Submission #4015737
Source Code Expand
#include <bits/stdc++.h>
#define FOR(v, a, b) for(int v = (a); v < (b); ++v)
#define FORE(v, a, b) for(int v = (a); v <= (b); ++v)
#define REP(v, n) FOR(v, 0, n)
#define REPE(v, n) FORE(v, 0, n)
#define REV(v, a, b) for(int v = (a); v >= (b); --v)
#define ALL(x) (x).begin(), (x).end()
#define ITR(it, c) for(auto it = (c).begin(); it != (c).end(); ++it)
#define RITR(it, c) for(auto it = (c).rbegin(); it != (c).rend(); ++it)
#define EXIST(c,x) ((c).find(x) != (c).end())
#define LLI long long int
#define fst first
#define snd second
#ifdef DEBUG
#include <boost/core/demangle.hpp>
#define dump(x) cerr << "L" << __LINE__ << ": in " << __PRETTY_FUNCTION__ << " \e[32;1m" << boost::core::demangle(typeid(x).name()) << "\e[37m" << " " << (#x) << " = " << (x) << "\e[m" << endl;
#else
#define dump(x)
#endif
using namespace std;
template <typename T> using V = vector<T>;
template <typename T, typename U> using P = pair<T,U>;
template <typename I> void join(ostream &ost, I s, I t, string d=" "){for(auto i=s; i!=t; ++i){if(i!=s)ost<<d; ost<<*i;}ost<<endl;}
template <typename T> istream& operator>>(istream &is, vector<T> &v){for(auto &a : v) is >> a; return is;}
template <typename T, typename U> istream& operator>>(istream &is, pair<T,U> &p){is >> p.first >> p.second; return is;}
template <typename T> ostream& operator<<(ostream &os, const vector<T> &v){os << "{";ITR(i,v){if(i!=v.begin())os << ","; os << *i;}os << "}"; return os;}
template <typename T, typename U> ostream& operator<<(ostream& os, const pair<T,U> &p){os << "(" << p.first << "," << p.second << ")"; return os;}
template <typename T> T& chmin(T &a, const T &b){return a = min(a,b);}
template <typename T> T& chmax(T &a, const T &b){return a = max(a,b);}
bool starts_with(const string &str, const string &prefix){
return str.size() >= prefix.size() && equal(ALL(prefix),str.begin());
}
class TopologicalSort{
public:
static bool dfs(int cur, vector<vector<int>> &graph, vector<int> &visit, vector<int> &ret){
if(visit[cur] == -1) return false;
if(visit[cur] == 0){
visit[cur] = -1;
for(auto &next : graph[cur]) if(!dfs(next,graph,visit,ret)) return false;
visit[cur] = 1;
ret.push_back(cur);
}
return true;
}
static bool tsort(vector<vector<int>> &graph, vector<int> &ret){
int n = graph.size();
vector<int> visit(n,0);
REP(i,n) if(visit[i] == 0) if(!TopologicalSort::dfs(i,graph,visit,ret)) return false;
reverse(ALL(ret));
return true;
}
};
int main(){
cin.tie(0);
ios::sync_with_stdio(false);
int N; cin >> N;
vector<vector<int>> graph(26);
map<char,int> char_int;
map<int,char> int_char;
REP(i,26){
char_int['a'+i] = 25-i;
int_char[25-i] = 'a'+i;
}
REP(_,N){
string a,b; cin >> a >> b;
if(a.size() > b.size() && starts_with(a,b)){
cout << -1 << endl;
return 0;
}
if(starts_with(b,a)) continue;
REP(i,min(a.size(),b.size())){
