Submission #1187836

#	Time	Username	Problem	Language	Result	Execution time	Memory
1187836		sitingfake	Potatoes and fertilizers (LMIO19_bulves)	C++20	0 / 100	0 ms	320 KiB

bulves

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

// define

#define execute cerr << "Time elapsed: " << (1.0 * clock() / CLOCKS_PER_SEC) << "s";
#define ll long long
#define ld long double
#define ii pair<int,int>
#define se second
#define fi first
#define iii pair<int,ii>
#define all(v) v.begin(),v.end()
#define bit(x,i) (((x)>>(i))&1LL)
#define flip(x,i) ((x)^(1LL<<(i)))
#define ms(d,x) memset(d,x,sizeof(d))
#define sitingfake 1
#define orz 1

template<typename T> bool maximize(T &a, const T &b)
{
    if(a < b) {a = b; return 1;}
    return 0;
}
template<typename T> bool minimize(T &a, const T &b)
{
    if(a > b) {a = b;return 1;}
    return 0;
}

//constant

const ll mod = 1e9+7;
const long long linf = 4557430888798830399;
const int inf = 1061109567;
const int maxarr = 1e6+5;
const int dx[] = {0,1,-1,0};
const int dy[] = {1,0,0,-1};


//code

const int maxn = 5e5 + 7;

int n;

ll pre[maxn];

void solve(void)
{
    cin >> n;

    for(int i=1;i<=n;i++)
    {
        int x , y;
        cin >> x >> y;
        pre[i] = pre[i-1] + x - y;
    }
    ll ans = 0;
    priority_queue<ll> q;
    for(int i=1;i<=n;i++)
    {
        ans += abs(pre[i]);
        if(pre[i] < 0) pre[i] = 0;
        q.push(pre[i]);
        q.push(pre[i]);
        q.pop();
    }
    while(!q.empty())
    {
        ans -= q.top();
        q.pop();
    }
    cout << ans;
}

signed main()
{
   ios_base::sync_with_stdio(0);
   cin.tie(0);
   cout.tie(0);

   #define task ""

   if(fopen(task".inp","r"))
   {
       freopen(task".inp","r",stdin);
       freopen(task".out","w",stdout);
   }

   int tc; tc = 1;

   while(tc--) solve();

   //execute;
}

/**
**/

Compilation message (stderr)

bulves.cpp: In function 'int main()':
bulves.cpp:87:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |        freopen(task".inp","r",stdin);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
bulves.cpp:88:15: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   88 |        freopen(task".out","w",stdout);
      |        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

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