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Submission #4044638
Source Code Expand
#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=a;i<b;i++)
#define rrep(i,a,b) for(int i=a;i>=b;i--)
#define fore(i,a) for(auto &i:a)
#define all(x) (x).begin(),(x).end()
//#pragma GCC optimize ("-O3")
using namespace std; void _main(); int main() { cin.tie(0); ios::sync_with_stdio(false); _main(); }
typedef long long ll; const int inf = INT_MAX / 2; const ll infl = 1LL << 60;
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a = b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a = b; return 1; } return 0; }
//---------------------------------------------------------------------------------------------------
vector<pair<char, int>> runLengthEncoding(string s) {
int n = s.length();
vector<pair<char, int>> res;
char pre = s[0];
int cnt = 1;
rep(i, 1, n) {
if (pre != s[i]) {
res.push_back({ pre, cnt });
pre = s[i];
cnt = 1;
}
else cnt++;
}
res.push_back({ pre, cnt });
return res;
}
/*---------------------------------------------------------------------------------------------------
∧_∧
∧_∧ (´<_` ) Welcome to My Coding Space!
( ´_ゝ`) / ⌒i
/ \ | |
/ / ̄ ̄ ̄ ̄/ |
__(__ニつ/ _/ .| .|____
\/____/ (u ⊃
---------------------------------------------------------------------------------------------------*/
int N; string S;
//---------------------------------------------------------------------------------------------------
void _main() {
cin >> N >> S;
auto v = runLengthEncoding(S);
// change
int n = v.size();
int ma = -1, id;
rep(i, 0, n) if(v[i].first == '>' and ma < v[i].second) {
ma = v[i].second;
id = i;
}
if (ma < 0) {
v[0].second--;
v.push_back({ '>', 1 });
} else {
v[id].second++;
v[id + 1].second--;
}
// run
double ans = 0;
fore(p, v) {
if (p.first == '-') ans += p.second;
else {
rep(k, 0, p.second) ans += 1.0 / (k + 2);
}
}
printf("%.10f\n", ans);
}
Submission Info
| Submission Time | |
|---|---|
| Task | A - レース (Race) |
| User | hamayanhamayan |
| Language | C++14 (GCC 5.4.1) |
| Score | 300 |
| Code Size | 2391 Byte |
| Status | AC |
| Exec Time | 3 ms |
| Memory | 848 KiB |
Judge Result
| Set Name | Sample | All | ||||
|---|---|---|---|---|---|---|
| Score / Max Score | 0 / 0 | 300 / 300 | ||||
| Status |
|
|
| Set Name | Test Cases |
|---|---|
| Sample | sample_01.txt, sample_02.txt, sample_03.txt |
| All | in01.txt, in02.txt, in03.txt, in04.txt, in05.txt, in06.txt, in07.txt, in08.txt, in09.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, sample_01.txt, sample_02.txt, sample_03.txt |
| Case Name | Status | Exec Time | Memory |
|---|---|---|---|
| in01.txt | AC | 1 ms | 256 KiB |
| in02.txt | AC | 1 ms | 256 KiB |
| in03.txt | AC | 2 ms | 512 KiB |
| in04.txt | AC | 2 ms | 512 KiB |
| in05.txt | AC | 2 ms | 512 KiB |
| in06.txt | AC | 2 ms | 512 KiB |
| in07.txt | AC | 2 ms | 512 KiB |
| in08.txt | AC | 2 ms | 512 KiB |
| in09.txt | AC | 2 ms | 512 KiB |
| in10.txt | AC | 2 ms | 512 KiB |
| in11.txt | AC | 2 ms | 592 KiB |
| in12.txt | AC | 2 ms | 720 KiB |
| in13.txt | AC | 3 ms | 848 KiB |
| in14.txt | AC | 3 ms | 848 KiB |
| in15.txt | AC | 2 ms | 512 KiB |
| in16.txt | AC | 2 ms | 512 KiB |
| sample_01.txt | AC | 1 ms | 256 KiB |
| sample_02.txt | AC | 1 ms | 256 KiB |
| sample_03.txt | AC | 1 ms | 256 KiB |