oj.uz

Submission #99055

# Submission time Handle Problem Language Result Execution time Memory
99055 2019-02-28T08:29:25 Z 구재현(#2854, gs14004) Coin Collecting (JOI19_ho_t4) C++17
8 / 100
 79 ms 79452 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 200005;
using lint = long long;
using pi = pair<int, int>;

struct pnt{
	int x, y;
	bool operator<(const pnt &p)const{
		return pi(x, y) < pi(p.x, p.y);
	}
}a[MAXN];

int n;
int cnt[3][MAXN];
lint dp[MAXN][50];

lint sum(int x){ return 1ll * x * (x + 1) / 2; }

lint sum_intv(int l, int r, int x){
	if(l <= x && x < r){
		return sum(x - l) + sum(r - 1 - x);
	}
	if(x >= r) return sum(x - l) - sum(x - r);
	return sum(r - x - 1) - sum(l - x - 1);
}

int thres[MAXN];
map<pi, lint> mp;

lint f(int l, int r, int pos){
	if(pos == n + 1) return l == r ? 0 : 1e18;
	if(cnt[1][pos] == 0 && cnt[2][pos] == 0) return f(l, r, pos + 1);
	if(mp.find(pi(l, r)) != mp.end()) return mp[pi(l, r)];
	int up = cnt[1][pos];
	int dn = cnt[2][pos];
	lint ret = 1e18;
	for(int i=0; i<=up+dn; i++){
		int nl = l + i, nr = up + dn - i + r;
		if(nl > n + 1 || nr > n + 1 || abs(nl - nr) > thres[pos]) continue;
		lint cost = f(nl, nr, pos + 1);
		cost += abs(up - (nl - l));
		cost += sum_intv(l, nl, pos);
		cost += sum_intv(r, nr, pos);
		ret = min(ret, cost);
	}
	return mp[pi(l, r)] = ret;
}

int main(){
	scanf("%d",&n);
	memset(dp, -1, sizeof(dp));
	lint cdap = 0;
	for(int i=0; i<n*2; i++){
		scanf("%d %d",&a[i].x,&a[i].y);
		if(a[i].x < 1){
			cdap += 1 - a[i].x;
			a[i].x = 1;
		}
		if(a[i].x > n){
			cdap += a[i].x - n;
			a[i].x = n;
		}
		if(a[i].y < 1){
			cdap += 1 - a[i].y;
			a[i].y = 1;
		}
		if(a[i].y > 2){
			cdap += a[i].y - 2;
			a[i].y = 2;
		}
		cnt[a[i].y][a[i].x]++;
	}
	for(int i=1; i<=n; i++){
		for(int j=-2; j<=2; j++){
			if(i + j >= 1 && i + j <= n){
				thres[i] += cnt[1][i+j] + cnt[2][i+j];
			}
		}
	}
	sort(a, a + n + n);
	cout << cdap + f(1, 1, 1) << endl;
}

Compilation message

joi2019_ho_t4.cpp: In function 'int main()':
joi2019_ho_t4.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ~~~~~^~~~~~~~~
joi2019_ho_t4.cpp:55:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&a[i].x,&a[i].y);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 78584 KB Output is correct
2 Correct 69 ms 78584 KB Output is correct
3 Correct 72 ms 78588 KB Output is correct
4 Correct 62 ms 78584 KB Output is correct
5 Correct 64 ms 78584 KB Output is correct
6 Correct 61 ms 78584 KB Output is correct
7 Correct 58 ms 78584 KB Output is correct
8 Correct 63 ms 78712 KB Output is correct
9 Correct 70 ms 78584 KB Output is correct
10 Correct 65 ms 78584 KB Output is correct
11 Correct 64 ms 78584 KB Output is correct
12 Correct 73 ms 78584 KB Output is correct
13 Correct 63 ms 78584 KB Output is correct
14 Correct 62 ms 78584 KB Output is correct
15 Correct 64 ms 78584 KB Output is correct
16 Correct 62 ms 78712 KB Output is correct
17 Correct 62 ms 78772 KB Output is correct
18 Correct 61 ms 78584 KB Output is correct
19 Correct 69 ms 78584 KB Output is correct
20 Correct 72 ms 78584 KB Output is correct
21 Correct 63 ms 78584 KB Output is correct
22 Correct 64 ms 78584 KB Output is correct
23 Correct 63 ms 78584 KB Output is correct
24 Correct 69 ms 78584 KB Output is correct
25 Correct 79 ms 78584 KB Output is correct
26 Correct 71 ms 78712 KB Output is correct
27 Correct 66 ms 78608 KB Output is correct
28 Correct 64 ms 78712 KB Output is correct
29 Correct 67 ms 78584 KB Output is correct
30 Correct 64 ms 78584 KB Output is correct
31 Correct 73 ms 78584 KB Output is correct
32 Correct 64 ms 78584 KB Output is correct
33 Correct 64 ms 78584 KB Output is correct

