結果
| 問題 |
No.1226 I hate Robot Arms
|
| コンテスト | |
| ユーザー |
milanis48663220
|
| 提出日時 | 2020-11-23 21:23:42 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
TLE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 6,523 bytes |
| コンパイル時間 | 1,957 ms |
| コンパイル使用メモリ | 130,836 KB |
| 最終ジャッジ日時 | 2025-01-16 05:16:48 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 18 TLE * 10 |
ソースコード
#include <iostream>
#include <algorithm>
#include <iomanip>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <cassert>
#include <cmath>
#define debug_value(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << #x << "=" << x << endl;
#define debug(x) cerr << "line" << __LINE__ << ":<" << __func__ << ">:" << x << endl;
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
using namespace std;
typedef long long ll;
template <typename T, typename S>
struct LazySegmentTree {
int n;
T unit;
S unit_lazy;
vector<T> node;
vector<S> lazy;
vector<bool> lazyFlag;
T (*calc)(T, T);
S (*propagateLazy)(S, S);
T (*merge)(S, T);
LazySegmentTree(vector<T> v, T UNIT, S UNIT_LAZY, T (*_calc)(T, T), S (*_propagateLazy)(S, S), T (*_merge)(S, T)) {
int sz = (int)v.size();
unit = UNIT;
unit_lazy = UNIT_LAZY;
calc = _calc;
propagateLazy = _propagateLazy;
merge = _merge;
n = 1; while(n < sz) n *= 2;
node.resize(2*n-1, unit);
lazy.resize(2*n-1, UNIT_LAZY);
lazyFlag.resize(2*n-1, false);
for(int i=0; i<sz; i++) node[i+n-1] = v[i];
for(int i=n-2; i>=0; i--) node[i] = calc(node[i*2+1], node[i*2+2]);
}
void lazyEvaluate(int k, int l, int r) {
if(lazyFlag[k]) {
node[k] = merge(lazy[k], node[k]);
if(r - l > 1) {
lazy[k*2+1] = propagateLazy(lazy[k*2+1], lazy[k]);
lazy[k*2+2] = propagateLazy(lazy[k*2+2], lazy[k]);
lazyFlag[k*2+1] = lazyFlag[k*2+2] = true;
}
lazyFlag[k] = false;
lazy[k] = unit_lazy;
}
}
//[a, b)
//区間[a, b]への更新に対してはupdate(a, b+1, x)と呼ぶ
void update(int a, int b, S x, int k=0, int l=0, int r=-1) {
if(r < 0) r = n;
lazyEvaluate(k, l, r);
if(b <= l || r <= a) return;
if(a <= l && r <= b) {
lazy[k] = propagateLazy(lazy[k], x);
lazyFlag[k] = true;
lazyEvaluate(k, l, r);
}
else {
update(a, b, x, 2*k+1, l, (l+r)/2);
update(a, b, x, 2*k+2, (l+r)/2, r);
node[k] = calc(node[2*k+1], node[2*k+2]);
}
}
//[a, b)
//区間[a, b]へのクエリに対してはquery(a, b+1)と呼ぶ
T query(int a, int b, int k=0, int l=0, int r=-1) {
if(r < 0) r = n;
lazyEvaluate(k, l, r);
if(b <= l || r <= a) return unit;
if(a <= l && r <= b) return node[k];
T vl = query(a, b, 2*k+1, l, (l+r)/2);
T vr = query(a, b, 2*k+2, (l+r)/2, r);
return calc(vl, vr);
}
};
template <typename T>
struct matrix{
int n, m;
vector<vector<T>> dat;
matrix(int n_ = 0, int m_ = 0){
n = n_; m = m_;
for(int i = 0; i < n; i++){
dat.push_back(vector<T>(m));
}
}
vector<T>& operator[](int x) {
