#include <bits/stdc++.h>
using namespace std;
#define int long long
#define ld long double
#define show(x,y) cout << y << " " << #x << endl;
#define show2(x,y,i,j) cout << y << " " << #x << " " << j << " " << #i << endl;
#define show3(x,y,i,j,p,q) cout << y << " " << #x << " " << j << " " << #i << " " << q << " " << #p << endl;
#define show4(x,y) for(auto it:y) cout << it << " "; cout << #x << endl;
typedef pair<int,int>pii;
typedef pair<int,pii>pi2;
const int blk=300;
const int mod=1e9+7;
void solve(){
int n;
cin >> n;
int temp,temp2;
vector<int>adj[n+5];
int cnt[305][305];
memset(cnt,0,sizeof(cnt));
vector<int>prefix[n+5];
vector<int>done[n+5];
int arr[n+5];
for(int x=1;x<=n;x++){
cin >> temp >> temp2;
arr[x]=temp;
if(temp==0) continue;
if(temp>=blk){
for(int y=x+temp;y<=n;y+=temp){
if(temp2==0) break;
temp2--;
adj[x].push_back(y);
}
}
else{
int hold=(n-x)/temp;
temp2=min(temp2,hold);
prefix[x].push_back(temp);
prefix[x+temp2*temp].push_back(-x);
}
}
int dp[n+5];
memset(dp,0,sizeof(dp));
dp[1]=1;
for(int x=1;x<=n;x++){
//show(x,x);
for(int y=1;y<blk;y++){
dp[x]=(dp[x]+cnt[x%y][y]+mod)%mod;
}
for(auto it:adj[x]){
dp[it]=(dp[it]+dp[x])%mod;
}
for(auto it:prefix[x]){
if(it>0){
//show(it,it);
cnt[x%it][it]+=dp[x];
cnt[x%it][it]%=mod;
}
else{
int hold=-it;
//show(hold,hold);
cnt[hold%arr[hold]][arr[hold]]-=dp[hold]-mod;
cnt[hold%arr[hold]][arr[hold]]%=mod;
}
}
//show4(dp,dp);
}
//show4(dp,dp);
int counter=0;
for(int x=1;x<=n;x++){
counter=(counter+dp[x])%mod;
}
cout << counter;
}
int32_t main(){
ios::sync_with_stdio(0);
cin.tie(0);
int t=1;
//cin >> t;
//freopen("in.txt","r",stdin);
while(t--){
solve();
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
1 ms |
1116 KB |
Output is correct |
3 |
Correct |
0 ms |
1116 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
0 ms |
1116 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
0 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
0 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
16 |
Correct |
1 ms |
988 KB |
Output is correct |
17 |
Correct |
1 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1112 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
1 ms |
1116 KB |
Output is correct |
3 |
Correct |
0 ms |
1116 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
0 ms |
1116 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
0 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
0 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
16 |
Correct |
1 ms |
988 KB |
Output is correct |
17 |
Correct |
1 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1112 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
14 ms |
2140 KB |
Output is correct |
21 |
Correct |
5 ms |
1372 KB |
Output is correct |
22 |
Correct |
17 ms |
2824 KB |
Output is correct |
23 |
Correct |
10 ms |
2008 KB |
Output is correct |
24 |
Correct |
7 ms |
1628 KB |
Output is correct |
25 |
Correct |
14 ms |
2344 KB |
Output is correct |
26 |
Correct |
8 ms |
1776 KB |
Output is correct |
27 |
Correct |
14 ms |
2248 KB |
Output is correct |
28 |
Correct |
17 ms |
2392 KB |
Output is correct |
29 |
Correct |
17 ms |
2396 KB |
Output is correct |
30 |
Correct |
16 ms |
2140 KB |
Output is correct |
31 |
Correct |
17 ms |
2244 KB |
Output is correct |
32 |
Correct |
17 ms |
2396 KB |
Output is correct |
33 |
Correct |
16 ms |
2396 KB |
Output is correct |
34 |
Correct |
16 ms |
2140 KB |
Output is correct |
35 |
Correct |
16 ms |
2140 KB |
Output is correct |
36 |
Correct |
16 ms |
2396 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
11 ms |
2008 KB |
Output is correct |
3 |
Correct |
8 ms |
1628 KB |
Output is correct |
4 |
Correct |
14 ms |
2308 KB |
Output is correct |
5 |
Correct |
125 ms |
10332 KB |
Output is correct |
6 |
Correct |
158 ms |
13520 KB |
Output is correct |
7 |
Correct |
159 ms |
13520 KB |
Output is correct |
8 |
Correct |
1 ms |
1112 KB |
Output is correct |
9 |
Correct |
1 ms |
1096 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
17 ms |
2396 KB |
Output is correct |
12 |
Correct |
160 ms |
13516 KB |
Output is correct |
13 |
Correct |
1 ms |
1116 KB |
Output is correct |
14 |
Correct |
17 ms |
2352 KB |
Output is correct |
15 |
Correct |
161 ms |
13704 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
