oj.uz

Submission #568893

# Submission time Handle Problem Language Result Execution time Memory
568893 2022-05-26T10:11:57 Z tqbfjotld Reconstruction Project (JOI22_reconstruction) C++14
42 / 100
 1137 ms 42868 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;
long long fenw[2][1300005];

void upd(int pos, int val, int id){
    pos++;
    while (pos<300005){
        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];
vector<int> discr;

void upd2(int pos, int val, int id){
    int t = lower_bound(discr.begin(),discr.end(),pos)-discr.begin();
    upd(t,val,id);
}
long long qu2(int pos, int id){
    int t = lower_bound(discr.begin(),discr.end(),pos)-discr.begin();
    return qu(t,id);
}

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;
        discr.push_back(W[x]);
    }
    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});
        discr.push_back(a);
    }
    sort(discr.begin(),discr.end());
    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];
            upd2(W[t.second],W[t.second],0);
            upd2(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];
            upd2(W[t.second],-W[t.second],0);
            upd2(W[t.second],-1,1);
            //printf("del %d\n",t.second);
            i2++;
        }
        //printf("qu %d\n",x.first);
        long long sum1 = qu2(x.first,0);
        long long sumtot = qu2(INF-5,0);
        long long num1 = qu2(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:109:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  109 |         while (i1<add.size() && x.first>add[i1].first){
      |                ~~^~~~~~~~~~~
reconstruction.cpp:116:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  116 |         while (i2<del.size() && x.first>del[i2].first){
      |                ~~^~~~~~~~~~~
reconstruction.cpp:60:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
reconstruction.cpp:62:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |     scanf("%d",&m);
      |     ~~~~~^~~~~~~~~
reconstruction.cpp:66:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |         scanf("%d%d%d",&a,&b,&c);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~
reconstruction.cpp:96:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
reconstruction.cpp:100:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
  100 |         scanf("%d",&a);
      |         ~~~~~^~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 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 1 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 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 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 624 ms 7968 KB Output is correct
21 Correct 326 ms 8048 KB Output is correct
22 Correct 422 ms 7976 KB Output is correct
23 Correct 483 ms 7964 KB Output is correct
24 Correct 535 ms 8032 KB Output is correct
25 Correct 612 ms 8228 KB Output is correct
26 Correct 633 ms 7984 KB Output is correct
27 Correct 633 ms 8000 KB Output is correct
28 Correct 621 ms 8056 KB Output is correct
29 Correct 382 ms 6716 KB Output is correct
30 Correct 605 ms 7780 KB Output is correct
31 Correct 659 ms 7868 KB Output is correct
32 Correct 645 ms 7976 KB Output is correct
33 Correct 650 ms 7192 KB Output is correct
34 Correct 271 ms 6524 KB Output is correct
35 Correct 626 ms 7284 KB Output is correct

Subtask #3
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Incorrect 1137 ms 42868 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 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 Incorrect 550 ms 37148 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 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 624 ms 7968 KB Output is correct
21 Correct 326 ms 8048 KB Output is correct
22 Correct 422 ms 7976 KB Output is correct
23 Correct 483 ms 7964 KB Output is correct
24 Correct 535 ms 8032 KB Output is correct
25 Correct 612 ms 8228 KB Output is correct
26 Correct 633 ms 7984 KB Output is correct
27 Correct 633 ms 8000 KB Output is correct
28 Correct 621 ms 8056 KB Output is correct
29 Correct 382 ms 6716 KB Output is correct
30 Correct 605 ms 7780 KB Output is correct
31 Correct 659 ms 7868 KB Output is correct
32 Correct 645 ms 7976 KB Output is correct
33 Correct 650 ms 7192 KB Output is correct
34 Correct 271 ms 6524 KB Output is correct
35 Correct 626 ms 7284 KB Output is correct
36 Correct 671 ms 8860 KB Output is correct
37 Correct 310 ms 8756 KB Output is correct
38 Correct 476 ms 8792 KB Output is correct
39 Correct 529 ms 8924 KB Output is correct
40 Correct 574 ms 8684 KB Output is correct
41 Correct 674 ms 8856 KB Output is correct
42 Correct 659 ms 8828 KB Output is correct
43 Correct 683 ms 8824 KB Output is correct
44 Correct 662 ms 8812 KB Output is correct
45 Correct 425 ms 7164 KB Output is correct
46 Correct 672 ms 8688 KB Output is correct
47 Correct 657 ms 8780 KB Output is correct
48 Correct 679 ms 8980 KB Output is correct
49 Correct 693 ms 7968 KB Output is correct
50 Correct 275 ms 6968 KB Output is correct
51 Correct 647 ms 7836 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 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 Correct 0 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 0 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 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 624 ms 7968 KB Output is correct
21 Correct 326 ms 8048 KB Output is correct
22 Correct 422 ms 7976 KB Output is correct
23 Correct 483 ms 7964 KB Output is correct
24 Correct 535 ms 8032 KB Output is correct
25 Correct 612 ms 8228 KB Output is correct
26 Correct 633 ms 7984 KB Output is correct
27 Correct 633 ms 8000 KB Output is correct
28 Correct 621 ms 8056 KB Output is correct
29 Correct 382 ms 6716 KB Output is correct
30 Correct 605 ms 7780 KB Output is correct
31 Correct 659 ms 7868 KB Output is correct
32 Correct 645 ms 7976 KB Output is correct
33 Correct 650 ms 7192 KB Output is correct
34 Correct 271 ms 6524 KB Output is correct
35 Correct 626 ms 7284 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 0 ms 340 KB Output is correct
39 Incorrect 1137 ms 42868 KB Output isn't correct
40 Halted 0 ms 0 KB -