| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 146642 |
2019-08-24T19:11:25 Z |
12tqian |
Cake (CEOI14_cake) |
C++14 |
|
1190 ms |
27400 KB |
#pragma comment(linker, "/stack:200000000")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
const double PI = 4 * atan(1);
#define sz(x) (int)(x).size()
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define pii pair <int, int>
#define vi vector<int>
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define vpi vector<pair<int, int>>
#define vpd vector<pair<double, double>>
#define pd pair<double, double>
#define f0r(i,a) for(int i=0;i<a;i++)
#define f1r(i,a,b) for(int i=a;i<b;i++)
#define trav(a, x) for (auto& a : x)
template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "(" << p.f << ", " << p.s << ")"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) {
cout << "["; for(int i = 0; i < v.size(); i++) {if (i) cout << ", "; cout << v[i];} return cout << "]";
}
void fast_io(){
ios_base::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
}
void io(string taskname){
string fin = taskname + ".in";
string fout = taskname + ".out";
const char* FIN = fin.c_str();
const char* FOUT = fout.c_str();
freopen(FIN, "r", stdin);
freopen(FOUT, "w", stdout);
fast_io();
}
const int MAX = 250005;
const int BIG = 10;
const int INF = 1e9;
int n, a;
int beg[MAX];
vector<pair<int, pii>> queries;
vpi updates;
vi num;
int rec[MAX];
vpi ord;
template<class T, int SZ> struct Seg { // SZ should be power of 2
T ID = 0; // comb(ID,b) must equal b
T comb(T a, T b) { return max(a, b); } // easily change this to min or max
T seg[2*SZ];
Seg() { memset(seg,0,sizeof seg); }
void upd(int p, T value) { // set value at position p
seg[p += SZ] = value;
for (p /= 2; p; p /= 2) seg[p] = comb(seg[2*p],seg[2*p+1]);
}
T query(int l, int r) { // sum on interval [l, r]
r ++; T lres = ID, rres = ID; // make sure non-commutative operations work
for (l += SZ, r += SZ; l < r; l /= 2, r /= 2) {
if (l&1) lres = comb(lres,seg[l++]);
if (r&1) rres = comb(seg[--r],rres);
}
return comb(lres,rres);
}
};
template<class T, int SZ> struct seg {
T mx[2*SZ], lazy[2*SZ]; // set SZ to a power of 2
//lazy is -1 if nothing, 0 if making all 0, 1, if making all 1
void push(int ind, int L, int R) {
if(lazy[ind] == -INF) return;
mx[ind] = max(lazy[ind], mx[ind]);
if(L!= R) lazy[2*ind] = lazy[ind], lazy[2*ind+1] = lazy[ind];
lazy[ind] = -INF;
}
void build(){
f0r(i, 2*SZ) lazy[i] = -INF;
}
void pull(int ind) {
mx[ind] = max(mx[2*ind], mx[2*ind+1]);
}
T qmax(int lo, int hi, int ind = 1, int L = 0, int R = SZ-1) {
push(ind,L,R);
if (lo > R || L > hi) return 0;
if (lo <= L && R <= hi) return mx[ind];
int M = (L+R)/2;
return max(qmax(lo,hi,2*ind,L,M),qmax(lo,hi,2*ind+1,M+1,R));
}
void upd(int lo, int hi, long long inc, int ind = 1, int L = 0, int R = SZ-1) {
//cout << lo << " " << hi << " " << L << " "<< R << " asdf\n";
push(ind,L,R);
if (hi < L || R < lo) return;
if (lo <= L && R <= hi) {
lazy[ind] = inc;
// cout << L << " " << R << " " << lazy[ind] << endl;
push(ind,L,R);
return;
}
int M = (L+R)/2;
upd(lo,hi,inc,2*ind,L,M); upd(lo,hi,inc,2*ind+1,M+1,R);
pull(ind);
}
///find right most greater than x
int lsearch(int x, int ind = 1, int L = 0, int R = SZ-1){
int M = (L + R)/2;
push(ind, L, R);
if(L != R) push(2*ind, L, M);
if(L!= R) push(2*ind+1, M+1, R);
if(mx[ind] <x) return -1;
if(L == R) return L;
//int M = (L + R)/2;
if(mx[2*ind+1]>x){
return lsearch(x, 2*ind+1, M+1, R);
}
else{
return lsearch(x, 2*ind, L, M);
}
}
int rsearch(int x, int ind = 1, int L = 0, int R = SZ-1){
int M = (L + R)/2;
push(ind, L, R);
if(L != R) push(2*ind, L, M);
if(L!= R) push(2*ind+1, M+1, R);
if(mx[ind] <x) return n;
if(L == R) return L;
if(mx[2*ind]>x){
return rsearch(x, 2*ind, L, M);
}
else{
return rsearch(x, 2*ind+1, M+1, R);
}
}
};
Seg<int, (1<<18)> mst;
///find right that's greater than x
int binl(int l, int r, int x){
if(mst.query(l, r) <x) return -1;
while(abs(l-r)>1){
int m = (l+r)/2;
int val = mst.query(m, a-1);
if(val>x){
l = m;
}
else{
r = m-1;
}
}
