QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#565686#9319. Bull Farmucup-team1001WA 237ms32600kbC++236.8kb2024-09-15 22:01:022024-09-15 22:01:02

Judging History

你现在查看的是最新测评结果

  • [2024-09-15 22:01:02]
  • 评测
  • 测评结果:WA
  • 用时:237ms
  • 内存:32600kb
  • [2024-09-15 22:01:02]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;


const int mod = 998244353;

template<typename T>
ostream &operator<<(ostream &os, const vector<T> &v) {
    os << "{";
    for (const T &x: v) {
        os << x << " ";
    }
    os << "}";
    return os;
}


using i64 = long long;


class Tarjan {
    int n;
    vector<vector<int>> G;
    vector<int> scc;
    vector<int> dfn, up, du;
public:

    Tarjan(int _n) : n(_n), G(n + 1), scc(n + 1) {
//        iota(ys.begin(), ys.end(), 0);
        iota(scc.begin(), scc.end(), 0);
    }

    void init() {
//        cerr << "init" << endl;
        int _n = n;
        // tarjan 更新 scc ys n
        {
            vector<int> _dfn(n + 1), _low(n + 1);
            vector<int> _scc(n + 1);
            vector<int> _ys(n + 1);
            vector<int> _stk(n + 1);
            int _top = 0;
            int _scc_cnt = 1;
            int _dfn_cnt = 0;
            function<void(int)> tarjan = [&](int u) {
                _dfn[u] = _low[u] = ++_dfn_cnt;
                _stk[++_top] = u;
                for (int v: G[u]) {
                    if (!_dfn[v]) {
                        tarjan(v);
                        _low[u] = min(_low[u], _low[v]);
                    } else if (!_scc[v]) {
                        _low[u] = min(_low[u], _dfn[v]);
                    }
                }
                if (_dfn[u] == _low[u]) {
                    int v;
                    do {
                        v = _stk[_top--];
                        _scc[v] = _scc_cnt;
                    } while (v != u);
                    _scc_cnt++;
                }
            };
            for (int i = 1; i <= _n; i++) {
                if (!_dfn[i]) {
                    tarjan(i);
                }
            }
            // _ys - > ys
//            int nn = ys.size() - 1;
//            for (int i = 1; i <= nn; i++) {
//                ys[i] = _ys[ys[i]];
//            }
//            cerr << _scc << endl;
            int nn = scc.size() - 1;
            for (int i = 1; i <= nn; i++) {
                scc[i] = _scc[scc[i]];
//                cerr << i << " " << scc[i] << endl;
            }
//            cerr << scc << endl;
//            scc = _scc;
            n = _scc_cnt - 1;
            // 更新图
            {
                vector<vector<int>> _G(n + 1);

                vector<int> _du(n + 1);
                for (int i = 1; i <= _n; i++) {
                    for (int j: G[i]) {
//                        cerr << i << " " << j << endl;
                        if (_scc[i] != _scc[j]) {
                            _G[_scc[i]].push_back(_scc[j]);
                            _du[_scc[j]]++;
                        }
                    }
                }
                G = _G;
                du = _du;
//                cerr << G << endl;
//                cerr << du << endl;
            }
        }
        // 更新dfn up
        {
            vector<int> _dfn(n + 1), _up(n + 1);
            int cnt = 0;
            function<void(int)> dfs = [&](int u) {
                _dfn[u] = ++cnt;
                for (int v: G[u]) {
                    dfs(v);
                }
                _up[u] = cnt;
            };

            // 从根
            for (int i = 1; i <= n; i++) {
                if (du[i] == 0) {
                    dfs(i);
                }
            }
            dfn = _dfn;
            up = _up;
        }

    }

    bool can_reach(int u, int v) {
        u = scc[u];
        v = scc[v];
        //dfs[u]  <=dfs[v] <= up[u]
        return dfn[u] <= dfn[v] && dfn[v] <= up[u];
    }

    void add_edge(int u, int v) {
        if (scc[u] != scc[v]) {
//            cerr << "addEdge " << u << " " << v << endl;
            G[scc[u]].push_back(scc[v]);
        }
    }


};


int decreace(char a, char b) {
    return (a - 48) * 50 + (b - 48);
}

class Query {
public:
    int from, to, time, idx;

    Query(int from, int to, int time, int idx) : from(from), to(to), time(time), idx(idx) {}

    bool operator<(const Query &q) const {
        return time < q.time;
    }

};

