#include <iostream>
#include <cstdio>
#include <string>
#include <sstream>
#include <algorithm>
#include <set>
#include <numeric>
#include <cmath>
#include <map>
#include <vector>
#include <queue>
#include <stack>
#include <cstring>
#include <queue>
#include <numeric>
#include <iomanip>
#define ll long long
using namespace std;
long long sum[10002];
long long arr[10002];
int start[10002];
const long long mod=1e9+7;
long long dp[10002];
vector<long long > valid;
int n;
long long go(int idx,long long sm){
if(dp[idx]!=-1)return dp[idx];
if(idx==n+1)return dp[idx]=1;
dp[idx]=0;
for(int i=idx;i<=n;i++){
if(sum[i]-sum[idx-1]==sm){
dp[idx]=(dp[idx]+go(i+1,sm));
dp[idx]%=mod;
}
}
return dp[idx];
}
long long fastPow(int k){
if(k<0)return 0;
long long ret=1;
long long two=2;
for(int i=0;i<20;i++){
if(k&(1<<i)){
ret=(ret*two)%mod;
k-=(1<<i);
}
two=(two*two)%mod;
}
return ret;
}
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cin>>n;
for(int i=1;i<=n;i++){
cin>>arr[i];
sum[i]=sum[i-1]+arr[i];
}
for(int i=1;i<=n;i++){
if(sum[i]!=0 && sum[n]%sum[i]==0){
valid.push_back(sum[i]);
}
}
sort(valid.begin(),valid.end());
valid.erase(unique(valid.begin(),valid.end()),valid.end());
//sum[n]=0인경우 예외처리
if(sum[n]==0)valid.clear(),valid.push_back(0);
for(int i=0;i<valid.size();i++){
for(int j=1;j<n;j++){
if(sum[j]==valid[i]){
start[i]=j;
break;
}
}
}
long long ans=0;
for(int i=0;i<valid.size();i++){
memset(dp,-1,sizeof(dp));
long long num=valid[i];
ans=(ans+go(1,valid[i]))%mod;
}
cout<<(ans+mod-1)%mod;
return 0;
}
Compilation message
UV.cpp: In function 'int main()':
UV.cpp:68:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<valid.size();i++){
^
UV.cpp:77:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<valid.size();i++){
^
UV.cpp:79:19: warning: unused variable 'num' [-Wunused-variable]
long long num=valid[i];
^
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
2452 KB |
Output is correct |
2 |
Correct |
0 ms |
2452 KB |
Output is correct |
3 |
Correct |
0 ms |
2452 KB |
Output is correct |
4 |
Correct |
129 ms |
2952 KB |
Output is correct |
5 |
Correct |
129 ms |
2952 KB |
Output is correct |
6 |
Correct |
406 ms |
2948 KB |
Output is correct |
7 |
Correct |
96 ms |
2492 KB |
Output is correct |
8 |
Correct |
73 ms |
2476 KB |
Output is correct |
9 |
Correct |
53 ms |
2484 KB |
Output is correct |
10 |
Correct |
79 ms |
2452 KB |
Output is correct |
11 |
Correct |
83 ms |
2452 KB |
Output is correct |
12 |
Correct |
113 ms |
2452 KB |
Output is correct |
13 |
Correct |
116 ms |
2488 KB |
Output is correct |
14 |
Correct |
86 ms |
2480 KB |
Output is correct |
15 |
Correct |
83 ms |
2476 KB |
Output is correct |
16 |
Correct |
109 ms |
2452 KB |
Output is correct |
17 |
Correct |
63 ms |
2452 KB |
Output is correct |
18 |
Correct |
99 ms |
2452 KB |
Output is correct |
19 |
Correct |
0 ms |
2612 KB |
Output is correct |
20 |
Correct |
6 ms |
2612 KB |
Output is correct |
21 |
Correct |
23 ms |
2612 KB |
Output is correct |
22 |
Correct |
96 ms |
2728 KB |
