Submission #931741

#	Time	Username	Problem	Language	Result	Execution time	Memory
931741		pcc	A Huge Tower (CEOI10_tower)	C++14	100 / 100	118 ms	8740 KiB

tower

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>


const ll mod = 1e9+9;
vector<int> v;
ll N,D;

int main(){
	ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>N>>D;
	v.resize(N);
	for(auto &i:v)cin>>i;
	sort(v.rbegin(),v.rend());
	int pt = 0;
	ll ans = 1;
	for(int i = 0;i<v.size();i++){
		while(pt<i&&v[pt]-v[i]>D)pt++;
		ll len = i-pt+1;
		ans = ans*len%mod;
	}
	cout<<ans;
}

Compilation message (stderr)

tower.cpp: In function 'int main()':
tower.cpp:24:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |  for(int i = 0;i<v.size();i++){
      |                ~^~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
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• Subtask 15: 5 / 5
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• Subtask 19: 5 / 5
• Subtask 20: 5 / 5