Contest Duration: ~ (local time) (180 minutes)

Submission #992169

Source Code Expand

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```#define _CRT_SECURE_NO_WARNINGS
#include "bits/stdc++.h"
using namespace std;

#define int int64_t

#define CHOOSE(a) CHOOSE2 a
#define CHOOSE2(a0,a1,a2,a3,x,...) x
#define REP1(i, s, cond, cal) for (signed i = signed(s); i cond; i cal)
#define REP2(i, s, n) REP1(i, s, < signed(n), ++)
#define REP3(i, n) REP2(i, 0, n)
#define rep(...) CHOOSE((__VA_ARGS__,REP1,REP2,REP3))(__VA_ARGS__)
#define rrep(i, s) rep(i, s, >= 0, --)

#define all(c) begin(c), end(c)
#define maxup(ans, x) (ans = (ans < x ? x : ans))
#define minup(ans, x) (ans = (ans > x ? x : ans))

#define breakif(cond) if(cond) break; else

using VV = vector<vector<int>>;
using V = vector<int>;
using P = pair<int, int>;
using IP = pair<int, P>;

template<typename T>
inline void input(vector<T>& v) { for (auto& x : v) cin >> x; }

int dfs(int now, VV &g, V& visited) {
visited[now] = true;
int sum = 1;
for (int x : g[now]) if (!visited[x]) {
sum += dfs(x, g, visited);
}
return sum;
}

signed main() {
int n, m; cin >> n >> m;
VV g(n);
V pre(m, -1);
rep(i, n) {
int k; cin >> k;
rep(j, k) {
int l; cin >> l;
l--;
if (pre[l] != -1) {
g[i].push_back(pre[l]);
g[pre[l]].push_back(i);
}
pre[l] = i;
}
}

V vs(n);
int ans = dfs(0, g, vs);
cout << (ans == n ? "YES" : "NO") << endl;

system("pause");
}```

Submission Info

Submission Time 2016-11-26 12:50:34+0900 C - Interpretation tosaka2 C++14 (GCC 5.4.1) 400 1367 Byte AC 74 ms 12160 KB

Compile Error

```./Main.cpp: In function ‘int main()’:
./Main.cpp:59:17: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result [-Wunused-result]
system("pause");
^
```

Judge Result

Set Name Score / Max Score Test Cases
sample 0 / 0 sample-01.txt, sample-02.txt
dataset1 200 / 200 sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt
dataset2 200 / 200 sample-01.txt, sample-02.txt, 01-01.txt, 01-02.txt, 01-03.txt, 01-04.txt, 01-05.txt, 01-06.txt, 01-07.txt, 01-08.txt, 01-09.txt, 01-10.txt, 02-01.txt, 02-02.txt, 02-03.txt, 02-04.txt, 02-05.txt, 02-06.txt, 02-07.txt, 02-08.txt, 02-09.txt, 02-10.txt, 02-11.txt, 02-12.txt, 02-13.txt
Case Name Status Exec Time Memory
01-01.txt 4 ms 504 KB
01-02.txt 4 ms 500 KB
01-03.txt 4 ms 504 KB
01-04.txt 4 ms 512 KB
01-05.txt 4 ms 504 KB
01-06.txt 4 ms 504 KB
01-07.txt 4 ms 500 KB
01-08.txt 4 ms 504 KB
01-09.txt 4 ms 504 KB
01-10.txt 5 ms 632 KB
02-01.txt 39 ms 2552 KB
02-02.txt 65 ms 8056 KB
02-03.txt 43 ms 3064 KB
02-04.txt 58 ms 5112 KB
02-05.txt 66 ms 7032 KB
02-06.txt 58 ms 5112 KB
02-07.txt 65 ms 6392 KB
02-08.txt 56 ms 9080 KB
02-09.txt 74 ms 12160 KB
02-10.txt 53 ms 6272 KB
02-11.txt 52 ms 6392 KB
02-12.txt 49 ms 4600 KB
02-13.txt 50 ms 4600 KB
sample-01.txt 4 ms 500 KB
sample-02.txt 4 ms 504 KB