Output is correct |
23 |
Correct |
133 ms |
2772 KB |
Output is correct |
24 |
Correct |
123 ms |
2788 KB |
Output is correct |
25 |
Correct |
109 ms |
2800 KB |
Output is correct |
26 |
Correct |
103 ms |
2800 KB |
Output is correct |
27 |
Correct |
99 ms |
2452 KB |
Output is correct |
28 |
Correct |
103 ms |
2452 KB |
Output is correct |
29 |
Correct |
153 ms |
2452 KB |
Output is correct |
30 |
Correct |
163 ms |
2452 KB |
Output is correct |
31 |
Correct |
123 ms |
2452 KB |
Output is correct |
32 |
Correct |
143 ms |
2452 KB |
Output is correct |
33 |
Correct |
136 ms |
2452 KB |
Output is correct |
34 |
Correct |
109 ms |
2452 KB |
Output is correct |
35 |
Correct |
163 ms |
2452 KB |
Output is correct |
36 |
Correct |
183 ms |
2452 KB |
Output is correct |
37 |
Correct |
183 ms |
2452 KB |
Output is correct |
38 |
Correct |
196 ms |
2452 KB |
Output is correct |
39 |
Correct |
183 ms |
2452 KB |
Output is correct |
40 |
Correct |
136 ms |
2452 KB |
Output is correct |
41 |
Correct |
173 ms |
2452 KB |
Output is correct |
42 |
Correct |
96 ms |
2452 KB |
Output is correct |
43 |
Correct |
179 ms |
2452 KB |
Output is correct |
44 |
Correct |
116 ms |
2452 KB |
Output is correct |
45 |
Correct |
173 ms |
2452 KB |
Output is correct |
46 |
Correct |
169 ms |
2452 KB |
Output is correct |
47 |
Correct |
126 ms |
2452 KB |
Output is correct |
48 |
Correct |
126 ms |
2452 KB |
Output is correct |
49 |
Correct |
83 ms |
2452 KB |
Output is correct |
50 |
Correct |
136 ms |
2452 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
89 ms |
2484 KB |
Output is correct |
2 |
Correct |
56 ms |
2492 KB |
Output is correct |
3 |
Correct |
59 ms |
2488 KB |
Output is correct |
4 |
Correct |
83 ms |
2452 KB |
Output is correct |
5 |
Correct |
149 ms |
2452 KB |
Output is correct |
6 |
Correct |
139 ms |
2452 KB |
Output is correct |
7 |
Correct |
186 ms |
2492 KB |
Output is correct |
8 |
Correct |
113 ms |
2480 KB |
Output is correct |
9 |
Correct |
13 ms |
2452 KB |
Output is correct |
10 |
Correct |
0 ms |
2452 KB |
Output is correct |
11 |
Correct |
0 ms |
2452 KB |
Output is correct |
12 |
Correct |
0 ms |
2452 KB |
Output is correct |
13 |
Correct |
0 ms |
2452 KB |
Output is correct |
14 |
Correct |
0 ms |
2452 KB |
Output is correct |
15 |
Correct |
0 ms |
2452 KB |
Output is correct |
16 |
Correct |
0 ms |
2452 KB |
Output is correct |
17 |
Correct |
156 ms |
2952 KB |
Output is correct |
18 |
Correct |
149 ms |
2956 KB |
Output is correct |
19 |
Correct |
466 ms |
2948 KB |
Output is correct |
20 |
Correct |
3 ms |
2612 KB |
Output is correct |
21 |
Correct |
0 ms |
2612 KB |
Output is correct |
22 |
Correct |
9 ms |
2612 KB |
Output is correct |
23 |
Correct |
196 ms |
2824 KB |
Output is correct |
24 |
Correct |
336 ms |
2888 KB |
Output is correct |
25 |
Correct |
403 ms |
2948 KB |
Output is correct |
26 |
Correct |
449 ms |
2952 KB |
Output is correct |
27 |
Correct |
39 ms |
2452 KB |
Output is correct |
28 |
Correct |
36 ms |
2452 KB |
Output is correct |
