結果
| 問題 |
No.3302 Sense Battle
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2025-10-05 17:14:05 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 1,902 ms / 2,000 ms |
| コード長 | 6,692 bytes |
| コンパイル時間 | 2,638 ms |
| コンパイル使用メモリ | 336,336 KB |
| 実行使用メモリ | 7,716 KB |
| 最終ジャッジ日時 | 2025-10-05 17:14:45 |
| 合計ジャッジ時間 | 39,882 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 18 |
ソースコード
#ifdef __GNUC__
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
// #pragma GCC target ("avx2")
#endif
#include <iostream>
#include <fstream>
#include <iomanip>
#include <vector>
#include <array>
#include <algorithm>
#include <utility>
#include <string>
#include <queue>
#include <stack>
#include <set>
#include <unordered_set>
#include <unordered_map>
#include <bitset>
#include <random>
#include <functional>
#include <cmath>
#include <cassert>
#include <atcoder/fenwicktree>
#ifdef _MSC_VER
#include <intrin.h>
#else
#include <x86intrin.h>
#endif
struct xorshift64 {
unsigned long long int x = 88172645463325252ULL;
inline unsigned short nextUShort() {
x = x ^ (x << 7);
return x = x ^ (x >> 9);
}
inline unsigned int nextUShortMod(unsigned long long int mod) {
x = x ^ (x << 7);
x = x ^ (x >> 9);
return ((x & 0x0000ffffffffffff) * mod) >> 48;
}
inline unsigned int nextUInt() {
x = x ^ (x << 7);
return x = x ^ (x >> 9);
}
inline unsigned int nextUIntMod(unsigned long long int mod) {
x = x ^ (x << 7);
x = x ^ (x >> 9);
return ((x & 0x00000000ffffffff) * mod) >> 32;
}
inline unsigned long long int nextULL() {
x = x ^ (x << 7);
return x = x ^ (x >> 9);
}
inline double nextDouble() {
x = x ^ (x << 7);
x = x ^ (x >> 9);
return (double)x * 5.42101086242752217e-20;
}
};
struct timer {
double t = 0.0;
double lastStop = 0.0;
bool stopped = false;
timer() {
restart();
}
inline void restart() {
t = now();
stopped = false;
}
inline void start() {
if (stopped) {
t += now() - lastStop;
stopped = false;
}
}
inline void stop() {
if (!stopped) {
lastStop = now();
stopped = true;
}
}
inline double time() {
if (stopped) return lastStop - t;
else return now() - t;
}
inline double now() {
#ifdef _MSC_VER
#ifdef LOCAL
return __rdtsc() * 2.857142857142857e-10; // 1 / 3.5e9, for local (Ryzen 9 3950X)
#else
//return __rdtsc() * 3.5714285714285715e-10; // 1 / 2.8e9, for AWS EC2 C3 (Xeon E5-2680 v2)
//return __rdtsc() * 3.4482758620689656e-10; // 1 / 2.9e9, for AWS EC2 C4 (Xeon E5-2666 v3)
//return __rdtsc() * 3.333333333333333e-10; // 1 / 3.0e9, for AWS EC2 C5 (Xeon Platinum 8124M / Xeon Platinum 8275CL)
return __rdtsc() * 4.3478260869565215e-10; // 1 / 2.3e9, for yukicoder judge
#endif
#else
unsigned long long l, h;
__asm__ ("rdtsc" : "=a"(l), "=d"(h));
#ifdef LOCAL
return (double)(l | h << 32) * 2.857142857142857e-10; // 1 / 3.5e9, for local (Ryzen 9 3950X)
#else
//return (double)(l | h << 32) * 3.5714285714285715e-10; // 1 / 2.8e9, for AWS EC2 C3 (Xeon E5-2680 v2)
//return (double)(l | h << 32) * 3.4482758620689656e-10; // 1 / 2.9e9, for AWS EC2 C4 (Xeon E5-2666 v3)
//return (double)(l | h << 32) * 3.333333333333333e-10; // 1 / 3.0e9, for AWS EC2 C5 (Xeon Platinum 8124M / Xeon Platinum 8275CL)
return (double)(l | h << 32) * 4.3478260869565215e-10; // 1 / 2.3e9, for yukicoder judge
