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Submission #1044828

# Submission time Handle Problem Language Result Execution time Memory
1044828 2024-08-05T14:01:35 Z vjudge1 Strange Device (APIO19_strange_device) C++17
5 / 100
 2197 ms 524288 KB 
#include<bits/stdc++.h>
#define int long long
#define MOD 1000000007
#define all(x) x.begin(),x.end()
#define ff fir -st
#define ss second
#define pb push_back
#define fast ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);

using namespace std;

int32_t main(){
	int n,a,b;
	cin>>n>>a>>b;
	set<pair<int,int>>st;
	map<pair<int,int>,int>mp;
	for(int i=0;!st.count(make_pair((i+i/b)%a,i%b));i++){
		st.insert(make_pair((i+i/b)%a,i%b));
		mp[make_pair((i+i/b)%a,i%b)]=i;
	}
	vector<int>pre(st.size()+5);
	for(int i=0;i<n;i++){
		int l,r;
		cin>>l>>r;
		if(r-l+1>=st.size()){
			cout<<st.size()<<endl;
			return 0;
		}
		int x=mp[make_pair((l+l/b)%a,l%b)],y=mp[make_pair((r+r/b)%a,r%b)];
		if(x>y){
			pre[0]++;
			pre[y+1]--;
			pre[x]++;
			pre[st.size()]--;
		}
		else{
			pre[x]++;
			pre[y+1]--;
		}
	}
	int ans=0;
	for(int i=0;i<st.size();i++){
		pre[i]+=(i==0?0:pre[i-1]);
		ans+=(pre[i]!=0);
	}
	cout<<ans<<endl;
}

Compilation message

strange_device.cpp: In function 'int32_t main()':
strange_device.cpp:25:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::set<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   if(r-l+1>=st.size()){
      |      ~~~~~^~~~~~~~~~~
strange_device.cpp:42:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::set<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |  for(int i=0;i<st.size();i++){
      |              ~^~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Runtime error 1057 ms 524288 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #2
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Runtime error 2197 ms 524288 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 535 ms 128400 KB Output is correct
3 Correct 456 ms 130080 KB Output is correct
4 Correct 448 ms 108136 KB Output is correct
5 Correct 1012 ms 142972 KB Output is correct

Subtask #4
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1507 ms 179496 KB Output is correct
3 Runtime error 1767 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #5
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1507 ms 179496 KB Output is correct
3 Runtime error 1767 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1507 ms 179496 KB Output is correct
3 Runtime error 1767 ms 524288 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Runtime error 1252 ms 524288 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #8
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Runtime error 1057 ms 524288 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -