oj.uz

Submission #568887

# Submission time Handle Problem Language Result Execution time Memory
568887 2022-05-26T10:04:33 Z tqbfjotld Reconstruction Project (JOI22_reconstruction) C++14
42 / 100
 5000 ms 468736 KB 
#include <bits/stdc++.h>
using namespace std;

set<pair<int,int> > mst[505];

int A[100005];
int B[100005];
int W[100005];

int find_min(int node, int dest, int pa){
    if (node==dest) return -1;
    for (auto x : mst[node]){
        if (x.first==pa) continue;
        int res = find_min(x.first,dest,node);
        if (res!=-2){
            if (res==-1) return x.second;
            if (W[res]<W[x.second]) return res;
            else return x.second;
        }
    }
    return -2;
}

int n;

vector<pair<int,int> > add,del;
const long long INF = 1000000010;
unordered_map<int,long long> fenw[2];

void upd(int pos, int val, int id){
    pos++;
    while (pos<INF){
        fenw[id][pos]+=val;
        pos+=(pos&-pos);
    }
}
long long qu(int pos, int id){
    long long ans = 0;
    pos++;
    while (pos>0){
        ans += fenw[id][pos];
        pos -= pos&-pos;
    }
    return ans;
}

long long ans[1000005];

int main(){
    scanf("%d",&n);
    int m;
    scanf("%d",&m);
    vector<pair<int,pair<int,int>>> edgel;
    for (int x = 0; x<m; x++){
        int a,b,c;
        scanf("%d%d%d",&a,&b,&c);
        edgel.push_back({c,{a,b}});
    }
    sort(edgel.begin(),edgel.end());
    for (int x = 0; x<m; x++){
        A[x] = edgel[x].second.first;
        B[x] = edgel[x].second.second;
        W[x] = edgel[x].first;
    }
    for (int x = 0; x<m; x++){
        int t = find_min(A[x],B[x],-1);
        if (t==-2){
            add.push_back({-1,x});
            mst[A[x]].insert({B[x],x});
            mst[B[x]].insert({A[x],x});
            continue;
        }
        //printf("swap %d to %d at q %d\n",t,x,(W[x]+W[t])/2);
        del.push_back({(W[x]+W[t])/2,t});
        mst[A[t]].erase(mst[A[t]].lower_bound({B[t],t}));
        mst[B[t]].erase(mst[B[t]].lower_bound({A[t],t}));
        add.push_back({(W[x]+W[t])/2,x});
        mst[A[x]].insert({B[x],x});
        mst[B[x]].insert({A[x],x});
    }
    sort(add.begin(),add.end());
    sort(del.begin(),del.end());

    int q;
    scanf("%d",&q);
    vector<pair<int,int> > queries;
    for (int x = 0; x<q; x++){
        int a;
        scanf("%d",&a);
        queries.push_back({a,x});
    }
    sort(queries.begin(),queries.end());
    int i1 = 0;
    int i2 = 0;
    for (auto x : queries){
        while (i1<add.size() && x.first>add[i1].first){
            auto t = add[i1];
            upd(W[t.second],W[t.second],0);
            upd(W[t.second],1,1);
            //printf("add %d\n",t.second);
            i1++;
        }
        while (i2<del.size() && x.first>del[i2].first){
            auto t = del[i2];
            upd(W[t.second],-W[t.second],0);
            upd(W[t.second],-1,1);
            //printf("del %d\n",t.second);
            i2++;
        }
        //printf("qu %d\n",x.first);
        long long sum1 = qu(x.first,0);
        long long sumtot = qu(INF-5,0);
        long long num1 = qu(x.first,1);
        long long numtot = n-1;
        ans[x.second] = num1*x.first-sum1 + (sumtot-sum1)-x.first*(numtot-num1);
    }
    for (int x = 0; x<q; x++){
        printf("%lld\n",ans[x]);
    }
}

