結果

問題 No.1266 7 Colors
ユーザー Ricky_pon
提出日時 2020-10-24 18:50:29
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 277 ms / 3,000 ms
コード長 2,852 bytes
コンパイル時間 2,474 ms
コンパイル使用メモリ 199,732 KB
最終ジャッジ日時 2025-01-15 15:13:23
ジャッジサーバーID
(参考情報)
judge5 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 19
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:75:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   75 |     scanf("%d%d%d", &n, &m, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
main.cpp:90:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   90 |         scanf("%d%d", &a, &b);
      |         ~~~~~^~~~~~~~~~~~~~~~
main.cpp:102:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  102 |         scanf("%d%d%d", &c, &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

ソースコード

diff #
プレゼンテーションモードにする

#include <bits/stdc++.h>
//#include <atcoder/all>
#define For(i, a, b) for (int(i) = (int)(a); (i) < (int)(b); ++(i))
#define rFor(i, a, b) for (int(i) = (int)(a)-1; (i) >= (int)(b); --(i))
#define rep(i, n) For((i), 0, (n))
#define rrep(i, n) rFor((i), (n), 0)
#define fi first
#define se second
using namespace std;
typedef long long lint;
typedef unsigned long long ulint;
typedef pair<int, int> pii;
typedef pair<lint, lint> pll;
template <class T>
bool chmax(T &a, const T &b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <class T>
bool chmin(T &a, const T &b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T>
T div_floor(T a, T b) {
if (b < 0) a *= -1, b *= -1;
return a >= 0 ? a / b : (a + 1) / b - 1;
}
template <class T>
T div_ceil(T a, T b) {
if (b < 0) a *= -1, b *= -1;
return a > 0 ? (a - 1) / b + 1 : a / b;
}
constexpr lint mod = 1000000007;
constexpr lint INF = mod * mod;
constexpr int MAX = 200010;
typedef struct UnionFindTree {
vector<int> par;
UnionFindTree(int n) { par.resize(n, -1); }
bool is_root(int x) { return par[x] < 0; }
int find(int x) {
if (is_root(x)) return x;
return par[x] = find(par[x]);
}
int size(int x) { return -par[find(x)]; }
bool unite(int x, int y) {
x = find(x);
y = find(y);
if (x == y) return false;
if (size(x) < size(y)) swap(x, y);
par[x] += par[y];
par[y] = x;
return true;
}
bool same(int x, int y) { return find(x) == find(y); }
} UF;
int main() {
int n, m, q;
scanf("%d%d%d", &n, &m, &q);
string s[n];
rep(i, n) cin >> s[i];
vector<int> G[n];
UF uf(n * 7);
rep(i, n) {
rep(c, 7) {
int nc = (c + 1) % 7;
if (s[i][c] == '1' && s[i][nc] == '1') {
uf.unite(i * 7 + c, i * 7 + nc);
}
}
}
rep(_, m) {
int a, b;
scanf("%d%d", &a, &b);
--a;
--b;
G[a].push_back(b);
G[b].push_back(a);
rep(c, 7) if (s[a][c] == '1' && s[b][c] == '1') {
uf.unite(a * 7 + c, b * 7 + c);
}
}
rep(_, q) {
int c, x, y;
scanf("%d%d%d", &c, &x, &y);
if (c == 1) {
--x;
--y;
s[x][y] = '1';
int ny = (y + 1) % 7, py = (y + 6) % 7;
if (s[x][ny] == '1') {
uf.unite(x * 7 + y, x * 7 + ny);
}
if (s[x][py] == '1') {
uf.unite(x * 7 + y, x * 7 + py);
}
for (auto nv : G[x]) {
if (s[nv][y] == '1') uf.unite(x * 7 + y, nv * 7 + y);
}
} else {
--x;
printf("%d\n", uf.size(x * 7));
}
}
}
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