// 解密字符串
vector<int> decrypt(const string &s) {
    vector<int> res = {0};
    for (int i = 0; i < s.size(); i += 2) {
        res.push_back(decreace(s[i], s[i + 1]));
    }
    return res;
}


void solve() {
    int n, l, q;
    cin >> n >> l >> q;
    vector<string> s(l + 1);
    for (int i = 1; i <= l; i++) {
        cin >> s[i];
    }
    vector<Query> qs;
    for (int i = 0; i < q; i++) {
        string sa;
        cin >> sa;
        auto v = decrypt(sa);
        qs.emplace_back(v[1], v[2], v[3], i);
    }
    sort(qs.begin(), qs.end());
    int now = 0;
    vector<int> ans(q);
    Tarjan tarjan(n);
    auto modify = [&](int _i) {
        auto v = decrypt(s[_i]);
//        cerr << v << endl;
        vector<int> du(n + 1);
        for (int i = 1; i <= n; i++) {
            du[v[i]]++;
        }
        //找到入度为0的个数
        int cnt = 0;
        int cnt_id;
        for (int i = 1; i <= n; i++) {
            if (du[i] == 0) {
                cnt++;
                cnt_id = i;
            }
        }
        if (cnt == 0) {
            for (int i = 1; i <= n; i++) {
//                cerr << i << " " << v[i] << endl;
                tarjan.add_edge(i, v[i]);
            }
        } else if (cnt == 1) {
            int i = cnt_id;
            while (du[i] == 0) {
                i = v[i];
                du[i]--;
            }
//            cerr << i << " " << cnt_id << endl;
//            tarjan.add_edge(i, cnt_id);
            int j = v[i];
            while (v[j] != i) {
//                tarjan.add_edge(j, v[j]);
                j = v[j];
            }
            tarjan.add_edge(j, cnt_id);

            //对环进行处理
//            for (i = 1; i <= n; i++) {
//                if (du[i] == 1) {
//                    cerr << i << " " << v[i] << endl;
//                    tarjan.add_edge(i, v[i]);
//                }
//            }
        }
    };
    tarjan.init();
    for (auto &qq: qs) {
        while (now < qq.time) {
            now++;
            modify(now);
            tarjan.init();
        }
        ans[qq.idx] = tarjan.can_reach(qq.from, qq.to);
//        cerr << qq.idx << " " << qq.from << " " << qq.to << " " << qq.time << " " << ans[qq.idx] << endl;
    }
    for (int i = 0; i < q; i++) {
        cout << ans[i];
//        cout << (ans[i] ? "YES" : "NO") << endl;
    }
    cout << endl;

}

//1
//5 5 2
//0405020501
//0404050302
//0105050105
//0304010205
//0402030205
//040200
//010203
int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int t;
    cin >> t;
    while (t--) {
        solve();
    }
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 1ms
memory: 3580kb

input:

2
5 2 4
0305040201
0404040404
030300
020500
050102
020501
6 2 4
030603010601
010203060504
030202
060402
050602
060401

output:

1011
0100

result:

ok 2 lines

Test #2:

score: 0
Accepted
time: 1ms
memory: 3536kb

input:

1
3 3 6
020202
030301
030201
020102
030203
010201
010303
020303
010202

output:

010101

result:

ok single line: '010101'

Test #3:

score: 0
Accepted
time: 119ms
memory: 3760kb

input:

200
10 10 5000
01060:04020305080709
0103070:060204050908
09070503080401060:02
050308010204090:0607
03010502040607080:09
03080109020504060:07
06050:09040302080107
07080305010409060:02
030809010:0204060507
0:060908070201050304
060700
090:03
09080:
070405
010703
0:0100
080601
030600
070206
0:0:09
08040...

output:

011110001101101111111111111111111101111111110111011110110110111011010111111111111111111101111111111110111111110111111111111101111111111110111111111111111111110001100111111111111111111111111011101111111111111111111111111111111111111111011011110100111110111111110111111100111111101110111111111101111110...

result:

ok 200 lines

Test #4:

score: 0
Accepted
time: 120ms
memory: 23208kb

input:

1
2000 1 1000000
M=:]A@8UAY7W2JJ4KEHIA[HSCQ1ENSC`JXR;F3PJ:_@41P9Z=9HR8P<<:DUXRR9^WOQFL?NZP6S@=J0^WE32=6;\U0?88]Q_RNPUMT6YU<4<S]H?:7OCQYOT4YAV1^764ENWSDBED>M7A:BI>KSIR48JQ9B=N\5T3N4A2aF0@>3TI81<G7;YE>W`NMP<:IT4CI3D0=GZC3I\CLQJQBA9BDIS9SAM55KaVA<Z@D=>:Y?CQHUQ5U3a6UVI8OKX9_FAF^7=5M85;<0;8YPAM<7Z7PP7A=N...