29 |
Correct |
29 ms |
2452 KB |
Output is correct |
30 |
Correct |
29 ms |
2452 KB |
Output is correct |
31 |
Correct |
29 ms |
2508 KB |
Output is correct |
32 |
Correct |
43 ms |
2452 KB |
Output is correct |
33 |
Correct |
29 ms |
2452 KB |
Output is correct |
34 |
Correct |
29 ms |
2452 KB |
Output is correct |
35 |
Correct |
26 ms |
2452 KB |
Output is correct |
36 |
Correct |
29 ms |
2452 KB |
Output is correct |
37 |
Correct |
29 ms |
2452 KB |
Output is correct |
38 |
Correct |
36 ms |
2452 KB |
Output is correct |
39 |
Correct |
29 ms |
2452 KB |
Output is correct |
40 |
Correct |
66 ms |
2452 KB |
Output is correct |
41 |
Correct |
69 ms |
2452 KB |
Output is correct |
42 |
Correct |
43 ms |
2452 KB |
Output is correct |
43 |
Correct |
59 ms |
2452 KB |
Output is correct |
44 |
Correct |
79 ms |
2452 KB |
Output is correct |
45 |
Correct |
59 ms |
2452 KB |
Output is correct |
46 |
Correct |
9 ms |
2452 KB |
Output is correct |
47 |
Correct |
13 ms |
2452 KB |
Output is correct |
48 |
Correct |
9 ms |
2452 KB |
Output is correct |
49 |
Correct |
16 ms |
2452 KB |
Output is correct |
50 |
Correct |
13 ms |
2452 KB |
Output is correct |
51 |
Correct |
13 ms |
2452 KB |
Output is correct |
52 |
Correct |
3 ms |
2452 KB |
Output is correct |
53 |
Correct |
3 ms |
2452 KB |
Output is correct |
54 |
Correct |
6 ms |
2452 KB |
Output is correct |
55 |
Correct |
3 ms |
2452 KB |
Output is correct |
56 |
Correct |
3 ms |
2452 KB |
Output is correct |
57 |
Correct |
3 ms |
2452 KB |
Output is correct |
58 |
Correct |
3 ms |
2452 KB |
Output is correct |
59 |
Correct |
3 ms |
2452 KB |
Output is correct |
60 |
Correct |
3 ms |
2452 KB |
Output is correct |
61 |
Correct |
3 ms |
2452 KB |
Output is correct |
62 |
Correct |
6 ms |
2452 KB |
Output is correct |
63 |
Correct |
3 ms |
2452 KB |
Output is correct |
64 |
Correct |
73 ms |
2612 KB |
Output is correct |
65 |
Correct |
93 ms |
2612 KB |
Output is correct |
66 |
Correct |
99 ms |
2452 KB |
Output is correct |
67 |
Correct |
116 ms |
2612 KB |
Output is correct |
68 |
Correct |
93 ms |
2452 KB |
Output is correct |
69 |
Correct |
143 ms |
2612 KB |
Output is correct |
70 |
Correct |
159 ms |
2452 KB |
Output is correct |
71 |
Correct |
143 ms |
2452 KB |
Output is correct |
72 |
Correct |
186 ms |
2452 KB |
Output is correct |
73 |
Correct |
186 ms |
2452 KB |
Output is correct |
74 |
Correct |
169 ms |
2452 KB |
Output is correct |
75 |
Correct |
186 ms |
2452 KB |
Output is correct |
76 |
Correct |
126 ms |
2452 KB |
Output is correct |
77 |
Correct |
163 ms |
2452 KB |
Output is correct |
78 |
Correct |
166 ms |
2452 KB |
Output is correct |
79 |
Correct |
173 ms |
2452 KB |
Output is correct |
80 |
Correct |
186 ms |
2452 KB |
Output is correct |
81 |
Correct |
143 ms |
2452 KB |
Output is correct |
82 |
Correct |
156 ms |
2452 KB |
Output is correct |
83 |
Correct |
143 ms |
2452 KB |
Output is correct |
84 |
Correct |
143 ms |
2452 KB |
Output is correct |
85 |
Correct |
119 ms |
2452 KB |
Output is correct |
86 |
Correct |
169 ms |
2452 KB |
Output is correct |
87 |
Correct |
173 ms |
2452 KB |
Output is correct |
88 |
Correct |
156 ms |
2452 KB |
Output is correct |
89 |
Correct |
179 ms |
2452 KB |
Output is correct |
90 |
Correct |
119 ms |
2452 KB |
Output is correct |
91 |
Correct |
0 ms |
2452 KB |
Output is correct |
92 |
Correct |
0 ms |
2452 KB |
Output is correct |
93 |
Correct |
0 ms |
2452 KB |
Output is correct |
94 |
Correct |
129 ms |
2952 KB |
Output is correct |
95 |
Correct |
129 ms |
2952 KB |
Output is correct |
96 |
Correct |
406 ms |
2948 KB |
Output is correct |
97 |
Correct |
96 ms |
2492 KB |
Output is correct |
98 |
Correct |
73 ms |
2476 KB |
Output is correct |
99 |
Correct |
53 ms |
2484 KB |
Output is correct |
100 |
Correct |
79 ms |
2452 KB |
Output is correct |
101 |
Correct |
83 ms |
2452 KB |
Output is correct |
102 |
Correct |
113 ms |
2452 KB |
Output is correct |
103 |
Correct |
116 ms |
2488 KB |
Output is correct |
104 |
Correct |
86 ms |
2480 KB |
Output is correct |
105 |
Correct |
83 ms |
2476 KB |
Output is correct |
106 |
Correct |
109 ms |
2452 KB |
Output is correct |
107 |
Correct |
63 ms |
2452 KB |
Output is correct |
108 |
Correct |
99 ms |
2452 KB |
Output is correct |
109 |
Correct |
0 ms |
2612 KB |
Output is correct |
110 |
Correct |
6 ms |
2612 KB |
Output is correct |
111 |
Correct |
23 ms |
2612 KB |
Output is correct |
112 |
Correct |
96 ms |
2728 KB |
Output is correct |
113 |
Correct |
133 ms |
2772 KB |
Output is correct |
114 |
Correct |
123 ms |
2788 KB |
Output is correct |
115 |
Correct |
109 ms |
2800 KB |
Output is correct |
116 |
Correct |
103 ms |
2800 KB |
Output is correct |
117 |
Correct |
99 ms |
2452 KB |
Output is correct |
118 |
Correct |
103 ms |
2452 KB |
Output is correct |
119 |
Correct |
153 ms |
2452 KB |
Output is correct |
120 |
Correct |
163 ms |
2452 KB |
Output is correct |
121 |
Correct |
123 ms |
2452 KB |
Output is correct |
122 |
Correct |
143 ms |
2452 KB |
Output is correct |
123 |
Correct |
136 ms |
2452 KB |
Output is correct |
124 |
Correct |
109 ms |
2452 KB |
Output is correct |
125 |
Correct |
163 ms |
2452 KB |
Output is correct |
126 |
Correct |
183 ms |
2452 KB |
Output is correct |
127 |
Correct |
183 ms |
2452 KB |
Output is correct |
128 |
Correct |
196 ms |
2452 KB |
Output is correct |
129 |
Correct |
183 ms |
2452 KB |
Output is correct |
130 |
Correct |
136 ms |
2452 KB |
Output is correct |
131 |
Correct |
173 ms |
2452 KB |
Output is correct |
132 |
Correct |
96 ms |
2452 KB |
Output is correct |
133 |
Correct |
179 ms |
2452 KB |
Output is correct |
134 |
Correct |
116 ms |
2452 KB |
Output is correct |
135 |
Correct |
173 ms |
2452 KB |
Output is correct |
136 |
Correct |
169 ms |
2452 KB |
Output is correct |
137 |
Correct |
126 ms |
2452 KB |
Output is correct |
138 |
Correct |
126 ms |
2452 KB |
Output is correct |
139 |
Correct |
83 ms |
2452 KB |
Output is correct |
140 |
Correct |
136 ms |
2452 KB |
Output is correct |