Submission #415957

#	Time	Username	Problem	Language	Result	Execution time	Memory
415957		2548631	Potatoes and fertilizers (LMIO19_bulves)	C++17	30 / 100	3 ms	460 KiB

bulves

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

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll,ll> ii;
typedef complex<ld> cp;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;
typedef vector<cp> vcp;
typedef vector<ld> vld;
typedef vector<vi> vvi;
typedef vector<vll> vvll;
typedef vector<vii> vvii;

#define fastIO ios::sync_with_stdio(false), cin.tie(NULL), cout.tie(NULL)
#define forw(i,l,r) for( int i = (l) ; i < (r) ; i++ )
#define forb(i,r,l) for( int i = (r) ; i >= (l) ; i-- )
#define log2i(x) (32 - __builtin_clz((x)) - 1)
#define log2ll(x) (64 - __builtin_clzll((x)) - 1)
#define Pi 3.141592653589793
#define sz(x) (int)x.size()
#define mt make_tuple
#define mp make_pair
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define pob pop_back
#define pof pop_front
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()

const int N = 5e3+7;
int n;
ll ans=0;
int a[N],b[N],diff[N],d[N],dp[N][N];
priority_queue<ll> q;

int main() {
    fastIO;
    //freopen("test.inp","r",stdin);
    //freopen("test.out","w",stdout);

    cin >> n;
    forw(i,1,n+1) {
        cin >> a[i] >> b[i];
        diff[i]=a[i]-b[i];
        d[i]=d[i-1]+diff[i];
    }
    forw(i,1,n+1) {
        q.push(min(max(d[i],0),d[n]));
        q.push(min(max(d[i],0),d[n]));
        if(q.top()>d[i]) ans+=q.top()-d[i];
        if(d[n]<d[i]) ans+=d[i]-d[n];
        q.pop();
    }
    cout << ans;
    return 0;
}

• Subtask 1: 0 / 24
• Subtask 2: 0 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 0 / 36