Submission #248877

#	Time	Username	Problem	Language	Result	Execution time	Memory
248877		ryansee	Wombats (IOI13_wombats)	C++14	55 / 100	8909 ms	262148 KiB

wombats

#include "wombats.h"

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

#define FAST ios_base::sync_with_stdio(false); cin.tie(0);
#define pb push_back
#define eb emplace_back
#define ins insert
#define f first
#define s second
#define cbr cerr<<"hi\n"
#define mmst(x, v) memset((x), v, sizeof ((x)))
#define siz(x) ll(x.size())
#define all(x) (x).begin(), (x).end()
#define lbd(x,y) (lower_bound(all(x),y)-x.begin())
#define ubd(x,y) (upper_bound(all(x),y)-x.begin())
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());    //can be used by calling rng() or shuffle(A, A+n, rng)
inline long long rand(long long x, long long y) { return rng() % (y+1-x) + x; } //inclusivesss
string inline to_string(char c) {string s(1,c);return s;} template<typename T> inline T gcd(T a,T b){ return a==0?llabs(b):gcd(b%a,a); }

using ll=int; 
using ld=long double;
#define FOR(i,s,e) for(ll i=s;i<=ll(e);++i)
#define DEC(i,s,e) for(ll i=s;i>=ll(e);--i)
using pi=pair<ll,ll>; using spi=pair<ll,pi>; using dpi=pair<pi,pi>; 

// #define LLINF ((long long)1e18)
#define INF int(1e9+1e6)
#define MAXN (300006)
ll n, M, H[5003][203], C[5003][203];
struct node {
	int s,e,m;
	ll dp[203][203];
	node*l,*r;
	node(int S,int E){
		s=S,e=E,m=(s+e)>>1;
		if(s^e) l=new node(s,m),r=new node(m+1,e), combine(l,r);
		else {
			FOR(i,0,M-1) FOR(j,i,M-1) if(i^j) dp[i][j]=dp[i][j-1]+H[s][j-1]; else dp[i][j]=0;
			FOR(i,0,M-1) FOR(j,0,i-1) dp[i][j]=dp[j][i];
		}
	}
	void combine(node* l, node* r){
		FOR(i,0,M-1)FOR(j,0,M-1){
			dp[i][j]=INF;
			FOR(k,0,M-1) dp[i][j]=min(dp[i][j],l->dp[i][k]+r->dp[k][j]+C[m][k]);
		}
	}
	void update(int x){
		if(s==e){
			FOR(i,0,M-1) FOR(j,i,M-1) if(i^j) dp[i][j]=dp[i][j-1]+H[s][j-1]; else dp[i][j]=0;
			FOR(i,0,M-1) FOR(j,0,i-1) dp[i][j]=dp[j][i];
			return;
		}
		if(x>m)r->update(x);else l->update(x);
		combine(l,r);
	}
}*seg;
void init(int _r, int _c, int HH[5000][200], int VV[5000][200]) {
    /* ... */
    n=_r, M=_c;
    FOR(i,0,4999)FOR(j,0,199)H[i][j]=HH[i][j],C[i][j]=VV[i][j];
    seg=new node(0, n-1);
}

void changeH(int P, int Q, int W) {
    /* ... */
    H[P][Q]=W;
    seg->update(P);
}

void changeV(int P, int Q, int W) {
    /* ... */
    C[P][Q]=W;
    seg->update(P+1);
}

int escape(int V1, int V2) {
    return seg->dp[V1][V2];
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~

• Subtask 1: 9 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 18 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24