Submission #1149464

#	Time	Username	Problem	Language	Result	Execution time	Memory
1149464		arkanefury	Coin Collecting (JOI19_ho_t4)	C++20	100 / 100	37 ms	29396 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define in insert
#define lb lower_bound
#define F first
#define S second
#define int long long
#define sz size()
#define all(v) v.begin(),v.end()
#define FOR1(x, n) for(int j = x; j <= n; j ++)
#define FOR(x, n, m, d) for(int x = n; x <= m; x += d)
#define FORR(x, n, m, d) for(int x = n; x >= m; x -= d)
#define nikita ios_base::sync_with_stdio(0), cin.tie(0);
const int N =  1e6+5;
int a[N], b[N], pref[N], dp[N], c[N][3];
int n,m,k,sum=0,x,y, ans, r, cnt, l, mod = 1e9+7, mt[N];
bool used[N];
vector<int>g[N];
string s, str;
map<int, int>mp;
void solve(){
    nikita
    cin >> n;
    ans = 0;
    FOR(i, 1, 2*n, 1){
        cin >> b[i] >> a[i];
        if( a[i] > 2 )ans += a[i] - 2, a[i] = 2;
        else if(a[i] < 1)ans -= a[i] - 1, a[i] = 1;
        if(b[i] > n)ans += b[i] - n, b[i] = n;
        if(b[i] < 1)ans -= b[i] - 1, b[i] = 1;
        c[b[i]][a[i]] ++;
    }
    x = y = 0;
    FOR(i, 1, n, 1){
        x += c[i][1] - 1, y += c[i][2] - 1;
        if(x > 0 && y < 0){
            sum = min(x, -y);
            ans += sum;
            x -= sum;
            y += sum;
        }
        if(x < 0 && y > 0){
            sum = min(-x, y);
            ans += sum;
            x += sum;
            y -= sum;
        }
        ans += abs(x) + abs(y);
    }
    cout << ans;
}
signed main(){
    nikita
    int tt = 1;
    if(!tt)cin >> tt;
    FOR(i, 1, tt, 1)solve();
}

• Subtask 1: 8 / 8
• Subtask 2: 29 / 29
• Subtask 3: 63 / 63