Submission #753114

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
753114	2023-06-04 16:10:35	minhnhatnoe	Pilot (NOI19_pilot)	C++14	100 / 100	539 ms	48344 KiB

pilot

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#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll cpair(ll s){
    return s * (s+1) / 2;
}
struct dsu{
    ll c = 0;
    vector<int> p;
    vector<bool> s;
    dsu(int n): p(n, -1), s(n) {}
    int find(int v){
        if (p[v] < 0) return v;
        return p[v] = find(p[v]);
    }
    void merge(int a, int b){
        a = find(a), b = find(b);
        if (a == b) return;
        if (-p[a] < -p[b]) swap(a, b);
        c -= cpair(-p[a]) + cpair(-p[b]);
        p[a] += p[b];
        c += cpair(-p[a]);
        p[b] = a;
    }
    void activate(int pos){
        c += 1;
        s[pos] = true;
        if (pos && s[pos-1]){
            merge(pos, pos-1);
 
 
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Compilation message (stderr)

pilot.cpp: In member function 'void dsu::activate(int)':
pilot.cpp:32:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<bool>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |         if (pos != s.size()-1 && s[pos+1]){
      |             ~~~~^~~~~~~~~~~~~
pilot.cpp: In function 'int main()':
pilot.cpp:54:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int i=0; i<b.size(); i++){
      |                   ~^~~~~~~~~
pilot.cpp:55:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         while (aptr < a.size() && a[aptr].first <= b[i].first){
      |                ~~~~~^~~~~~~~~~
pilot.cpp:61:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |     for (int i=0; i<result.size(); i++){
      |                   ~^~~~~~~~~~~~~~

• Subtask 1: 3 / 3
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 5 / 5
• Subtask 6: 9 / 9
• Subtask 7: 14 / 14
• Subtask 8: 10 / 10
• Subtask 9: 11 / 11
• Subtask 10: 11 / 11