oj.uz

Submission #1097122

# Submission time Handle Problem Language Result Execution time Memory
1097122 2024-10-06T07:19:58 Z coolsentenceidontremember Sirni (COCI17_sirni) C++17
98 / 140
 5000 ms 548064 KB 
/*


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*/



#include"bits/stdc++.h"
#pragma GCC optimize("O3", "unroll-loops")
#define ll long long
#define ld long double
#define ff first
#define ss second
#define pii pair<int, int>
#define mp make_pair
#define make_rng mt19937 rng(chrono::steady_clock::now().time_since_epoch().count())
#define make_rng64 mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count())
using namespace std;

void setIO(string s = ""){
 ios_base::sync_with_stdio(false);
 cin.tie(nullptr);
 cout.tie(nullptr);
 if (!s.empty()){
	freopen((s+".in").c_str(), "r", stdin);
	freopen((s+".out").c_str(), "w", stdout);
	}
}

int p[100000];

int find(int x){
	return (p[x] < 0 ? x : p[x] = find(p[x]));
}

bool unite(int x, int y){
	x = find(x), y = find(y);
	if (x == y) return 0;
	if (p[x] > p[y]) swap(x, y);
	p[x] += p[y];
	p[y] = x;
	return 1;
}


int main(){
   setIO();
   int n;
   cin >> n;
   vector<int> v(n);
   for (int &i : v) cin >> i;
   sort(v.begin(), v.end());
   v.erase(unique(v.begin(), v.end()), v.end());
   int lim = v.back();
   vector<int> nearest(lim+1, -1);
   for (int i = 0; i < v.size();i++) nearest[v[i]] = i;
   for (int i = lim - 1; i >= 0; i--) if (nearest[i] == -1) nearest[i] = nearest[i+1];
   set<pair<int, pii>> s;
   for (int i = 0; i < v.size()-1; i++){
   	 s.insert(mp(v[i+1]%v[i], mp(i, i+1)));
   	 for (int j = v[i]*2; j <= lim; j+=v[i]) s.insert(mp(v[nearest[j]]%v[i], mp(i, nearest[j])));
   }
   ll ans = 0;
   memset(p, -1, sizeof p);
   for (const auto &e : s){
   	 if (unite(e.ss.ff, e.ss.ss)) ans += e.ff;
   }
   cout << ans;
   //for (int i = 0; i <= lim; i++) cout << nearest[i] << ' ';
}

Compilation message

sirni.cpp: In function 'int main()':
sirni.cpp:171:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  171 |    for (int i = 0; i < v.size();i++) nearest[v[i]] = i;
      |                    ~~^~~~~~~~~~
sirni.cpp:174:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  174 |    for (int i = 0; i < v.size()-1; i++){
      |                    ~~^~~~~~~~~~~~
sirni.cpp: In function 'void setIO(std::string)':
sirni.cpp:140:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |  freopen((s+".in").c_str(), "r", stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sirni.cpp:141:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  141 |  freopen((s+".out").c_str(), "w", stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 40276 KB Output is correct
2 Correct 231 ms 51536 KB Output is correct
3 Correct 29 ms 40456 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1116 KB Output is correct
2 Correct 1574 ms 43908 KB Output is correct
3 Correct 28 ms 40540 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 40276 KB Output is correct
2 Correct 25 ms 39760 KB Output is correct
3 Correct 27 ms 40284 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 454 ms 69200 KB Output is correct
2 Correct 1918 ms 247496 KB Output is correct
3 Correct 659 ms 97616 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 13652 KB Output is correct
2 Correct 2000 ms 138040 KB Output is correct
3 Correct 467 ms 68928 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1214 ms 149840 KB Output is correct
2 Correct 2580 ms 315740 KB Output is correct
3 Correct 589 ms 90448 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 104 ms 24048 KB Output is correct
2 Correct 3357 ms 300920 KB Output is correct
3 Correct 640 ms 86352 KB Output is correct

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 904 ms 116680 KB Output is correct
2 Execution timed out 5087 ms 548064 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 909 ms 115936 KB Output is correct
2 Execution timed out 5039 ms 445972 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 114 ms 51540 KB Output is correct
2 Execution timed out 5086 ms 412784 KB Time limit exceeded
3 Halted 0 ms 0 KB -