結果
| 問題 |
No.5021 Addition Pyramid
|
| コンテスト | |
| ユーザー |
SnowBeenDiding
|
| 提出日時 | 2025-03-21 14:26:21 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 1,435 ms / 2,000 ms |
| コード長 | 3,072 bytes |
| コンパイル時間 | 3,361 ms |
| コンパイル使用メモリ | 278,352 KB |
| 実行使用メモリ | 7,324 KB |
| スコア | 1,823,780 |
| 最終ジャッジ日時 | 2025-03-21 14:27:41 |
| 合計ジャッジ時間 | 76,421 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge3 |
| 純コード判定しない問題か言語 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 50 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
static const int N = 50;
static const int MOD = 100000000;
typedef long long ll;
struct SAParams {
double T0 = 1e4;
double Tend = 1e-4;
double alpha = 0.99995;
double timeLimit = 1.9;
int deltaRange = 1000000;
};
struct PyramidSolver {
int a[N][N], b[N][N];
int cur[N], best[N];
int bestScore;
SAParams params;
mt19937_64 rng;
uniform_int_distribution<int> uni_pos;
uniform_int_distribution<int> uni_delta;
uniform_real_distribution<double> uni_real;
PyramidSolver()
: rng(chrono::high_resolution_clock::now().time_since_epoch().count()),
uni_pos(0, N - 1), uni_delta(-params.deltaRange, params.deltaRange),
uni_real(0.0, 1.0) {}
void readInput() {
for (int i = 0; i < N; i++)
for (int j = 0; j <= i; j++)
cin >> a[i][j];
}
void build() {
for (int j = 0; j < N; j++)
b[N - 1][j] = (cur[j] % MOD + MOD) % MOD;
for (int i = N - 2; i >= 0; i--)
for (int j = 0; j <= i; j++)
b[i][j] = (b[i + 1][j] + b[i + 1][j + 1]) % MOD;
}
int evaluate() {
int mx = 0;
for (int i = 0; i < N; i++)
for (int j = 0; j <= i; j++) {
int diff = abs(a[i][j] - b[i][j]);
mx = max(mx, min(diff, MOD - diff));
}
return mx;
}
void anneal() {
auto start = chrono::high_resolution_clock::now();
for (int i = 0; i < N; i++)
cur[i] = uniform_int_distribution<int>(0, MOD - 1)(rng);
build();
int curScore = evaluate();
memcpy(best, cur, sizeof(cur));
bestScore = curScore;
double T = params.T0;
while (true) {
auto now = chrono::high_resolution_clock::now();
if (chrono::duration<double>(now - start).count() >=
params.timeLimit ||
T <= params.Tend)
break;
int pos = uni_pos(rng);
int old = cur[pos];
cur[pos] = (old + uni_delta(rng) + MOD) % MOD;
build();
int newScore = evaluate();
int diff = newScore - curScore;
if (diff < 0 || exp(-diff / T) > uni_real(rng)) {
curScore = newScore;
if (newScore < bestScore) {
bestScore = newScore;
memcpy(best, cur, sizeof(cur));
}
} else {
cur[pos] = old;
}
T *= params.alpha;
}
}
void output() const {
for (int i = 0; i < N; i++)
cout << best[i] << (i + 1 < N ? ' ' : '\n');
cerr << "Max Error: " << bestScore << '\n';
cerr << "Score: " << (50000000 - bestScore) << '\n';
}
void solve() {
readInput();
anneal();
output();
}
};
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
PyramidSolver solver;
solver.solve();
return 0;
}
SnowBeenDiding