if(a[i] != b[i]){
graph[char_int[a[i]]].push_back(char_int[b[i]]);
break;
}
}
}
dump(graph);
vector<int> ret;
if(!TopologicalSort::tsort(graph,ret)){
cout << -1 << endl;
return 0;
}
string ans;
REP(i,26) ans.push_back(int_char[ret[i]]);
cout << ans << endl;
return 0;
}
Submission Info
Submission Time |
|
Task |
C - 山田山本問題 |
User |
you070707 |
Language |
C++14 (GCC 5.4.1) |
Score |
0 |
Code Size |
3382 Byte |
Status |
WA |
Exec Time |
10 ms |
Memory |
256 KB |
Judge Result
Set Name |
All |
Score / Max Score |
0 / 600 |
Status |
|
Set Name |
Test Cases |
All |
00_sample_01, 00_sample_02, 00_sample_03, 00_sample_04, 01_manual_00, 01_manual_01, 01_manual_02, 01_manual_03, 01_manual_04, 01_manual_05, 01_manual_06, 01_manual_07, 10_random_00, 10_random_01, 10_random_02, 10_random_03, 10_random_04, 10_random_05, 10_random_06, 10_random_07, 10_random_08, 10_random_09, 30_random_00, 30_random_01, 30_random_02, 30_random_03, 30_random_04, 30_random_05, 30_random_06, 30_random_07, 30_random_08, 30_random_09, 50_random_00, 50_random_01, 50_random_02, 50_random_03, 50_random_04, 50_random_05, 50_random_06, 50_random_07, 50_random_08, 50_random_09, 51_random_00, 51_random_01, 51_random_02 |
Case Name |
Status |
Exec Time |
Memory |
00_sample_01 |
AC |
1 ms |
256 KB |
00_sample_02 |
AC |
1 ms |
256 KB |
00_sample_03 |
AC |
1 ms |
256 KB |
00_sample_04 |
AC |
1 ms |
256 KB |
01_manual_00 |
AC |
1 ms |
256 KB |
01_manual_01 |
AC |
1 ms |
256 KB |
01_manual_02 |
AC |
1 ms |
256 KB |
01_manual_03 |
AC |
1 ms |
256 KB |
01_manual_04 |
WA |
1 ms |
256 KB |
01_manual_05 |
AC |
1 ms |
256 KB |
01_manual_06 |
AC |
1 ms |
256 KB |
01_manual_07 |
AC |
5 ms |
256 KB |
10_random_00 |
WA |
1 ms |
256 KB |
10_random_01 |
WA |
1 ms |
256 KB |
10_random_02 |
WA |
1 ms |
256 KB |
10_random_03 |
WA |
1 ms |
256 KB |
10_random_04 |
WA |
1 ms |
256 KB |
10_random_05 |
WA |
1 ms |
256 KB |
10_random_06 |
WA |
1 ms |
256 KB |
10_random_07 |
WA |
1 ms |
256 KB |
10_random_08 |
WA |
1 ms |
256 KB |
10_random_09 |
WA |
1 ms |
256 KB |
30_random_00 |
AC |
1 ms |
256 KB |
30_random_01 |
AC |
1 ms |
256 KB |
30_random_02 |
AC |
1 ms |
256 KB |
30_random_03 |
WA |
1 ms |
256 KB |
30_random_04 |
AC |
1 ms |
256 KB |
30_random_05 |
AC |
1 ms |
256 KB |
30_random_06 |
WA |
1 ms |
256 KB |
30_random_07 |
WA |
1 ms |
256 KB |
30_random_08 |
AC |
1 ms |
256 KB |
30_random_09 |
AC |
1 ms |
256 KB |
50_random_00 |
AC |
5 ms |
256 KB |
50_random_01 |
AC |
5 ms |
256 KB |
50_random_02 |
AC |
5 ms |
256 KB |
50_random_03 |
AC |
5 ms |
256 KB |
50_random_04 |
AC |
5 ms |
256 KB |
50_random_05 |
AC |
5 ms |
256 KB |
50_random_06 |
WA |
5 ms |
256 KB |
50_random_07 |
AC |
5 ms |
256 KB |
50_random_08 |
AC |
5 ms |
256 KB |
50_random_09 |
AC |
10 ms |
256 KB |
51_random_00 |
AC |
4 ms |
256 KB |
51_random_01 |
AC |
1 ms |
256 KB |
51_random_02 |
AC |
3 ms |
256 KB |