Submission #1083437

#	Time	Username	Problem	Language	Result	Execution time	Memory
1083437		hqminhuwu	Potatoes and fertilizers (LMIO19_bulves)	C++14	100 / 100	143 ms	19396 KiB

bulves

#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair <ll,ll> pll;
typedef pair <int,int> pii;
typedef pair <int,pii> piii;

#define forr(_a,_b,_c) for(int _a = (_b); _a <= int (_c); ++_a)
#define ford(_a,_b,_c) for(int _a = (_b) + 1; _a --> int (_c);)
#define forf(_a,_b,_c) for(int _a = (_b); _a < int (_c); ++_a)
#define st first
#define nd second
#define pb push_back
#define mp make_pair
#define all(x) begin(x),end(x)
#define mask(i) (1LL << (i))
#define bit(x, i) (((x) >> (i)) & 1)
#define bp __builtin_popcountll
#define file "test"

template<class X, class Y>
    bool minz(X &x, const Y &y) {
        if (x > y) {
            x = y;
            return true;
        } return false;
    }
template<class X, class Y>
    bool maxz(X &x, const Y &y) {
        if (x < y) {
            x = y;
            return true;
        } return false;
    }

const int N = 5e5 + 5;
const ll oo = (ll) 1e16;
const ll mod = 1e9 + 7; // 998244353;

ll n, x, ans, y;
ll d[N];
priority_queue <ll> q;

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0);
    #ifdef hqm
        freopen(file".inp", "r", stdin); freopen(file".out", "w", stdout);
    #endif

    cin >> n;

    forr (i, 1, n)
        q.push(0);

    forr (i, 1, n){
        cin >> x >> y;
        d[i] = d[i - 1] + x - y;
    }

    forr (i, 1, n){
        q.push(d[i]);
        q.push(d[i]);
        ans += abs(q.top() - d[i]);
        q.pop();
    }

    while (!q.empty()){
        if (q.top() <= d[n]) break;
        ans += q.top() - d[n];
        q.pop();
    }

    cout << ans  << endl;

    return 0;
}
/*



*/

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