Subtask #2
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 78584 KB Output is correct
2 Correct 69 ms 78584 KB Output is correct
3 Correct 72 ms 78588 KB Output is correct
4 Correct 62 ms 78584 KB Output is correct
5 Correct 64 ms 78584 KB Output is correct
6 Correct 61 ms 78584 KB Output is correct
7 Correct 58 ms 78584 KB Output is correct
8 Correct 63 ms 78712 KB Output is correct
9 Correct 70 ms 78584 KB Output is correct
10 Correct 65 ms 78584 KB Output is correct
11 Correct 64 ms 78584 KB Output is correct
12 Correct 73 ms 78584 KB Output is correct
13 Correct 63 ms 78584 KB Output is correct
14 Correct 62 ms 78584 KB Output is correct
15 Correct 64 ms 78584 KB Output is correct
16 Correct 62 ms 78712 KB Output is correct
17 Correct 62 ms 78772 KB Output is correct
18 Correct 61 ms 78584 KB Output is correct
19 Correct 69 ms 78584 KB Output is correct
20 Correct 72 ms 78584 KB Output is correct
21 Correct 63 ms 78584 KB Output is correct
22 Correct 64 ms 78584 KB Output is correct
23 Correct 63 ms 78584 KB Output is correct
24 Correct 69 ms 78584 KB Output is correct
25 Correct 79 ms 78584 KB Output is correct
26 Correct 71 ms 78712 KB Output is correct
27 Correct 66 ms 78608 KB Output is correct
28 Correct 64 ms 78712 KB Output is correct
29 Correct 67 ms 78584 KB Output is correct
30 Correct 64 ms 78584 KB Output is correct
31 Correct 73 ms 78584 KB Output is correct
32 Correct 64 ms 78584 KB Output is correct
33 Correct 64 ms 78584 KB Output is correct
34 Correct 79 ms 79452 KB Output is correct
35 Correct 67 ms 78840 KB Output is correct
36 Incorrect 71 ms 79352 KB Output isn't correct
37 Halted 0 ms 0 KB -

Subtask #3
0 / 63.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 78584 KB Output is correct
2 Correct 69 ms 78584 KB Output is correct
3 Correct 72 ms 78588 KB Output is correct
4 Correct 62 ms 78584 KB Output is correct
5 Correct 64 ms 78584 KB Output is correct
6 Correct 61 ms 78584 KB Output is correct
7 Correct 58 ms 78584 KB Output is correct
8 Correct 63 ms 78712 KB Output is correct
9 Correct 70 ms 78584 KB Output is correct
10 Correct 65 ms 78584 KB Output is correct
11 Correct 64 ms 78584 KB Output is correct
12 Correct 73 ms 78584 KB Output is correct
13 Correct 63 ms 78584 KB Output is correct
14 Correct 62 ms 78584 KB Output is correct
15 Correct 64 ms 78584 KB Output is correct
16 Correct 62 ms 78712 KB Output is correct
17 Correct 62 ms 78772 KB Output is correct
18 Correct 61 ms 78584 KB Output is correct
19 Correct 69 ms 78584 KB Output is correct
20 Correct 72 ms 78584 KB Output is correct
21 Correct 63 ms 78584 KB Output is correct
22 Correct 64 ms 78584 KB Output is correct
23 Correct 63 ms 78584 KB Output is correct
24 Correct 69 ms 78584 KB Output is correct
25 Correct 79 ms 78584 KB Output is correct
26 Correct 71 ms 78712 KB Output is correct
27 Correct 66 ms 78608 KB Output is correct
28 Correct 64 ms 78712 KB Output is correct
29 Correct 67 ms 78584 KB Output is correct
30 Correct 64 ms 78584 KB Output is correct
31 Correct 73 ms 78584 KB Output is correct
32 Correct 64 ms 78584 KB Output is correct
33 Correct 64 ms 78584 KB Output is correct
34 Correct 79 ms 79452 KB Output is correct
35 Correct 67 ms 78840 KB Output is correct
36 Incorrect 71 ms 79352 KB Output isn't correct
37 Halted 0 ms 0 KB -