#endif
#endif
}
};
using namespace std;
using namespace atcoder;
typedef long long int ll;
typedef unsigned long long int ull;
typedef pair<int, int> Pii;
typedef unsigned char uchar;
const ll mod = 1000000007;
timer theTimer;
xorshift64 theRandom;
mt19937 theMersenne(1);
// hyper parameters
// structs
// enums
// constants
// inputs
int turn_num;
vector<ll> a, b;
// outputs
ll ans;
// environment
// state
fenwick_tree<ll> is_attack; // 0 -> a, 1 -> b
fenwick_tree<ll> attack_gain;
// score
ll total_score;
void get_first_input() {
cin >> turn_num;
a = vector<ll>(turn_num);
b = vector<ll>(turn_num);
for (int i = 0; i < turn_num; i++) {
cin >> a[i] >> b[i];
}
}
void init() {
is_attack = fenwick_tree<ll>(turn_num);
attack_gain = fenwick_tree<ll>(turn_num);
for (int i = 0; i < turn_num; i++) {
attack_gain.add(i, a[i]);
}
}
void update_score_partial(int turn_idx) {
if (is_attack.sum(turn_idx, turn_idx + 1) == 0) {
// a -> b
attack_gain.add(turn_idx, -a[turn_idx]);
is_attack.add(turn_idx, 1);
total_score += b[turn_idx] + attack_gain.sum(0, turn_idx);
total_score -= a[turn_idx] * is_attack.sum(turn_idx + 1, turn_num);
}
else {
// b -> a
attack_gain.add(turn_idx, a[turn_idx]);
is_attack.add(turn_idx, -1);
total_score -= b[turn_idx] + attack_gain.sum(0, turn_idx);
total_score += a[turn_idx] * is_attack.sum(turn_idx + 1, turn_num);
}
}
void update_score_full() {
total_score = 0;
ll total_attack_gain = 0;
for (int i = 0; i < turn_num; i++) {
if (is_attack.sum(i, i + 1) == 0) {
total_attack_gain += a[i];
}
else {
total_score += total_attack_gain + b[i];
}
}
}
ll get_score() {
return total_score;
}
void solve() {
update_score_full();
ll score = get_score();
ll last_score = score;
ll best_score = score;
const double base_temperature = 1e15;
const double target_temperature = 1e-2;
// const double decay_rate = 4e-5;
double temperature = base_temperature;
int iter_count = 0;
double time_start = theTimer.time();
const double time_limit = 1.900;
while (theTimer.time() < time_limit) {
double roll = theRandom.nextDouble();
if (roll < 1.00) {
int t = theRandom.nextUIntMod(turn_num);
update_score_partial(t);
score = get_score();
#ifdef DEBUG
if (iter_count % 100000 == 0) cerr << iter_count << " " << score << " " << last_score << " " << best_score << " " << temperature << " " << theTimer.time() << endl;
#endif
if (score >= last_score) {
last_score = score;
if (score > best_score) {
best_score = score;
}
}
else if (theRandom.nextDouble() < exp(double(score - last_score) / temperature)) { // accept
last_score = score;
}
else { // rollback
update_score_partial(t);
}
}
// temperature *= 1.0 - decay_rate;
temperature = exp(log(base_temperature) - ((log(base_temperature) - log(target_temperature)) * ((theTimer.time() - time_start) * (1.0 / (time_limit - time_start)))));
iter_count++;
}
cerr << "iter_count = " << iter_count << endl;
cerr << "score = " << score << endl;
cerr << "best_score = " << best_score << endl;
cerr << "temperature = " << temperature << endl;
ans = best_score;
}
void output_ans() {
cout << ans << endl;
}
int main(int argc, char *argv[]) {
cin.tie(0);
ios::sync_with_stdio(false);
get_first_input();
init();
solve();
output_ans();
return 0;
}