oj.uz

Submission #1097124

# Submission time Handle Problem Language Result Execution time Memory
1097124 2024-10-06T07:27:15 Z coolsentenceidontremember Sirni (COCI17_sirni) C++17
140 / 140
 1223 ms 746992 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];
   vector<vector<pii>> edge(lim+1);
   for (int i = 0; i < v.size()-1; i++){
   	 edge[v[i+1]%v[i]].push_back({i, i+1});
   	 for (int j = v[i]*2; j <= lim; j+=v[i]) edge[v[nearest[j]]%v[i]].push_back(mp(i, nearest[j]));
   }
   ll ans = 0;
   memset(p, -1, sizeof p);
   for (int i = 0; i <= lim; i++) for (const pii &p : edge[i]) if (unite(p.ff, p.ss)) ans += i;
   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 135 ms 274512 KB Output is correct
2 Correct 188 ms 303188 KB Output is correct
3 Correct 132 ms 274004 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 877 ms 668912 KB Output is correct
3 Correct 145 ms 275384 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 128 ms 274844 KB Output is correct
2 Correct 139 ms 274260 KB Output is correct
3 Correct 131 ms 274776 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 50 ms 38836 KB Output is correct
2 Correct 99 ms 66956 KB Output is correct
3 Correct 61 ms 49704 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 30296 KB Output is correct
2 Correct 65 ms 51792 KB Output is correct
3 Correct 38 ms 25188 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 50392 KB Output is correct
2 Correct 125 ms 84440 KB Output is correct
3 Correct 59 ms 47792 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 10068 KB Output is correct
2 Correct 132 ms 85260 KB Output is correct
3 Correct 62 ms 49644 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 184 ms 288848 KB Output is correct
2 Correct 913 ms 633736 KB Output is correct
3 Correct 191 ms 291424 KB Output is correct

Subtask #9
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 199 ms 292852 KB Output is correct
2 Correct 1223 ms 746992 KB Output is correct
3 Correct 283 ms 348600 KB Output is correct

Subtask #10
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 277292 KB Output is correct
2 Correct 986 ms 634472 KB Output is correct
3 Correct 61 ms 51520 KB Output is correct