output:

000101000101100010001000000010010110000001000001001100000000010000100001000000101100000000010000001000000001110000010110100000111100100000001000000000011001010001000001001000100000000100011001100110010000010000101100000011111000000010000101010010000000010101000001010111100000100000000000000101000100...

result:

ok single line: '000101000101100010001000000010...0101000101000000000010101001000'

Test #5:

score: 0
Accepted
time: 180ms
memory: 32516kb

input:

1
2000 2000 1000000
FVAaH7GRPO;_11Da5J18@3SMG==\G8E8S^6:M4L0JH>MN5IXT>2<7WJ3U8LVJS=;;3F13>0D0>VOIIU@EPHG6ABL6;K?T1PXDERLG07]5C9^GDKG<SBMIW;`4W8P3=469TIPKH0O34523_J5C2MJ17D25Z@=K8H@M>WK<CMK7EO]BPD7B6AW741J5YIHIa1:ERSG>L3N2^F3<4F`DLE@2AA5=8GZK6:192FB736[WMV7:^DA2C:<LK040VJBM3M]WXU50`407TR_?PLF@5VL7OSL...

output:

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111011111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

ok single line: '111111111111111111111111111111...1111111111111111111111111111111'

Test #6:

score: 0
Accepted
time: 224ms
memory: 31864kb

input:

1
2000 2000 1000000
0102030405060708090:0;0<0=0>0?0@0A0B0C0D0E0F0G0H0I0J0K0L0M0N0O0P0Q0R0S0T0U0V0W0X0Y0Z0[0\0]0^0_0`0a101112131415161718191:1;1<1=1>1?1@1A1B1C1D1E1F1G1H1I1J1K1L1M1N1O1P1Q1R1S1T1U1V1W1X1Y1Z1[1\1]1^1_1`1a202122232425262728292:2;2<2=2>2?2@2A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2S2T2U2V2W2X...

output:

000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000100000000000...

result:

ok single line: '000000000000000000000000000000...0000000000000000000000000000000'

Test #7:

score: 0
Accepted
time: 232ms
memory: 32600kb

input:

1
2000 2000 1000000
0102030405060708090:0;0<0=0>0?0@0A0B0C0D0E0F0G0H0I0J0K0L0M0N0O0P0Q0R0S0T0U0V0W0X0Y0Z0[0\0]0^0_0`0a101112131415161718191:1;1<1=1>1?1@1A1B1C1D1E1F1G1H1I1J1K1L1M1N1O1P1Q1R1S1T1U1V1W1X1Y1Z1[1\1]1^1_1`1a202122232425262728292:2;2<2=2>2?2@2A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2S2T2U2V2W2X...

output:

010001100010000000101000000110010001001010101100100100000001000000101010100010000001011111010000000001001000010101011111001010101010100100010001011011000010010100110110000100010110101110000011111101100110010100100101010000100100101110100000000101100010100111000011001110100010001010000101111001101000...

result:

ok single line: '010001100010000000101000000110...1010101000010010101000100000111'

Test #8:

score: 0
Accepted
time: 237ms
memory: 32208kb

input:

1
2000 2000 1000000
0102030405060708090:0;0<0=0>0?0@0A0B0C0D0E0F0G0H0I0J0K0L0M0N0O0P0Q0R0S0T0U0V0W0X0Y0Z0[0\0]0^0_0`0a101112131415161718191:1;1<1=1>1?1@1A1B1C1D1E1F1G1H1I1J1K1L1M1N1O1P1Q1R1S1T1U1V1W1X1Y1Z1[1\1]1^1_1`1a202122232425262728292:2;2<2=2>2?2@2A2B2C2D2E2F2G2H2I2J2K2L2M2N2O2P2Q2R2S2T2U2V2W2X...

output:

011010100000000000000000001000001100000110000000100001010000000000000010001000000100000000000000000000100000100000000001100000100011010000000000000000000000000010000001000000010001100010000100000001000000000010000000000000001000010100000000001000000000000000000000001100010000000000000101000000101010...

result:

ok single line: '011010100000000000000000001000...0000000000000100000010010000100'

Test #9:

score: 0
Accepted
time: 149ms
memory: 31872kb

input:

1
2000 2000 1000000
1REKN]@]>9D9177?6E8DU65LCS>X3Z4KJ47@?R43H8C2ADQ<T[GGCZI]CO4SCDNAVCE534S1;0LV<:F[R`A[=89FL^BYGU7F:NBDD2F3SYLQS[O407E\V>>;EOTL=W8VAYMRO[KHRZ7^F6?:<G4R9O3AVG1\1OER1MKNMG01R?=;SWMP28:X>2=GLC1LSU<VMKQ5?KQAS^4QDTC07TK=R01WL@6596@D5IKT?YG?HaQPP:<12ZUF?GARFKJXC`NFIaJ;SXC:80V1Q@Q;FJV]3XSJ...

output:

111101100101100100000000101000110011010001100000001001101000001000010101010010100111100010100110000001000000011101001010110000101000111000010011110100010101100101011111000010000001100001000011010001101000000010100011000110101001100010111010110011001101110010001110110101000000110111010100001000011001...

result:

ok single line: '111101100101100100000000101000...1100010101000011110011110111100'

Test #10:

score: 0
Accepted
time: 151ms
memory: 23464kb

input:

1
1 2000 1000000
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
01
0...

output:

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

ok single line: '111111111111111111111111111111...1111111111111111111111111111111'

Test #11:

score: 0
Accepted
time: 185ms
memory: 32408kb

input:

1
2000 2000 1000000
1ILZ2@SO4;BPWLFN@6HMAVQ]NNKR2NU30EP@3WF73^1BSKIP:VS7KQA>T\T63TAAK]8a4@7F0LD3V4LRN?M105L@>A<5D@S=MI9G9O<7<UQaF61VK;EQBEG`F8DOJ?L67;CL=@Q_IAPU2TP:43=O42I85UC\2L18KKP5MSFX73;\PFCQ:IB9?M<:FI?;N1I1>362O:;:1WQ6=Q7T=RW\WJMTQJ40U6JU>_@H:H6K0Y?[>H@K6@5AG]OEUEH>3G5C@OJ1E8O0CaO68??>A\C`:F8T...

output:

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

ok single line: '111111111111111111111111111111...1111111111111111111111111111111'

Test #12:

score: 0
Accepted
time: 178ms
memory: 31888kb

input:

1
2000 2000 1000000
=H=4F4S`A?@V<E8]HBU>190VP7EDDC6EH3P4CP6K2Z3OP@LI<7H`OM:F:=FOH9BW=<1ZGIK^7P0<9RK73Z1EFKO5QC5L25TCV`HT3D@RQ_2GE<SK;_D^0;>FSL5X9_Q0L\L7TW@_ULQE0Z;MG1O:3>F<MX=:V];@=1A@;^V^E\;F:[8S@SFY340R=@Wa8NSMS[UC5KV6JNV3EA<80_;a>`2:>A28OI=EL2?aTDL3WRNY4H8R2aIY14DAHJ>6UIEOS_?=AF6];\BK3]?<TYU5=`3^...

output:

111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111111...

result:

ok single line: '111111111111111111111111111111...1111111111111111111111111111111'

Test #13:

score: 0
Accepted
time: 126ms
memory: 3780kb

input:

200
10 10 5000
08060705040203010:09
0201090:080706050304
0201050903080:060407
0305010:020706090804
030901080:0706040205
0509070:010803060204
0:060709080203050401
0309010806050:040207
020106090703050:0408
0603020908010:050407
020700
080907
020305
070407
050509
080502
010100
020206
050809
0:0807
02040...

output:

011111111111111111101111111111111111111111111111101011111011111110111010111111111111110111111111111111111011101111111111111010110011011111111111111111011001110110101111110100111101111101101111011111111111111111111110011111110011111110111111101111111110111100111111111111111111111111111111111101011111...

result:

ok 200 lines

Test #14:

score: -100
Wrong Answer
time: 116ms
memory: 3768kb

input:

400
5 5 2500
0405020501
0404050302
0105050105
0304010205
0402030205
040200
010203
040203
030503
050201
010502
010505
030304
020504
050503
050105
030101
020403
030403
030200
010500
050500
030403
050101
040205
030501
010503
050400
030505
040303
050101
020101
050502
020104
050101
040503
010205
050404
0...

output:

000000010100000010010000100110000010010000100000100110010000100110101000010000010010010111000000011000001000000010000011010000000110000110010100101010010010110000011000000010011010110000100110111000000101001010010100010000111101011010111101001100000011100001000000000000111000000001100010001000010000...

result:

wrong answer 1st lines differ - expected: '000000010100000010010000100110...0010011000001101000010001111000', found: '000000010100000010010000100110...0010011000000001000010001110000'