Submission #144363

#	Time	Username	Problem	Language	Result	Execution time	Memory
144363		brcode	Potatoes and fertilizers (LMIO19_bulves)	C++14	24 / 100	564 ms	20104 KiB

bulves

#include <iostream>

using namespace std;
const long long MAXN = 5e5+5;
long long arr[MAXN];
long long dp[MAXN][3];
long long pref[MAXN];
int main(){
    long long n;
    cin>>n;
    for(long long i=1;i<=n;i++){
        long long a,b;
        cin>>a>>b;
        arr[i] = a-b;
        pref[i] = pref[i-1]+arr[i];
    }
    long long ans = 1e9;
    for(long long i=1;i<=n;i++){
        dp[i][0]=dp[i-1][0]+abs(pref[i]);
       
    }
    for(int i=n;i>=1;i--){
        dp[i][1] = dp[i+1][1]+abs(pref[i])-1;
    }
  
    if(pref[n] == 0){
        cout<<dp[n][0]<<endl;
        return 0;
    }
    for(int i=1;i<=n;i++){
        ans = min(ans,dp[i-1][0]+dp[i][1]);
    }
    cout<<ans<<endl;
}

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