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AOJ1236.cpp
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#include <bits/stdc++.h>
using namespace std;
using VS = vector<string>; using LL = long long;
using VI = vector<int>; using VVI = vector<VI>;
using PII = pair<int, int>; using PLL = pair<LL, LL>;
using VL = vector<LL>; using VVL = vector<VL>;
#define ALL(a) begin((a)),end((a))
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(a) int((a).size())
#define SORT(c) sort(ALL((c)))
#define RSORT(c) sort(RALL((c)))
#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))
#define FOR(i, s, e) for (int(i) = (s); (i) < (e); (i)++)
#define FORR(i, s, e) for (int(i) = (s); (i) > (e); (i)--)
#define debug(x) cerr << #x << ": " << x << endl
const int INF = 1e9; const LL LINF = 1e16;
const LL MOD = 1000000007; const double PI = acos(-1.0);
int DX[8] = { 0, 0, 1, -1, 1, 1, -1, -1 }; int DY[8] = { 1, -1, 0, 0, 1, -1, 1, -1 };
/* ----- 2018/05/02 Problem: AOJ 1236 / Link: http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1236 ----- */
/* ------問題------
グラフの順回路が与えられる。グラフを復元せよ。ルールは以下
A:はじめて訪れた頂点はその頂点の入次数が正の値で示される。
B:一度訪れた頂点に来たときは、今の深さ-その頂点の深さが与えられる。ただし負の値
-----問題ここまで----- */
/* -----解説等-----
一意に定まるグラフなので、これは頑張る!
----解説ここまで---- */
int v = 0;
void dfs(int& id, int dep, const VI& a, VI& deg, VVI& res,VI& dv) {
deg[v] += a[id];
dv[dep] = v;
int nv = v++;
//cout << v << "," << nv << "," << id << endl;
while (id < SZ(a) && deg[nv] > 0) {
int val = a[++id];
if (val > 0) {
deg[nv]--; deg[v]--;
res[nv].emplace_back(v);
res[v].emplace_back(nv);
dfs(id, dep + 1, a, deg, res,dv);
}
else {
int u = dv[dep + val];
deg[u]--; deg[nv]--;
res[u].emplace_back(nv);
res[nv].emplace_back(u);
}
}
}
int main() {
cin.tie(0);
ios_base::sync_with_stdio(false);
int Case;
cin >> Case;
FOR(kim, 0, Case) {
int val, N = 0;
VI a;
while (cin >> val, val) {
if (val > 0)N++;
a.push_back(val);
}
v = 0;
VI deg(N, 0);
VVI res(N, VI());
VI dv(N);
int id = 0;
dfs(id, 0, a, deg, res,dv);
//debug(v);
FOR(i, 0, N) {
cout << i + 1;
SORT(res[i]);
FOR(k, 0, SZ(res[i])) {
cout << " " << res[i][k] + 1;
}
cout << "\n";
}
}
return 0;
}