if(l>r) swap(l, r);
if(mst.query(r, a-1) >x) return r;
return l;
}
int binr(int l, int r, int x){
if(mst.query(l, r)<x) return n;
while(abs(l-r)>1){
int m = (l+r)/2;
int val = mst.query(a+1, m);
if(val>x){
r = m;
}
else l = m+1;
}
if(l>r) swap(l, r);
if(mst.query(a+1, l)>x) return l;
return r;
}
int main(){
fast_io();
cin >> n >> a;
a--;
vpi d;
f0r(i, n){
int di;
cin >> di;
d.eb(mp(di, i));
beg[i] = di;
}
int q;
cin >> q;
f0r(it, q){
char c;
cin >> c;
if(c == 'E'){
int i, e;
cin >> i >> e;
i--; e--;
queries.eb(mp(0, mp(i, e)));
updates.eb(mp(i, e));
}
else{
int b;
cin >> b;
b--;
queries.eb(mp(1, mp(b, -1)));
}
}
sort(all(d));
int time = 0;
for(auto x: d) ord.eb(mp(x.s, time));
time++;
for(auto x: updates){
vpi pop;
int cur = 0;
while(cur<x.s){
int last = sz(ord) - 1;
if(rec[ord[last].f] == ord[last].s){
cur++;
}
pop.eb(ord[last]);
ord.pop_back();
}
rec[x.f] = time;
ord.eb(mp(x.f, time));
reverse(all(pop));
for(auto y: pop) ord.eb(y);
time++;
}
//return 0;
num.resize(sz(ord));
f0r(i, sz(ord)){
if(ord[i].s == 0){
beg[ord[i].f] = i;
}
else{
num[ord[i].s - 1] = i;
}
}
f0r(i, n){
mst.upd(i, beg[i]);
}
int cnt = 0;
// cout << queries << endl;
for(auto x: queries){
if(x.f == 0){
int i = x.s.f;
int e = x.s.s;
if(i == a) {cnt++; continue;}
mst.upd(i, num[cnt]);
cnt++;
}
else{
int b = x.s.f;
if(b == a){cout << 0 << endl; continue;}
int idx;
if(b<a){
int mx = mst.query(b, a-1);
if(a+1<n) idx = binr(a+1, n-1, mx);
else idx = n;
}
else{
int mx = mst.query(a+1, b);
if(a>0) idx = binl(0, a-1, mx);
else idx = -1;
}
cout << abs(b - a)+1 + abs(idx - a) - 1-1 << endl;
}
}
return 0;
}
Compilation message
cake.cpp:1:0: warning: ignoring #pragma comment [-Wunknown-pragmas]
#pragma comment(linker, "/stack:200000000")
cake.cpp: In function 'int main()':
cake.cpp:262:17: warning: unused variable 'e' [-Wunused-variable]
int e = x.s.s;
^
cake.cpp: In function 'void io(std::__cxx11::string)':
cake.cpp:52:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen(FIN, "r", stdin);
~~~~~~~^~~~~~~~~~~~~~~~~
cake.cpp:53:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
freopen(FOUT, "w", stdout);
~~~~~~~^~~~~~~~~~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
4 ms |
2424 KB |
Output is correct |
| 2 |
Correct |
5 ms |
2428 KB |
Output is correct |
| 3 |
Correct |
5 ms |
2424 KB |
Output is correct |
| 4 |
Correct |
13 ms |
2680 KB |
Output is correct |
| 5 |
Correct |
26 ms |
3192 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
232 ms |
22588 KB |
Output is correct |
| 2 |
Correct |
173 ms |
22400 KB |
Output is correct |
| 3 |
Correct |
187 ms |
23116 KB |
Output is correct |
| 4 |
Correct |
154 ms |
22868 KB |
Output is correct |
| 5 |
Correct |
242 ms |
23304 KB |
Output is correct |
| 6 |
Correct |
232 ms |
27400 KB |
Output is correct |
| 7 |
Correct |
200 ms |
27372 KB |
Output is correct |
| 8 |
Correct |
167 ms |
27244 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
377 ms |
8748 KB |
Output is correct |
| 2 |
Correct |
354 ms |
8556 KB |
Output is correct |
| 3 |
Correct |
335 ms |
8420 KB |
Output is correct |
| 4 |
Correct |
4 ms |
2424 KB |
Output is correct |
| 5 |
Correct |
425 ms |
12652 KB |
Output is correct |
| 6 |
Correct |
407 ms |
12520 KB |
Output is correct |
| 7 |
Correct |
385 ms |
12136 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
96 ms |
4272 KB |
Output is correct |
| 2 |
Correct |
97 ms |
4308 KB |
Output is correct |
| 3 |
Correct |
175 ms |
7532 KB |
Output is correct |
| 4 |
Correct |
171 ms |
7532 KB |
Output is correct |
| 5 |
Correct |
277 ms |
7940 KB |
Output is correct |
| 6 |
Correct |
310 ms |
11616 KB |
Output is correct |
| 7 |
Correct |
362 ms |
9752 KB |
Output is correct |
| 8 |
Correct |
116 ms |
15968 KB |
Output is correct |
| 9 |
Correct |
1185 ms |
26720 KB |
Output is correct |
| 10 |
Correct |
912 ms |
18712 KB |
Output is correct |
| 11 |
Correct |
949 ms |
21040 KB |
Output is correct |
| 12 |
Correct |
1190 ms |
24464 KB |
Output is correct |
| 13 |
Correct |
1077 ms |
25552 KB |
Output is correct |
