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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#789489#114. Construction of Highway_8_8_#0 3ms9944kbC++203.1kb2024-11-27 20:32:282024-11-27 20:32:28

Judging History

你现在查看的是最新测评结果

  • [2024-11-27 20:32:28]
  • 评测
  • 测评结果:0
  • 用时:3ms
  • 内存:9944kb
  • [2024-11-27 20:32:28]
  • 提交

answer

#include <bits/stdc++.h> 

using namespace std;

typedef long long ll;
#pragma GCC optimize(Ofast)
#pragma GCC optimize(unroll-loops)
const int N = (int)1e5 + 12, MOD = (int)1e9 + 7;

int B = 19;
int n, c[N], sum = 0, up[N][19];
void make() {
    vector<int> cl;
    for(int i = 1; i <= n; i++) {
        cl.push_back(c[i]);
    }
    sort(cl.begin(), cl.end());
    cl.resize(unique(cl.begin(), cl.end()) - cl.begin());
    for(int i = 1; i <= n; i++) {
        c[i] = lower_bound(cl.begin(), cl.end(), c[i]) - cl.begin() + 1;
    }
}
int t[N], a[N], b[N], tin[N], tout[N];
vector<int> g[N];
pair<int, int> s[N * 8];

void upd(int pos, pair<int, int> val, int v = 1, int tl = 1, int tr = n + n) {
    if(tl == tr) {
        s[v] = val; 
    } else {
        int tm = (tl + tr) >> 1;
        if(pos <= tm) upd(pos, val, v + v, tl, tm);
        else upd(pos, val, v + v + 1, tm + 1, tr);
        s[v] = max(s[v + v], s[v + v + 1]);
    }
}
pair<int, int> get1(int l, int r, int v = 1, int tl = 1, int tr = n + n) {
    if(l > r || tl > r || l > tr) return {0, 0};
    if(tl >= l && tr <= r) return s[v];
    int tm = (tl + tr) >> 1;
    return max(get1(l, r, v + v, tl, tm), get1(l, r, v + v + 1, tm + 1, tr));
}
void add(int pos, int val) {
    while(pos <= n ) {
        t[pos] += val;
        pos += pos & -pos;
    }
}
int get(int i) {
    int ret = 0;
    while(i) {
        ret += t[i];
        i -= i & -i;
    }
    return ret;
}
int get(int l, int r) {
    return get(r) - get(l - 1);
}
void edge(int u, int v) {
    up[v][0] = u;
    g[u].push_back(v);
    for(int i = 1; i < B; i++) {
        up[v][i] = up[up[v][i - 1]][i - 1];
    }
}
int timer = 0;

void dfs(int v) {
    tin[v] = ++timer;
    for(int to : g[v]) {
        dfs(to);
    }
    tout[v] = ++timer;
}
void test() {
    cin >> n;
    for(int i = 1; i <= n; i++) {
        cin >> c[i];
    }
    make();

    for(int i = 1; i <= n - 1; i++) {
        cin >> a[i] >> b[i];
        edge(a[i], b[i]);
    }
    dfs(1);
    upd(tin[1],{0, c[1]});
    for(int i = 1; i <= n - 1; i++) {
        vector<pair<int, int>> x;
        int v = a[i];
        while(v) {
            int col = 1;
            auto r = get1(tin[v], tout[v]);
            for(int i = B - 1; i >= 0; i--) {
                int nv = up[v][i];
                if(nv && get1(tin[nv], tout[nv]).second == r.second) {
                    v = nv;
                    col += (1 << i);
                }
            }
            x.push_back({r.second, col});
            v = up[v][0];
        }
        reverse(x.begin(), x.end());
        ll res = 0;
        int m = (int)x.size();
        for(auto [j, k] : x) {
            res += get(j + 1, n) * 1ll * k;
            add(j, k);
        }
        for(auto [j, k] : x) {
            add(j, -k);
        }
        upd(tin[b[i]], {i, c[b[i]]});
        cout << res << '\n';
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);

    int t = 1;
    // cin >> t;

    while(t--) 
        test();

    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 7
Accepted
time: 1ms
memory: 7924kb

input:

2
804289384 846930887
1 2

output:

0

result:

ok single line: '0'

