| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 347739 |
2021-01-13T10:51:44 Z |
ACmachine |
Cake (CEOI14_cake) |
C++17 |
|
0 ms |
0 KB |
#include <bits/stdc++.h>
using namespace std;
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T, typename U> using ordered_map = tree<T, U, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
typedef long long ll;
typedef long double ld;
typedef double db;
typedef string str;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<pii> vpii;
typedef vector<pll> vpll;
typedef vector<str> vstr;
#define FOR(i,j,k,in) for(int i=(j); i < (k);i+=in)
#define FORD(i,j,k,in) for(int i=(j); i >=(k);i-=in)
#define REP(i,b) FOR(i,0,b,1)
#define REPD(i,b) FORD(i,b,0,1)
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define all(x) begin(x), end(x)
#define rsz resize
#define MANY_TESTS int tcase; cin >> tcase; while(tcase--)
const double EPS = 1e-9;
const int MOD = 1e9+7; // 998244353;
const ll INFF = 1e18;
const int INF = 1e9;
const ld PI = acos((ld)-1);
const vi dy = {1, 0, -1, 0, -1, 1, 1, -1};
const vi dx = {0, 1, 0, -1, -1, 1, -1, 1};
#ifdef DEBUG
#define DBG if(1)
#else
#define DBG if(0)
#endif
#define dbg(x) cout << "(" << #x << " : " << x << ")" << endl;
// ostreams
template <class T, class U>
ostream& operator<<(ostream& out, const pair<T, U> &par) {out << "[" << par.first << ";" << par.second << "]"; return out;}
template <class T>
ostream& operator<<(ostream& out, const set<T> &cont) { out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template <class T, class U>
ostream& operator<<(ostream& out, const map<T, U> &cont) {out << "{"; for( const auto &x:cont) out << x << ", "; out << "}"; return out; }
template<class T>
ostream& operator<<(ostream& out, const vector<T> &v){ out << "["; REP(i, v.size()) out << v[i] << ", "; out << "]"; return out;}
// istreams
template<class T>
istream& operator>>(istream& in, vector<T> &v){ for(auto &x : v) in >> x; return in; }
template<class T, class U>
istream& operator>>(istream& in, pair<T, U> &p){ in >> p.ff >> p.ss; return in; }
//searches
template<typename T, typename U>
T bsl(T lo, T hi, U f){ hi++; T mid; while(lo < hi){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid+1; } return lo; }
template<typename U>
double bsld(double lo, double hi, U f, double p = 1e-9){ int r = 3 + (int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? hi = mid : lo = mid; } return (lo + hi)/2; }
template<typename T, typename U>
T bsh(T lo, T hi, U f){ lo--; T mid; while(lo < hi){ mid = (lo + hi + 1)/2; f(mid) ? lo = mid : hi = mid-1; } return lo; }
template<typename U>
double bshd(double lo, double hi, U f, double p = 1e-9){ int r = 3+(int)log2((hi - lo)/p); double mid; while(r--){ mid = (lo + hi)/2; f(mid) ? lo = mid : hi = mid; } return (lo + hi)/2; }
// some more utility functions
template<typename T>
pair<T, int> get_min(vector<T> &v){ typename vector<T> :: iterator it = min_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T>
pair<T, int> get_max(vector<T> &v){ typename vector<T> :: iterator it = max_element(v.begin(), v.end()); return mp(*it, it - v.begin());}
template<typename T> bool ckmin(T& a, const T& b){return b < a ? a = b , true : false;}
template<typename T> bool ckmax(T& a, const T& b){return b > a ? a = b, true : false;}
inline void next_int(int& ans) {
ans = 0;
char ch;
while ((ch = get_char()) < '0' || ch > '9');
do {
ans = ans * 10 + ch - '0';
} while ((ch = get_char()) >= '0' && ch <= '9');
}
struct node{
int ans = 0;
int id = 0;
void apply(int val){
ans = val;
}
};
struct segtree{
int n;
vector<node> tree;
segtree(int _n){
n = 1;
while(n < _n) n *= 2;
tree.resize(2 * n);
}
node comb(node lhs, node rhs){
node res;
res.ans = max(lhs.ans, rhs.ans);
