結果
| 問題 |
No.1780 [Cherry Anniversary] 真冬に咲く26の櫻の木
|
| コンテスト | |
| ユーザー |
Forested
|
| 提出日時 | 2021-12-09 14:24:41 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 208 ms / 2,000 ms |
| コード長 | 3,670 bytes |
| コンパイル時間 | 1,337 ms |
| コンパイル使用メモリ | 122,576 KB |
| 最終ジャッジ日時 | 2025-01-26 07:15:35 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 42 |
ソースコード
#include <algorithm>
#include <array>
#include <bitset>
#include <cassert>
#include <cmath>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <utility>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#define OVERRIDE(a, b, c, d, ...) d
#define REP2(i, n) for (i32 i = 0; i < (n); ++i)
#define REP3(i, m, n) for (i32 i = (m); i < (n); ++i)
#define REP(...) OVERRIDE(__VA_ARGS__, REP3, REP2)(__VA_ARGS__)
#define PER(i, n) for (i32 i = (n) - 1; i >= 0; --i)
#define ALL(x) begin(x), end(x)
using namespace std;
using u32 = unsigned int;
using u64 = unsigned long long;
using u128 = __uint128_t;
using i32 = signed int;
using i64 = signed long long;
using i128 = __int128_t;
template <typename T>
using Vec = vector<T>;
template <typename T>
bool chmin(T &x, const T &y) {
if (x > y) {
x = y;
return true;
}
return false;
}
template <typename T>
bool chmax(T &x, const T &y) {
if (x < y) {
x = y;
return true;
}
return false;
}
[[maybe_unused]] constexpr i32 inf = 1000000100;
[[maybe_unused]] constexpr i64 inf64 = 3000000000000000100;
struct SetIO {
SetIO() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << fixed << setprecision(10);
}
} set_io;
const int cmax = 16;
array<array<i64, cmax>, cmax> cat(const array<array<i64, cmax>, cmax> &a, const array<array<i64, cmax>, cmax> &b) {
array<array<i64, cmax>, cmax> c;
REP(i, cmax) REP(j, cmax) c[i][j] = -inf64;
REP(i, cmax) REP(j, cmax) REP(k, cmax) {
if (a[i][j] == -inf64 || b[j][k] == -inf64) continue;
chmax(c[i][k], a[i][j] + b[j][k]);
}
return c;
}
array<array<i64, cmax>, cmax> doubling(array<array<i64, cmax>, cmax> a, i32 k) {
array<array<i64, cmax>, cmax> self = a;
array<array<i64, cmax>, cmax> ret;
REP(i, cmax) REP(j, cmax) {
ret[i][j] = (i == j ? 0 : -inf64);
}
while (k) {
if (k % 2) {
ret = cat(ret, self);
}
self = cat(self, self);
k /= 2;
}
return ret;
}
string dbg(i64 x) {
if (x == -inf64) {
return "Impossible";
} else {
return to_string(x);
}
}
int main() {
array<i32, 26> c;
REP(i, 26) {
cin >> c[i];
--c[i];
}
array<i32, 26> k;
REP(i, 26) cin >> k[i];
i32 n;
cin >> n;
Vec<string> s(n);
Vec<i32> a(n), b(n);
Vec<i64> e(n);
REP(i, n) {
cin >> s[i] >> a[i] >> b[i] >> e[i];
--a[i];
--b[i];
}
array<array<array<i64, cmax>, cmax>, 26> dbs;
REP(ch, 26) {
array<array<i64, cmax>, cmax> mat;
REP(i, cmax) REP(j, cmax) mat[i][j] = -inf64;
REP(i, cmax) mat[i][i] = 0;
REP(i, n) {
bool cont = false;
for (char c : s[i]) {
if (c == 'A' + ch) cont = true;
}
if (cont) {
chmax(mat[a[i]][b[i]], e[i]);
chmax(mat[b[i]][a[i]], e[i]);
}
}
dbs[ch] = doubling(mat, k[ch]);
}
/*REP(ch, 1) {
REP(i, 10) REP(j, 10) {
cout << dbg(dbs[ch][i][j]) << " \n"[j + 1 == 10];
}
cout << "\n";
}*/
i64 ans = -inf64;
REP(to, cmax) {
i64 sum = 0;
REP(ch, 26) {
if (dbs[ch][c[ch]][to] == -inf64 || sum == -inf64) {
sum = -inf64;
} else {
sum += dbs[ch][c[ch]][to];
}
}
chmax(ans, sum);
}
cout << dbg(ans) << '\n';
}
Forested