Submission #1110286

#	Time	Username	Problem	Language	Result	Execution time	Memory
1110286		vjudge1	Ski 2 (JOI24_ski2)	C++17	5 / 100	1 ms	504 KiB

Main

#include <bits/stdc++.h>
#define fi(i, a, b) for( int i = a; i <= b; i++ )
#define fid(i, a, b) for( int i = a; i >= b; i-- )
#define getbit(x, i) ((x>>i)&1)
#define ll long long
#define pb push_back
#define pii pair<int,int>
#define pli pair<ll,int>
#define pll pair<ll,ll>
#define st first
#define nd second
#define mp make_pair
#define HTManh ""
#define maxn 100009
#define endl '\n'
using namespace std;

int n;
ll k;
pll a[309];

ll dp[309];

int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(NULL); cout.tie(NULL);
	if (fopen(HTManh".inp", "r"))
    {
        freopen(HTManh".inp", "r", stdin);
        freopen(HTManh".out", "w", stdout);
    }

    cin >> n >> k;
    fi(i,1,n) cin >> a[i].st >> a[i].nd;
    sort(a+1,a+n+1);

    int vt = 0;
    fi(i,1,n+1) if (a[i].st != a[1].st || i == n+1)
    {
        vt = i-1;
        break;
    }

    ll res = 0;
    fi(i,2,vt)
    {
        a[i].st++;
        res += k;
    }

    ll mn, dem;
    mn = a[1].nd, dem = 1;

    int dau = 2, cuoi = 2;
    while(dau <= n)
    {
        while(a[dau].st == a[cuoi].st && cuoi <= n) cuoi++;
        cuoi--;

        fi(i,dau,cuoi)
        {
            if (dem > 0) dem--;
            else res += mn;
        }
        fi(i,dau,cuoi) mn = min(mn, a[i].nd);
        dem += cuoi-dau+1;

        dau = cuoi + 1;
        cuoi = dau;
    }
    cout << res << endl;

}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:30:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         freopen(HTManh".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:31:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   31 |         freopen(HTManh".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 0 / 12
• Subtask 3: 0 / 9
• Subtask 4: 0 / 33
• Subtask 5: 0 / 27
• Subtask 6: 0 / 14