Compilation message

reconstruction.cpp: In function 'int main()':
reconstruction.cpp:96:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |         while (i1<add.size() && x.first>add[i1].first){
      |                ~~^~~~~~~~~~~
reconstruction.cpp:103:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |         while (i2<del.size() && x.first>del[i2].first){
      |                ~~^~~~~~~~~~~
reconstruction.cpp:50:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   50 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
reconstruction.cpp:52:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   52 |     scanf("%d",&m);
      |     ~~~~~^~~~~~~~~
reconstruction.cpp:56:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |         scanf("%d%d%d",&a,&b,&c);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~
reconstruction.cpp:85:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   85 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
reconstruction.cpp:89:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   89 |         scanf("%d",&a);
      |         ~~~~~^~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct

Subtask #2
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1578 ms 77372 KB Output is correct
21 Correct 1301 ms 77464 KB Output is correct
22 Correct 1388 ms 77544 KB Output is correct
23 Correct 1524 ms 77460 KB Output is correct
24 Correct 1546 ms 77508 KB Output is correct
25 Correct 1590 ms 77496 KB Output is correct
26 Correct 1744 ms 77336 KB Output is correct
27 Correct 1548 ms 59312 KB Output is correct
28 Correct 729 ms 5596 KB Output is correct
29 Correct 447 ms 5216 KB Output is correct
30 Correct 1202 ms 51760 KB Output is correct
31 Correct 1386 ms 56768 KB Output is correct
32 Correct 1450 ms 59492 KB Output is correct
33 Correct 942 ms 30756 KB Output is correct
34 Correct 232 ms 5200 KB Output is correct
35 Correct 1057 ms 40424 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Execution timed out 5080 ms 410732 KB Time limit exceeded
5 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Execution timed out 5095 ms 468736 KB Time limit exceeded
21 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1578 ms 77372 KB Output is correct
21 Correct 1301 ms 77464 KB Output is correct
22 Correct 1388 ms 77544 KB Output is correct
23 Correct 1524 ms 77460 KB Output is correct
24 Correct 1546 ms 77508 KB Output is correct
25 Correct 1590 ms 77496 KB Output is correct
26 Correct 1744 ms 77336 KB Output is correct
27 Correct 1548 ms 59312 KB Output is correct
28 Correct 729 ms 5596 KB Output is correct
29 Correct 447 ms 5216 KB Output is correct
30 Correct 1202 ms 51760 KB Output is correct
31 Correct 1386 ms 56768 KB Output is correct
32 Correct 1450 ms 59492 KB Output is correct
33 Correct 942 ms 30756 KB Output is correct
34 Correct 232 ms 5200 KB Output is correct
35 Correct 1057 ms 40424 KB Output is correct
36 Correct 1678 ms 81092 KB Output is correct
37 Correct 1333 ms 81136 KB Output is correct
38 Correct 1547 ms 81168 KB Output is correct
39 Correct 1546 ms 81104 KB Output is correct
40 Correct 1708 ms 81040 KB Output is correct
41 Correct 1824 ms 81160 KB Output is correct
42 Correct 1820 ms 81008 KB Output is correct
43 Correct 1810 ms 79680 KB Output is correct
44 Correct 930 ms 17520 KB Output is correct
45 Correct 621 ms 18788 KB Output is correct
46 Correct 1841 ms 81384 KB Output is correct
47 Correct 1851 ms 81496 KB Output is correct
48 Correct 1904 ms 81468 KB Output is correct
49 Correct 1231 ms 47444 KB Output is correct
50 Correct 388 ms 18808 KB Output is correct
51 Correct 1192 ms 41220 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 0 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1578 ms 77372 KB Output is correct
21 Correct 1301 ms 77464 KB Output is correct
22 Correct 1388 ms 77544 KB Output is correct
23 Correct 1524 ms 77460 KB Output is correct
24 Correct 1546 ms 77508 KB Output is correct
25 Correct 1590 ms 77496 KB Output is correct
26 Correct 1744 ms 77336 KB Output is correct
27 Correct 1548 ms 59312 KB Output is correct
28 Correct 729 ms 5596 KB Output is correct
29 Correct 447 ms 5216 KB Output is correct
30 Correct 1202 ms 51760 KB Output is correct
31 Correct 1386 ms 56768 KB Output is correct
32 Correct 1450 ms 59492 KB Output is correct
33 Correct 942 ms 30756 KB Output is correct
34 Correct 232 ms 5200 KB Output is correct
35 Correct 1057 ms 40424 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Execution timed out 5080 ms 410732 KB Time limit exceeded
40 Halted 0 ms 0 KB -