Submission #1364046

#	Time	Username	Problem	Language	Result	Execution time	Memory
1364046		dex111222333444555	Coin Collecting (JOI19_ho_t4)	C++20	100 / 100	24 ms	1608 KiB

joi2019_ho_t4

#include <bits/stdc++.h>
#define all(v) begin(v), end(v)
#define ii pair<int, int>
#define fi first
#define se second
#define siz(v) (int)(v).size()
#define BIT(x, i) (((x) >> (i)) & 1)
#define MASK(i) (1LL << (i))
#define dbg(x) "[" #x " = " << x << "]"

using namespace std;

const long long inf = 1e18 + 132;
const int infINT = 1e9 + 132;

template<class X, class Y> bool minimize(X &x, const Y &y){return x > y ? x = y, 1: 0;}

const int MAXN = 1e5 + 5;
const ii d[4] = {{+1, +1}, {+1, -1}, {-1, +1}, {-1, -1}};

int numVal, cnt[MAXN][3];

void input(){
    cin >> numVal;
}

void solve(){
    long long res = 0;

    for(int i = 1; i <= 2 * numVal; i++){
        int x, y; cin >> x >> y;
        int sx = x, sy = y;

        if (x < 1) x = 1;
        else if (x > numVal) x = numVal;

        if (y <= 1) y = 1;
        else y = 2;

        cnt[x][y]++;

        res += abs(sx - x) + abs(sy - y);
    }

    int d1 = 0, d2 = 0;

    for(int x = 1; x <= numVal; x++){
        d1 += (cnt[x][1] - 1);
        d2 += (cnt[x][2] - 1);

        if (d1 < 0 && d2 > 0){
            int t = min(-d1, d2);
            d1 += t; d2 -= t;
            res += t;
        }

        if (d1 > 0 && d2 < 0){
            int t = min(d1, -d2);
            d1 -= t; d2 += t;
            res += t;
        }

        res += abs(d1) + abs(d2);
    }

    cout << res << '\n';
    cerr << res << '\n';
}

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #define task "test"
    if (fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        freopen(task".out", "w", stdout);
    }
    int t = 1;
//    cin >> t;
    while(t--){
        input();
        solve();
    }
    cerr << (1.0 * clock()) / CLOCKS_PER_SEC << ".s\n";
}

Compilation message (stderr)

joi2019_ho_t4.cpp: In function 'int main()':
joi2019_ho_t4.cpp:74:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:75:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |         freopen(task".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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