結果
問題 | No.241 出席番号(1) |
ユーザー |
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提出日時 | 2015-07-11 02:07:59 |
言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
結果 |
RE
(最新)
AC
(最初)
|
実行時間 | - |
コード長 | 2,689 bytes |
コンパイル時間 | 1,119 ms |
コンパイル使用メモリ | 95,484 KB |
実行使用メモリ | 6,824 KB |
最終ジャッジ日時 | 2024-11-21 10:06:11 |
合計ジャッジ時間 | 10,693 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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ファイルパターン | 結果 |
---|---|
sample | RE * 3 |
other | RE * 29 |
コンパイルメッセージ
main.cpp: In member function ‘void Graph::add_edge(int, int, int)’: main.cpp:51:69: warning: narrowing conversion of ‘(&((Graph*)this)->Graph::G.std::vector<std::vector<Edge> >::operator[](((std::vector<std::vector<Edge> >::size_type)to)))->std::vector<Edge>::size()’ from ‘std::vector<Edge>::size_type’ {aka ‘long unsigned int’} to ‘int’ [-Wnarrowing] 51 | G[from].push_back((Edge){to, cap, G[to].size()}); | ~~~~~~~~~~^~ main.cpp:52:72: warning: narrowing conversion of ‘((&((Graph*)this)->Graph::G.std::vector<std::vector<Edge> >::operator[](((std::vector<std::vector<Edge> >::size_type)from)))->std::vector<Edge>::size() - 1)’ from ‘std::vector<Edge>::size_type’ {aka ‘long unsigned int’} to ‘int’ [-Wnarrowing] 52 | G[to].push_back((Edge){from, 0, G[from].size() - 1}); | ~~~~~~~~~~~~~~~^~~ main.cpp: In member function ‘int Graph::bfs(int)’: main.cpp:71:17: warning: no return statement in function returning non-void [-Wreturn-type] 71 | } | ^
ソースコード
#include <iostream>#include <algorithm>#include <string>#include <vector>#include <queue>#include <stack>#include <set>#include <map>#include <cstdio>#include <cstdlib>#include <cstring>#include <cmath>#include <numeric>#include <bitset>#include <complex>#define rep(x, to) for (int x = 0; x < (to); x++)#define REP(x, a, to) for (int x = (a); x < (to); x++)#define foreach(itr, x) for (typeof((x).begin()) itr = (x).begin(); itr != (x).end(); itr++)#define EPS (1e-14)using namespace std;typedef long long ll;typedef pair<int, int> PII;typedef pair<ll, ll> PLL;typedef complex<double> Complex;typedef vector< vector<int> > Mat;int N;int a[55];struct Edge {int to;int cap;int rev;};class Graph {public:vector < vector<Edge> > G;vector<int> level;vector<int> iter;Graph(int n) {G.resize(n + 5);level.resize(n + 5, 0);iter.resize(n + 5, 0);}void add_edge(int from, int to, int cap) {G[from].push_back((Edge){to, cap, G[to].size()});G[to].push_back((Edge){from, 0, G[from].size() - 1});}//s:sourceint bfs(int s) {for (int i = 0; i < level.size(); i++) level[i] = -1;queue<int> que;level[s] = 0;que.push(s);while (!que.empty()) {int v = que.front(); que.pop();for (int i = 0; i < G[v].size(); i++) {Edge &e = G[v][i];if (e.cap > 0 && level[e.to] < 0) {level[e.to] = level[v] + 1;que.push(e.to);}}}}//t:sinkint dfs(int v, int t, int f) {if (v == t) return f;for (int &i = iter[v]; i < G[v].size(); i++) {Edge &e = G[v][i];if (e.cap > 0 && level[v] < level[e.to]) {int d = dfs(e.to, t, min(f, e.cap));if (d > 0) {e.cap -= d;G[e.to][e.rev].cap += d;return d;}}}return 0;}//s:source//t:sinkint max_flow(int s, int t) {int flow = 0;for (;;) {bfs(s);if (level[t] < 0) return flow;for (int i = 0; i < iter.size(); i++) iter[i] = 0;int f;while (f = dfs(s, t, 1e+9 + 7)) {flow += f;}}}};void solve() {Graph graph(105);int S = N + N;int T = N + N + 1;//u -> v;rep(i, N) {rep(j, N) {if (j == a[i]) continue;graph.add_edge(i, j + N, 1);}}//S -> u; v -> T;rep(i, N) {graph.add_edge(S, i, 1);graph.add_edge(i + N, T, 1);}int flow = graph.max_flow(S, T);if (flow != N) {cout << -1 << endl;} else {rep(i, N) {rep(j, graph.G[i].size()) {Edge &e = graph.G[i][j];if (graph.G[e.to][e.rev].cap > 0) {cout << e.to - N << endl;break;}}}}}int main() {cin >> N;rep(i, N) cin >> a[i];solve();return 0;}