return dat[x];
}
};
template <typename T>
void prod(matrix<T> a, matrix<T> b, matrix<T> &ans){
assert(a.m == b.n);
for(int i = 0; i < a.n; i++){
for(int j = 0; j < a.m; j++){
ans.dat[i][j] = 0;
for(int k = 0; k < b.m; k++){
ans.dat[i][j] += (a.dat[i][k]*b.dat[k][j]);
}
}
}
}
template <typename T>
matrix<T> prod(matrix<T> a, matrix<T> b){
assert(a.m == b.n);
matrix<T> ans(a.n, b.m);
for(int i = 0; i < a.n; i++){
for(int j = 0; j < a.m; j++){
ans.dat[i][j] = 0;
for(int k = 0; k < b.n; k++){
ans.dat[i][j] += (a.dat[i][k]*b.dat[k][j]);
}
}
}
return ans;
}
template <typename T>
matrix<T> add(matrix<T> a, matrix<T> b){
assert(a.n == b.n);
assert(a.m == b.m);
matrix<T> ans(a.n, a.m);
for(int i = 0; i < a.n; i++){
for(int j = 0; j < a.m; j++){
ans[i][j] = a[i][j]+b[i][j];
}
}
return ans;
}
template <typename T>
void copy_mat(matrix<T> a, matrix<T> &b){
assert(a.n == b.n);
assert(a.m == b.m);
for(int i = 0; i < a.n; i++){
for(int j = 0; j < a.m; j++){
b.dat[i][j] = a.dat[i][j];
}
}
}
template <typename T>
void pow_mat(matrix<T> a, ll n, matrix<T> &ans){
matrix<T> buf(a.n, a.n);
matrix<T> tmp(a.n, a.n);
copy_mat(a, tmp);
for(int i = 0; i < a.n; i++) {
for(int j = 0; j < a.n; j++){
ans.dat[i][j] = 0;
}
ans.dat[i][i] = 1;
}
for(int i = 0; i <= 30; i++){
ll m = (ll)1 << i;
if(m&n){
prod(tmp, ans, buf);
copy_mat(buf, ans);
}
prod(tmp, tmp, buf);
copy_mat(buf, tmp);
}
}
template <typename T>
void print_mat(matrix<T> a){
for(int i = 0; i < a.n; i++){
for(int j = 0; j < a.m; j++){
cout << a.dat[i][j] << ' ';
}
cout << endl;
}
}
struct lazy{
double theta, d;
};
matrix<double> merge(lazy l, matrix<double> node){
assert(node.n == 2);
assert(node.m == 1);
matrix<double> ans(2, 1);
ans[0][0] = l.d*(cos(l.theta)*node[0][0]-sin(l.theta)*node[1][0]);
ans[1][0] = l.d*(sin(l.theta)*node[0][0]+cos(l.theta)*node[1][0]);
return ans;
}
lazy propagate(lazy x, lazy y){
return (lazy){x.theta+y.theta, x.d*y.d};
}
double d[100000], theta[100000];
int main(){
ios::sync_with_stdio(false);
cin.tie(0);
cout << setprecision(10) << fixed;
int n, q; cin >> n >> q;
matrix<double> unit_vec(2, 1), unit_mat(2, 2);
unit_mat[0][0] = 1.0; unit_mat[1][1] = 1.0;
vector<matrix<double>> v(n);
for(int i = 0; i < n; i++) {
matrix<double> m(2, 1);
m[0][0] = 1.0;
v[i] = m;
d[i] = 1.0;
}
LazySegmentTree<matrix<double>,lazy> sgt(v, unit_vec, (lazy){0.0, 1.0}, add, propagate, merge);
for(int _ = 0; _ < q; _++){
int t, i; cin >> t >> i; i--;
double x;
if(t == 0){
cin >> x;
x = x*M_PI/180.0;
sgt.update(i, n, (lazy){x-theta[i], 1.0});
theta[i] = x;
}else if(t == 1){
cin >> x;
sgt.update(i, i+1, (lazy){0.0, x/d[i]});
d[i] = x;
}else{
auto r = sgt.query(0, i+1);
cout << r[0][0] << ' ' << r[1][0] << endl;
}
}
}
milanis48663220