Submission #1543130
Source Code Expand
#pragma GCC optimize ("O3")
#pragma GCC target ("avx")
#include "bits/stdc++.h" // define macro "/D__MAI"
using namespace std;
typedef long long int ll;
#define xprintf(fmt,...) fprintf(stderr,fmt,__VA_ARGS__)
#define debugv(v) {printf("L%d %s > ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl;}
#define debuga(m,w) {printf("L%d %s > ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl;}
#define debugaa(m,h,w) {printf("L%d %s >\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;}}
#define ALL(v) (v).begin(),(v).end()
#define repeat(cnt,l) for(auto cnt=0ll;cnt<(l);++cnt)
#define iterate(cnt,b,e) for(auto cnt=(b);cnt!=(e);++cnt)
#define MD 1000000007ll
#define PI 3.1415926535897932384626433832795
template<typename T1, typename T2> ostream& operator <<(ostream &o, const pair<T1, T2> p) { o << "(" << p.first << ":" << p.second << ")"; return o; }
template<typename iterator> inline size_t argmin(iterator begin, iterator end) { return distance(begin, min_element(begin, end)); }
template<typename iterator> inline size_t argmax(iterator begin, iterator end) { return distance(begin, max_element(begin, end)); }
template<typename T> T& maxset(T& to, const T& val) { return to = max(to, val); }
template<typename T> T& minset(T& to, const T& val) { return to = min(to, val); }
mt19937_64 randdev(8901016);
inline ll rand_range(ll l, ll h) {
return uniform_int_distribution<ll>(l, h)(randdev);
}
#ifdef __MAI
#define getchar_unlocked getchar
#define putchar_unlocked putchar
#endif
#ifdef __VSCC
#define getchar_unlocked _getchar_nolock
#define putchar_unlocked _putchar_nolock
#endif
namespace {
#define isvisiblechar(c) (0x21<=(c)&&(c)<=0x7E)
class MaiScanner {
public:
template<typename T> void input_integer(T& var) {
var = 0;
T sign = 1;
int cc = getchar_unlocked();
for (; cc<'0' || '9'<cc; cc = getchar_unlocked())
if (cc == '-') sign = -1;
for (; '0' <= cc&&cc <= '9'; cc = getchar_unlocked())
var = (var << 3) + (var << 1) + cc - '0';
var = var*sign;
}
inline int c() { return getchar_unlocked(); }
inline MaiScanner& operator>>(int& var) {
input_integer<int>(var);
return *this;
}
inline MaiScanner& operator>>(long long& var) {
input_integer<long long>(var);
return *this;
}
inline MaiScanner& operator>>(string& var) {
int cc = getchar_unlocked();
for (; !isvisiblechar(cc); cc = getchar_unlocked());
for (; isvisiblechar(cc); cc = getchar_unlocked())
var.push_back(cc);
}
template<typename IT> void in(IT begin, IT end) {
for (auto it = begin; it != end; ++it) *this >> *it;
}
};
}
MaiScanner scanner;
class manacher {
public:
vector<int> radius;
manacher() {}
manacher(const string& str) { make(str); }
void make(const string& str) {
// TODO:ざっくりとしか理解してないのでほぼコピペ
// http://snuke.hatenablog.com/entry/2014/12/02/235837
// abaaaa
int length = str.size() * 2 - 1;
radius.resize(length);
int c = 0;
for (int i = 0; i < length; i++) {
int l = c - (i - c);
if (i + radius[l] < c + radius[c]) {
radius[i] = radius[l];
}
else {
int j = c + radius[c] - i;
for (; i - j >= 0 && i + j < length; j++) {
if (((i^j) & 1) == 1) continue;
if (str[(i - j) / 2] != str[(i + j) / 2]) break;
}
radius[i] = j;
c = i;
}
}
}
inline int operator[](int idx) const {
return radius[idx];
}
inline size_t size() const {
return radius.size();
}
void print(const string& str) {
for (int i = 0; i<str.size(); i++) {
cout << str[i] << " ";
}
cout << endl;
for (int i = 0; i<radius.size(); i++) {
cout << radius[i];
}
cout << endl;
}
// 部分文字列str[left..right]が回文かどうか.計算量O(1)
// left,rightに指定するインデックスは,基の文字列のインデックスを指定する.
// TODO:実行チェック
inline bool iskaibun(int left, int right) {
return radius[left + right] > right - left;
}
// 回文の個数を求める.
ll calc_num() {
ll r = 0;
for (auto it = radius.begin(); it < radius.end(); ++it, ++it) {
r += (*it + 1ll) / 2ll;
}
for (auto it = radius.begin() + 1; it < radius.end(); ++it, ++it) {
r += (*it) / 2ll;
}
return r;
}
};
ll m, n, kei;
ll q, h, s, d;
string str;
int main() {
cin >> str;
n = str.size();
// manacher man(str);
ll cnt[30];
fill(cnt,cnt+30,0);
repeat(i, n) {
char c = str[i] - 'a';
cnt[c] += 1;
}
ll z = n*(n + 1) / 2;
repeat(i, 30) {
ll x = cnt[i];
z -= x*(x + 1) / 2;
}
cout << z+1 << endl;
return 0;
}
Submission Info
Submission Time |
|
Task |
B - Reverse and Compare |
User |
m_buyoh |
Language |
C++14 (GCC 5.4.1) |
Score |
500 |
Code Size |
5482 Byte |
Status |
AC |
Exec Time |
8 ms |
Memory |
640 KB |
Judge Result
Set Name |
Sample |
All |
Score / Max Score |
0 / 0 |
500 / 500 |
Status |
|
|
Set Name |
Test Cases |
Sample |
sample_01.txt, sample_02.txt, sample_03.txt |
All |
sample_01.txt, sample_02.txt, sample_03.txt, sample_01.txt, sample_02.txt, sample_03.txt, subtask_1_01.txt, subtask_1_02.txt, subtask_1_03.txt, subtask_1_04.txt, subtask_1_05.txt, subtask_1_06.txt, subtask_1_07.txt, subtask_1_08.txt, subtask_1_09.txt, subtask_1_10.txt, subtask_1_11.txt, subtask_1_12.txt, subtask_1_13.txt, subtask_1_14.txt, subtask_1_15.txt, subtask_1_16.txt, subtask_1_17.txt |
Case Name |
Status |
Exec Time |
Memory |
sample_01.txt |
AC |
1 ms |
256 KB |
sample_02.txt |
AC |
1 ms |
256 KB |
sample_03.txt |
AC |
1 ms |
256 KB |
subtask_1_01.txt |
AC |
1 ms |
256 KB |
subtask_1_02.txt |
AC |
8 ms |
640 KB |
subtask_1_03.txt |
AC |
1 ms |
256 KB |
subtask_1_04.txt |
AC |
1 ms |
256 KB |
subtask_1_05.txt |
AC |
1 ms |
256 KB |
subtask_1_06.txt |
AC |
1 ms |
256 KB |
subtask_1_07.txt |
AC |
2 ms |
256 KB |
subtask_1_08.txt |
AC |
8 ms |
640 KB |
subtask_1_09.txt |
AC |
8 ms |
640 KB |
subtask_1_10.txt |
AC |
8 ms |
640 KB |
subtask_1_11.txt |
AC |
8 ms |
640 KB |
subtask_1_12.txt |
AC |
8 ms |
640 KB |
subtask_1_13.txt |
AC |
8 ms |
640 KB |
subtask_1_14.txt |
AC |
8 ms |
640 KB |
subtask_1_15.txt |
AC |
8 ms |
640 KB |
subtask_1_16.txt |
AC |
8 ms |
640 KB |
subtask_1_17.txt |
AC |
8 ms |
640 KB |