76 ms |
7256 KB |
Output is correct |
2 |
Correct |
64 ms |
6236 KB |
Output is correct |
3 |
Correct |
156 ms |
13644 KB |
Output is correct |
4 |
Correct |
114 ms |
9948 KB |
Output is correct |
5 |
Correct |
1 ms |
1116 KB |
Output is correct |
6 |
Correct |
1 ms |
1116 KB |
Output is correct |
7 |
Correct |
16 ms |
2396 KB |
Output is correct |
8 |
Correct |
158 ms |
13516 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
1116 KB |
Output is correct |
2 |
Correct |
1 ms |
1116 KB |
Output is correct |
3 |
Correct |
0 ms |
1116 KB |
Output is correct |
4 |
Correct |
0 ms |
1116 KB |
Output is correct |
5 |
Correct |
0 ms |
1116 KB |
Output is correct |
6 |
Correct |
0 ms |
1116 KB |
Output is correct |
7 |
Correct |
1 ms |
1116 KB |
Output is correct |
8 |
Correct |
1 ms |
1116 KB |
Output is correct |
9 |
Correct |
0 ms |
1116 KB |
Output is correct |
10 |
Correct |
1 ms |
1116 KB |
Output is correct |
11 |
Correct |
1 ms |
1116 KB |
Output is correct |
12 |
Correct |
1 ms |
1116 KB |
Output is correct |
13 |
Correct |
0 ms |
1116 KB |
Output is correct |
14 |
Correct |
1 ms |
1116 KB |
Output is correct |
15 |
Correct |
1 ms |
1116 KB |
Output is correct |
16 |
Correct |
1 ms |
988 KB |
Output is correct |
17 |
Correct |
1 ms |
1116 KB |
Output is correct |
18 |
Correct |
1 ms |
1112 KB |
Output is correct |
19 |
Correct |
1 ms |
1116 KB |
Output is correct |
20 |
Correct |
14 ms |
2140 KB |
Output is correct |
21 |
Correct |
5 ms |
1372 KB |
Output is correct |
22 |
Correct |
17 ms |
2824 KB |
Output is correct |
23 |
Correct |
10 ms |
2008 KB |
Output is correct |
24 |
Correct |
7 ms |
1628 KB |
Output is correct |
25 |
Correct |
14 ms |
2344 KB |
Output is correct |
26 |
Correct |
8 ms |
1776 KB |
Output is correct |
27 |
Correct |
14 ms |
2248 KB |
Output is correct |
28 |
Correct |
17 ms |
2392 KB |
Output is correct |
29 |
Correct |
17 ms |
2396 KB |
Output is correct |
30 |
Correct |
16 ms |
2140 KB |
Output is correct |
31 |
Correct |
17 ms |
2244 KB |
Output is correct |
32 |
Correct |
17 ms |
2396 KB |
Output is correct |
33 |
Correct |
16 ms |
2396 KB |
Output is correct |
34 |
Correct |
16 ms |
2140 KB |
Output is correct |
35 |
Correct |
16 ms |
2140 KB |
Output is correct |
36 |
Correct |
16 ms |
2396 KB |
Output is correct |
37 |
Correct |
1 ms |
1116 KB |
Output is correct |
38 |
Correct |
11 ms |
2008 KB |
Output is correct |
39 |
Correct |
8 ms |
1628 KB |
Output is correct |
40 |
Correct |
14 ms |
2308 KB |
Output is correct |
41 |
Correct |
125 ms |
10332 KB |
Output is correct |
42 |
Correct |
158 ms |
13520 KB |
Output is correct |
43 |
Correct |
159 ms |
13520 KB |
Output is correct |
44 |
Correct |
1 ms |
1112 KB |
Output is correct |
45 |
Correct |
1 ms |
1096 KB |
Output is correct |
46 |
Correct |
1 ms |
1116 KB |
Output is correct |
47 |
Correct |
17 ms |
2396 KB |
Output is correct |
48 |
Correct |
160 ms |
13516 KB |
Output is correct |
49 |
Correct |
1 ms |
1116 KB |
Output is correct |
50 |
Correct |
17 ms |
2352 KB |
Output is correct |
51 |
Correct |
161 ms |
13704 KB |
Output is correct |
52 |
Correct |
76 ms |
7256 KB |
Output is correct |
53 |
Correct |
64 ms |
6236 KB |
Output is correct |
54 |
Correct |
156 ms |
13644 KB |
Output is correct |
55 |
Correct |
114 ms |
9948 KB |
Output is correct |
56 |
Correct |
1 ms |
1116 KB |
Output is correct |
57 |
Correct |
1 ms |
1116 KB |
Output is correct |
58 |
Correct |
16 ms |
2396 KB |
Output is correct |
59 |
Correct |
158 ms |
13516 KB |
Output is correct |
60 |
Correct |
133 ms |
11612 KB |
Output is correct |
61 |
Correct |
157 ms |
13728 KB |
Output is correct |
62 |
Correct |
156 ms |
13404 KB |
Output is correct |
63 |
Correct |
162 ms |
13720 KB |
Output is correct |
64 |
Correct |
153 ms |
9772 KB |
Output is correct |
65 |
Correct |
235 ms |
78932 KB |
Output is correct |
66 |
Correct |
153 ms |
13808 KB |
Output is correct |
67 |
Correct |
163 ms |
15192 KB |
Output is correct |
68 |
Correct |
156 ms |
11740 KB |
Output is correct |
69 |
Correct |
170 ms |
19684 KB |
Output is correct |
70 |
Correct |
155 ms |
13144 KB |
Output is correct |
71 |
Correct |
158 ms |
12892 KB |
Output is correct |
72 |
Correct |
162 ms |
24252 KB |
Output is correct |