Test #2:

score: 7
Accepted
time: 1ms
memory: 7708kb

input:

10
505335291 738766720 190686789 260874576 747983062 906156499 502820865 142559278 261608746 380759628
1 3
1 5
5 7
3 8
1 4
3 10
7 6
5 9
5 2

output:

0
0
0
1
0
1
0
0
0

result:

ok 9 lines

Test #3:

score: 7
Accepted
time: 1ms
memory: 7708kb

input:

100
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output:

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result:

ok 99 lines

Test #4:

score: 7
Accepted
time: 1ms
memory: 7756kb

input:

300
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output:

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0...

result:

ok 299 lines

Test #5:

score: 7
Accepted
time: 2ms
memory: 7748kb

input:

500
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output:

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2...

result:

ok 499 lines

Test #6:

score: 7
Accepted
time: 2ms
memory: 9788kb

input:

500
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output:

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1...

result:

ok 499 lines

Test #7:

score: 7
Accepted
time: 2ms
memory: 7676kb

input:

500
45618678 863967300 272579900 461085872 21961326 105564444 138782587 68574098 291851601 118852154 131251316 191929322 641615332 751255527 909053866 351969721 462792179 691535747 693715571 143120737 928880505 114632964 732145789 94870505 34412750 561287885 781032962 630849393 77144258 155493231 38...

output:

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11...

result:

ok 499 lines

Test #8:

score: 7
Accepted
time: 0ms
memory: 7716kb

input:

500
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output:

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result:

ok 499 lines

Test #9:

score: 7
Accepted
time: 0ms
memory: 7784kb

input:

500
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output:

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result:

ok 499 lines

Test #10:

score: 7
Accepted
time: 2ms
memory: 9736kb

input:

500
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output:

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result:

ok 499 lines

Test #11:

score: 7
Accepted
time: 2ms
memory: 7688kb

input:

500
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output:

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result:

ok 499 lines

Test #12:

score: 7
Accepted
time: 2ms
memory: 7684kb

input:

500
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output:

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result:

ok 499 lines

Test #13:

score: 7
Accepted
time: 2ms
memory: 7904kb

input:

500
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output:

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result:

ok 499 lines

Test #14:

score: 7
Accepted
time: 2ms
memory: 7684kb

input:

500
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output:

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result:

ok 499 lines

Test #15:

score: 7
Accepted
time: 0ms
memory: 7664kb

input:

500
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output:

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...

result:

ok 499 lines

Test #16:

score: 7
Accepted
time: 2ms
memory: 7680kb

input:

500
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output:

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...

result:

ok 499 lines

Test #17:

score: 7
Accepted
time: 0ms
memory: 9944kb

input:

500
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output:

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result:

ok 499 lines

Test #18:

score: 7
Accepted
time: 3ms
memory: 9780kb

input:

500
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output:

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result:

ok 499 lines

Test #19:

score: 7
Accepted
time: 2ms
memory: 7684kb

input:

500
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output:

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result:

ok 499 lines

Test #20:

score: 7
Accepted
time: 0ms
memory: 7632kb

input:

500
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output:

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result:

ok 499 lines

Test #21:

score: 7
Accepted
time: 2ms
memory: 7780kb

input:

500
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output:

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result:

ok 499 lines

Test #22:

score: 0
Wrong Answer
time: 2ms
memory: 7744kb

input:

500
1 1 1 2 1 2 2 1 2 2 2 2 1 2 2 2 1 2 2 1 2 2 1 1 2 2 2 2 2 2 2 2 2 2 1 2 1 2 2 1 2 2 2 2 1 1 2 1 2 1 1 2 2 2 2 1 1 1 1 2 2 2 1 1 2 1 1 2 2 2 2 1 1 1 1 1 2 2 2 1 2 2 2 1 1 1 2 1 1 2 2 2 1 2 1 2 2 1 2 2 2 1 2 1 2 2 1 1 1 2 1 2 2 1 1 2 1 2 1 2 1 2 1 1 2 1 1 1 1 2 2 1 2 2 1 1 1 1 1 2 1 2 1 2 2 1 1 2 ...

output:

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result:

wrong answer 25th lines differ - expected: '2', found: '0'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Skipped

Dependency #1:

0%