if(lhs.ans > rhs.ans){
res.id = lhs.id;
}
else{
res.id = rhs.id;
}
return res;
}
void build(vector<int> &init){
REP(i, n){
if(i < init.size()){
tree[i + n].ans = init[i];
tree[i + n].id = i;
}
}
FORD(i, n-1, 1, 1)
tree[i] = comb(tree[i<<1], tree[i<<1|1]);
}
void upd(int pos, int val, int beg, int end, int v){
if(beg + 1 == end){
tree[v].apply(val);
return;
}
int mid = (beg + end) >> 1;
if(pos < mid){
upd(pos, val, beg, mid, v << 1);
}
else{
upd(pos, val, mid, end, v << 1 | 1);
}
tree[v] = comb(tree[v<<1], tree[v<<1|1]);
}
node query(int l, int r, int beg, int end, int v){
if(beg >= l && end <= r){
return tree[v];
}
if(beg >= r || end <= l){
node res;
res.ans = -INF;
return res;
}
int mid = (beg + end) >> 1;
return comb(query(l, r, beg, mid, v << 1), query(l, r, mid, end, v << 1 | 1));
}
int find_id(int val, int l, int r, int beg, int end, int v){
if(beg >= r || end <= l){
return -1;
}
if(beg >= l && end <= r){
if(tree[v].ans < val)
return -1;
}
if(beg + 1 == end){
if(tree[v].ans >= val)
return beg;
else
return -1;
}
int mid = (beg + end) >> 1;
int left = find_id(val, l, r, beg, mid, v << 1);
if(left != -1) return left;
else return find_id(val, l, r, mid, end, v<<1|1);
}
int find_id_last(int val, int l, int r, int beg, int end, int v){
if(beg >= r || end <= l){
return -1;
}
if(beg >= l && end <= r){
if(tree[v].ans < val)
return -1;
}
if(beg + 1 == end){
if(tree[v].ans >= val)
return beg;
else
return -1;
}
int mid = (beg + end) >> 1;
int left = find_id_last(val, l, r, mid, end, v << 1|1);
if(left != -1) return left;
else return find_id_last(val, l, r, beg, mid, v<<1);
}
};
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL); cout.tie(NULL);
int n, a;
cin >> n >> a;
a--;
segtree st(n);
vi d(n); cin >> d;
st.build(d);
int q; cin >> q;
int curr_m = n - 9;
array<array<int, 2>, 10> indices;
int topx = min(10, n);
REP(qq, q){
char t; cin >> t;
if(t == 'E'){
int i, e;
cin >> i >> e;
i--;
int x = 0;
int left = 0;
REP(j, topx){
indices[x][0] = st.find_id(curr_m, left, n, 0, st.n, 1);
indices[x][1] = st.query(indices[x][0], indices[x][0] + 1, 0, st.n, 1).ans;
left = indices[x][0] + 1;
x++;
}
/* cout << "E:" << "\n"; */
/* REP(j, topx){ */
/* cout << indices[j][0] << " " << indices[j][1] << "\n"; */
/* } */
/* cout << ":E" << "\n"; */
sort(all(indices), [](array<int, 2> &lhs, array<int, 2> &rhs){return lhs[1] > rhs[1];});
REP(j, e - 1){
st.upd(indices[j][0], indices[j][1] + 1, 0, st.n, 1);
indices[j][1]++;
}
int vali = st.query(i, i+1, 0, st.n, 1).ans;
st.upd(i, indices[e-1][1] + 1, 0, st.n, 1);
if(vali < curr_m){
curr_m = min(indices[e-1][1] + 1, indices[topx - 2][1]);
}
}
else{
int b; cin >> b;
b--;
if(a == b){
cout << 0 << "\n";
}
else if(b > a){
int valb = st.query(a + 1, b + 1, 0, st.n, 1).ans;
int id = st.find_id_last(valb, 0, a, 0, st.n, 1);
id++;
int ans = b - a + (a - id);
cout << ans << "\n";
}
else{
int valb = st.query(b, a, 0, st.n, 1).ans;
int id = st.find_id(valb, a+1, n, 0, st.n, 1);
id--;
if(id == -2){
id = n - 1;
}
int ans = a - b + (id - a);
cout << ans << "\n";
}
}
/* REP(i, 5){ */
/* cout << st.query(i, i + 1, 0, st.n, 1).ans << " "; */
/* } */
/* cout << "\n"; */
}
return 0;
}
Compilation message
cake.cpp: In function 'void next_int(int&)':
cake.cpp:86:15: error: 'get_char' was not declared in this scope; did you mean 'getwchar'?
86 | while ((ch = get_char()) < '0' || ch > '9');
| ^~~~~~~~
| getwchar
cake.cpp:89:17: error: 'get_char' was not declared in this scope; did you mean 'getwchar'?
89 | } while ((ch = get_char()) >= '0' && ch <= '9');
| ^~~~~~~~
| getwchar
cake.cpp: In member function 'void segtree::build(std::vector<int>&)':
cake.cpp:119:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
119 | if(i < init.size()){
| ~~^~~~~~~~~~~~~
