct |
7 |
Correct |
6 ms |
2656 KB |
Output is correct |
8 |
Correct |
36 ms |
3436 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
2396 KB |
Output is correct |
2 |
Correct |
0 ms |
2396 KB |
Output is correct |
3 |
Correct |
0 ms |
2396 KB |
Output is correct |
4 |
Correct |
0 ms |
2396 KB |
Output is correct |
5 |
Correct |
0 ms |
2396 KB |
Output is correct |
6 |
Correct |
0 ms |
2396 KB |
Output is correct |
7 |
Correct |
0 ms |
2396 KB |
Output is correct |
8 |
Correct |
0 ms |
2396 KB |
Output is correct |
9 |
Correct |
0 ms |
2396 KB |
Output is correct |
10 |
Correct |
0 ms |
2396 KB |
Output is correct |
11 |
Correct |
0 ms |
2396 KB |
Output is correct |
12 |
Correct |
0 ms |
2396 KB |
Output is correct |
13 |
Correct |
0 ms |
2396 KB |
Output is correct |
14 |
Correct |
0 ms |
2396 KB |
Output is correct |
15 |
Correct |
0 ms |
2396 KB |
Output is correct |
16 |
Correct |
0 ms |
2396 KB |
Output is correct |
17 |
Correct |
1 ms |
2396 KB |
Output is correct |
18 |
Correct |
0 ms |
2396 KB |
Output is correct |
19 |
Correct |
1 ms |
2396 KB |
Output is correct |
20 |
Correct |
3 ms |
2396 KB |
Output is correct |
21 |
Correct |
1 ms |
2504 KB |
Output is correct |
22 |
Correct |
7 ms |
2652 KB |
Output is correct |
23 |
Correct |
2 ms |
2396 KB |
Output is correct |
24 |
Correct |
2 ms |
2396 KB |
Output is correct |
25 |
Correct |
4 ms |
2396 KB |
Output is correct |
26 |
Correct |
1 ms |
2396 KB |
Output is correct |
27 |
Correct |
2 ms |
2396 KB |
Output is correct |
28 |
Correct |
3 ms |
2652 KB |
Output is correct |
29 |
Correct |
3 ms |
2648 KB |
Output is correct |
30 |
Correct |
4 ms |
2552 KB |
Output is correct |
31 |
Correct |
6 ms |
2652 KB |
Output is correct |
32 |
Correct |
3 ms |
2652 KB |
Output is correct |
33 |
Correct |
5 ms |
2652 KB |
Output is correct |
34 |
Correct |
3 ms |
2540 KB |
Output is correct |
35 |
Correct |
2 ms |
2652 KB |
Output is correct |
36 |
Correct |
4 ms |
2408 KB |
Output is correct |
37 |
Correct |
0 ms |
2396 KB |
Output is correct |
38 |
Correct |
2 ms |
2396 KB |
Output is correct |
39 |
Correct |
2 ms |
2396 KB |
Output is correct |
40 |
Correct |
2 ms |
2396 KB |
Output is correct |
41 |
Correct |
11 ms |
3192 KB |
Output is correct |
42 |
Correct |
22 ms |
3444 KB |
Output is correct |
43 |
Correct |
26 ms |
3412 KB |
Output is correct |
44 |
Correct |
0 ms |
2392 KB |
Output is correct |
45 |
Correct |
0 ms |
2396 KB |
Output is correct |
46 |
Correct |
0 ms |
2396 KB |
Output is correct |
47 |
Correct |
3 ms |
2652 KB |
Output is correct |
48 |
Correct |
28 ms |
3420 KB |
Output is correct |
49 |
Correct |
1 ms |
2396 KB |
Output is correct |
50 |
Correct |
3 ms |
2532 KB |
Output is correct |
51 |
Correct |
27 ms |
3420 KB |
Output is correct |
52 |
Correct |
28 ms |
2904 KB |
Output is correct |
53 |
Correct |
12 ms |
2928 KB |
Output is correct |
54 |
Correct |
28 ms |
3416 KB |
Output is correct |
55 |
Correct |
21 ms |
3156 KB |
Output is correct |
56 |
Correct |
0 ms |
2396 KB |
Output is correct |
57 |
Correct |
0 ms |
2400 KB |
Output is correct |
58 |
Correct |
6 ms |
2656 KB |
Output is correct |
59 |
Correct |
36 ms |
3436 KB |
Output is correct |
60 |
Correct |
33 ms |
3160 KB |
Output is correct |
61 |
Correct |
26 ms |
3420 KB |
Output is correct |
62 |
Correct |
30 ms |
3432 KB |
Output is correct |
63 |
Correct |
27 ms |
3336 KB |
Output is correct |
64 |
Correct |
39 ms |
3408 KB |
Output is correct |
65 |
Correct |
84 ms |
3408 KB |
Output is correct |
66 |
Correct |
27 ms |
3408 KB |
Output is correct |
67 |
Correct |
36 ms |
3416 KB |
Output is correct |
68 |
Correct |
28 ms |
3412 KB |
Output is correct |
69 |
Correct |
130 ms |
3512 KB |
Output is correct |
70 |
Correct |
37 ms |
3440 KB |
Output is correct |
71 |
Correct |
25 ms |
3408 KB |
Output is correct |
72 |
Correct |
86 ms |
3412 KB |
Output is correct |