Submission #616208

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Source Code Expand

#include <iostream>
#include <cstdio>
#include <string>
#include <vector>
#include <algorithm>
#include <stack>
#include <queue>
#include <deque>
#include <map>
#include <set>
#include <cmath>
#include <cstring>
#include <cstdlib>

using namespace std;

#define pb push_back
#define mp make_pair
#define rep(i,n) for(int i=0;i<(int)(n);++i)
#define REP(i,j,k) for(int i=j;i<(int)(k);++i)
#define foreach(i,c) for(__typeof((c).begin()) i=(c).begin();i!=(c).end();++i)
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int,int> pii;
typedef long long ll;
// const int INF = 1 << 29;
// const double EPS = 1e-9;

ll nico = 25;
ll n;

int main(){
    cin >> n;
    int ans = 0;
    REP(j, 1, 40000002){
        if(nico * (ll)j > n) break;
        ans++;
    }

    cout << ans << endl;
    return 0;
}

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