Submission #1778516
Source Code Expand
#include <cstdio> #include <algorithm> using namespace std; typedef long long int ll; const ll INF = (ll)2e18; const ll MOD = 1000000007LL; ll S[100010]; ll dp[100010]; int main() { ll N, A, B; scanf("%lld%lld%lld", &N, &A, &B); if(A > B) swap(A, B); S[0] = S[1] = -INF; for(int i=0; i<N; i++) scanf("%lld", &S[i+2]); dp[1] = 1; int ptr = 1; int ub = 0; for(int i=2; i<N+2; i++) { if(S[i] - S[i-2] < A) { printf("0\n"); return 0; } // current: i // prev: i-1 // 二つ目の山に入れる int lb = ptr - 1; while(S[i] - S[ub+1] >= B) ub++; ll val = (lb >= ub ? 0 : dp[ub]); // 一つ目の山に入れる ll diff = S[i] - S[i-1]; if(diff < A) { // dp[i-2] 以前の要素は全て 0 になる // 0 でない値が格納されているインデックスの下限は i-1 になり、 // その値について、累積を解除 ptr = i-1; dp[i-1] = (dp[i-1] - dp[i-2] + MOD) % MOD; } dp[i] = (dp[i-1] + val) % MOD; } printf("%lld\n", dp[N+1]); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Division into Two |
User | tsutaj |
Language | C++14 (GCC 5.4.1) |
Score | 1100 |
Code Size | 1237 Byte |
Status | AC |
Exec Time | 18 ms |
Memory | 1664 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:12:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] ll N, A, B; scanf("%lld%lld%lld", &N, &A, &B); ^ ./Main.cpp:15:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(int i=0; i<N; i++) scanf("%lld", &S[i+2]); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1100 / 1100 | ||||
Status |
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|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt, s3.txt, s4.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, 48.txt, 49.txt, 50.txt, 51.txt, 52.txt, 53.txt, 54.txt, 55.txt, 56.txt, 57.txt, 58.txt, 59.txt, 60.txt, 61.txt, 62.txt, 63.txt, 64.txt, s1.txt, s2.txt, s3.txt, s4.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | AC | 18 ms | 1664 KB |
02.txt | AC | 16 ms | 1664 KB |
03.txt | AC | 18 ms | 1664 KB |
04.txt | AC | 17 ms | 1664 KB |
05.txt | AC | 16 ms | 1664 KB |
06.txt | AC | 17 ms | 1664 KB |
07.txt | AC | 18 ms | 1664 KB |
08.txt | AC | 17 ms | 1664 KB |
09.txt | AC | 18 ms | 1664 KB |
10.txt | AC | 18 ms | 1664 KB |
11.txt | AC | 17 ms | 1664 KB |
12.txt | AC | 18 ms | 1664 KB |
13.txt | AC | 17 ms | 1664 KB |
14.txt | AC | 17 ms | 1664 KB |
15.txt | AC | 17 ms | 1664 KB |
16.txt | AC | 10 ms | 1664 KB |
17.txt | AC | 12 ms | 1664 KB |
18.txt | AC | 14 ms | 1664 KB |
19.txt | AC | 12 ms | 1664 KB |
20.txt | AC | 13 ms | 1664 KB |
21.txt | AC | 13 ms | 1664 KB |
22.txt | AC | 13 ms | 1664 KB |
23.txt | AC | 11 ms | 1664 KB |
24.txt | AC | 12 ms | 1664 KB |
25.txt | AC | 15 ms | 1664 KB |
26.txt | AC | 15 ms | 1664 KB |
27.txt | AC | 15 ms | 1664 KB |
28.txt | AC | 15 ms | 1664 KB |
29.txt | AC | 14 ms | 1664 KB |
30.txt | AC | 14 ms | 1664 KB |
31.txt | AC | 13 ms | 1664 KB |
32.txt | AC | 14 ms | 1664 KB |
33.txt | AC | 15 ms | 1664 KB |
34.txt | AC | 12 ms | 1664 KB |
35.txt | AC | 15 ms | 1664 KB |
36.txt | AC | 11 ms | 1664 KB |
37.txt | AC | 10 ms | 1664 KB |
38.txt | AC | 10 ms | 1664 KB |
39.txt | AC | 18 ms | 1664 KB |
40.txt | AC | 11 ms | 1664 KB |
41.txt | AC | 12 ms | 1664 KB |
42.txt | AC | 10 ms | 896 KB |
43.txt | AC | 18 ms | 1664 KB |
44.txt | AC | 18 ms | 1664 KB |
45.txt | AC | 18 ms | 1664 KB |
46.txt | AC | 18 ms | 1664 KB |
47.txt | AC | 17 ms | 1152 KB |
48.txt | AC | 17 ms | 896 KB |
49.txt | AC | 0 ms | 128 KB |
50.txt | AC | 0 ms | 128 KB |
51.txt | AC | 0 ms | 128 KB |
52.txt | AC | 0 ms | 128 KB |
53.txt | AC | 0 ms | 128 KB |
54.txt | AC | 0 ms | 128 KB |
55.txt | AC | 0 ms | 128 KB |
56.txt | AC | 0 ms | 128 KB |
57.txt | AC | 0 ms | 128 KB |
58.txt | AC | 0 ms | 128 KB |
59.txt | AC | 0 ms | 128 KB |
60.txt | AC | 0 ms | 128 KB |
61.txt | AC | 0 ms | 128 KB |
62.txt | AC | 0 ms | 128 KB |
63.txt | AC | 0 ms | 128 KB |
64.txt | AC | 0 ms | 128 KB |
s1.txt | AC | 0 ms | 128 KB |
s2.txt | AC | 0 ms | 128 KB |
s3.txt | AC | 0 ms | 128 KB |
s4.txt | AC | 0 ms | 128 KB |