Submission #336824

#	Time	Username	Problem	Language	Result	Execution time	Memory
336824		thecodingwizard	Potatoes and fertilizers (LMIO19_bulves)	C++11	20 / 100	355 ms	748 KiB

bulves

#include <bits/stdc++.h>

using namespace std;

using ll = long long;
#define ii pair<int, int>
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define all(x) x.begin(), x.end()
#define sz(x) (int)x.size()
#define F0R(i, n) for (int i = 0; i < n; i++)
#define FOR(i, a, b) for (int i = a; i < b; i++)
#define inf 1000000010

int dp[2][30001];
int diff[3000];

int main() {
    cin.tie(0)->sync_with_stdio(0);

    int n; cin >> n; assert(n <= 3000);

    ll totA = 0, totB = 0;
    F0R(i, n) {
        int a, b; cin >> a >> b;
        totA += a; totB += b;
        diff[i] = totA - totB;
    }
    assert(totA <= 30000 && totB <= 30000);

    F0R(i, n) {
        F0R(j, 30001) {
            dp[i%2][j] = min((i>0 ? dp[(i-1)%2][j] : 0) + abs(diff[i]-j), (j>0 ? dp[i%2][j-1] : inf));
        }
    }

    cout << dp[(n-1)%2][diff[n-1]] << endl;

    return 0;
}

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