oj.uz

답안 #899579

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
899579 2024-01-06T13:39:29 Z sunwukong123 Coin Collecting (JOI19_ho_t4) C++14
0 / 100
 1 ms 2648 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long 
#ifdef LOCAL
void debug_out() {cerr<<endl;}
template <typename Head, typename... Tail>
void debug_out(Head _H, Tail... _T) {cerr<<" "<<to_string(_H);debug_out(_T...);}
#define debug(...) cerr<<"["<<#__VA_ARGS__<<"]:",debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif
const int MAXN = 100005;
const int inf=1000000500ll;
const long long oo =1000000000000000500ll;
const int MOD = (int)1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
typedef pair<int,int> pi; 
int A[MAXN][3];
bool done[MAXN][3];
int ans;

int32_t main() 
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n; cin >> n;
	for(int i=1;i<=2*n;i++){
		int x,y;cin>>x>>y;
		int nx,ny;
		if(y>=2)ny=2;
		else ny=1;

		if(x<=1)nx=1;
		else if(x<=n)nx=x;
		else nx=n;
		ans+=abs(x-nx) + abs(y-ny);
		A[nx][ny]++;
	}
	for(int i=1;i<=n;i++){
		debug(i,A[i][1],A[i][2]);
		if(A[i][1] + A[i][2] >= 2){
			if(A[i][1]){
				--A[i][1];
			} else{
				--A[i][2];
				++ans;
			}

			if(A[i][2]){
				--A[i][2];
			} else{
				--A[i][1];
				++ans;
			}
			A[i+1][1] += A[i][1];
			ans+=A[i][1];
			A[i+1][2] += A[i][2];
			ans+=A[i][2];
		} else{
			int sum=0;
			int lst=i;
			bool found=0;
			for(int j=i;j<=n;j++){
				sum+=A[j][1];
				sum+=A[j][2];
				sum-=2;
				if(sum>=0){
					found=1;
					lst=j;
					break;
				}
			}
			//assert(found==1);
			//go from j to i instead; just refund unused things
			int c1=0,c2=0;
			for(int j=lst;j>=i;j--){
				c1 += A[j][1];
				c2 += A[j][2];

				if(c1){
					--c1;
				} else {
					--c2;
					++ans;
				}

				if(c2){
					--c2;
				} else {
					--c1;
					++ans;
				}
				if(j!=i){
					ans += c1 + c2; // move them to j-1;
				} else{
					ans -= (c1+c2)*(lst-i);
				}
			}
			A[lst+1][1]=c1;
			A[lst+1][2]=c2;
			ans+=c1;
			ans+=c2;
			i=lst;
		}
	}
	cout<<ans;
}

Compilation message

joi2019_ho_t4.cpp: In function 'int32_t main()':
joi2019_ho_t4.cpp:61:9: warning: variable 'found' set but not used [-Wunused-but-set-variable]
   61 |    bool found=0;
      |         ^~~~~

Subtask #1
0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2648 KB Output is correct
3 Correct 1 ms 2516 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Incorrect 1 ms 2396 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #2
0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2648 KB Output is correct
3 Correct 1 ms 2516 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Incorrect 1 ms 2396 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #3
0 / 63.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 0 ms 2648 KB Output is correct
3 Correct 1 ms 2516 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Incorrect 1 ms 2396 KB Output isn't correct
7 Halted 0 ms 0 KB -