QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#565993#9319. Bull Farmucup-team1001TL 249ms32656kbC++236.4kb2024-09-15 22:50:422024-09-15 22:50:43

Judging History

你现在查看的是最新测评结果

  • [2024-09-15 22:50:43]
  • 评测
  • 测评结果:TL
  • 用时:249ms
  • 内存:32656kb
  • [2024-09-15 22:50:42]
  • 提交

answer

#include <bits/stdc++.h>

using namespace std;


const int mod = 998244353;
bitset<2005> dp[2005];


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<vector<int>> rG;
    vector<vector<int>> go;
    vector<int> scc;
    vector<int> dfn, up, du;
public:

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

    void init() {
        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);
                }
            }
            int nn = scc.size() - 1;
            for (int i = 1; i <= nn; i++) {
                scc[i] = _scc[scc[i]];
            }
            n = _scc_cnt - 1;
            // 更新图
            {
                vector<vector<int>> _G(n + 1);
                vector<vector<int>> _rG(n + 1);
                vector<int> _du(n + 1);
                for (int i = 1; i <= _n; i++) {
                    for (int j: G[i]) {
                        if (_scc[i] != _scc[j]) {
                            _G[_scc[i]].push_back(_scc[j]);
                            _rG[_scc[j]].push_back(_scc[i]);
                            _du[_scc[i]]++;
                        }
                    }
                }
                G = _G;
                rG = _rG;
                du = _du;
            }
        }
        {

            for (int i = 1; i <= n; i++) {
                dp[i].reset();
            }
            stack<int> stk;
            for (int i = 1; i <= n; i++) {
                dp[i][i] = true;
                if (du[i] == 0) {
                    stk.push(i);
                }
            }
            while (!stk.empty()) {
                int u = stk.top();
                stk.pop();
                for (int v: rG[u]) {
                    dp[v] |= dp[u];
                    du[v]--;
                    if (du[v] == 0) {
                        stk.push(v);
                    }
                }
            }

        }

    }

    bool can_reach(int u, int v) {
        u = scc[u];
        v = scc[v];
        return dp[u][v];
   
    }
//    }

    bool add_edge(int u, int v) {
        if (scc[u] != scc[v]) {
//            cerr << "add edge " << u << " " << v << endl;
            G[scc[u]].push_back(scc[v]);
            rG[scc[v]].push_back(scc[u]);
            return true;
        }
        return false;
    }
};

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) -> bool {
        bool f = false;
        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;
                f |= tarjan.add_edge(i, v[i]);
            }
//            return true;
        } else if (cnt == 1) {
            int i = cnt_id;
            while (du[i] == 0) {
                if (du[v[i]] == 2) {
                    f |= tarjan.add_edge(i, cnt_id);
                }
                i = v[i];
                du[i]--;

            }
            int j = v[i];
            while (v[j] != i) {
                f |= tarjan.add_edge(j, v[j]);
            }
            f |= tarjan.add_edge(j, cnt_id);
        }
        return f;
    };
    tarjan.init();
    for (auto &qq: qs) {
        bool f = false;
        while (now < qq.time) {
            now++;
            f |= modify(now);
        }
        if (f) {
            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 << endl;

}

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: 0ms
memory: 3788kb

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: 0ms
memory: 3520kb

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: 123ms
memory: 3784kb

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: 114ms
memory: 23756kb

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: 174ms
memory: 32388kb

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: 238ms
memory: 32340kb

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: 249ms
memory: 32480kb

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: 142ms
memory: 32612kb

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: 131ms
memory: 32492kb

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: 155ms
memory: 23172kb

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: 166ms
memory: 32600kb

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: 177ms
memory: 32656kb

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: 119ms
memory: 3720kb

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
Time Limit Exceeded

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:


result: