Submission #765349

#	Time	Username	Problem	Language	Result	Execution time	Memory
765349		vjudge1	Speedrun (RMI21_speedrun)	C++17	19 / 100	201 ms	48260 KiB

speedrun

#include <bits/stdc++.h>
#include "speedrun.h"
using namespace std;
const int MAXN=1e3+5;
vector<int> sos[MAXN][MAXN];
int cnt[MAXN];
vector<vector<int> > g(MAXN);
void assignHints(int subtask, int N, int A[], int B[]) {
	if(subtask==1) {
		setHintLen(N);
		for(int i=1; i<N; i++) {
			g[A[i]].push_back(B[i]);
			g[B[i]].push_back(A[i]);
		}
		for(int i=1; i<=N; i++) {
			for(auto to : g[i])setHint(i, to, 1);
		}
	}
	if(subtask==2) {
		setHintLen(10);
		int x=0;
		for(int i=1; i<N; i++) {
			g[A[i]].push_back(B[i]);
			g[B[i]].push_back(A[i]);
			if(g[A[i]].size()>1)x=i;
		}
		if(x==0)x=1;
		for(int j=1; j<=10; j++)setHint(x, j, 1);
		for(int i=1; i<=N; i++) {
			if(g[i].size()==1) {
				for(int j=1; j<=10; j++) {
					setHint(i, j, (x & (1<<(j-1)) ? 1 : 0));
				}
			}
		}
	}
	if(subtask==3) {
		setHintLen(20);
		for(int i=1; i<N; i++) {
			g[A[i]].push_back(B[i]);
			g[B[i]].push_back(A[i]);
		}
		for(int i=1; i<=N; i++) {
			int cnt=0;
			for(auto to : g[i]) {
				if(cnt==0) {
					for(int j=1; j<=10; j++) {
						setHint(i, j, (to&(1<<(j-1)) ? 1 : 0));
					}
					cnt++;
				}else {
					for(int j=11; j<=20; j++) {
						setHint(i, j, (to&(1<<(j-11)) ? 1 : 0));
					}
				}
			}
		}
	}
	return;
}
int us[MAXN];
void dfs(int v, int p, int N, int subtask) {
	us[v]=1;
	if(subtask==1) {
		vector<int> gg;
		for(int j=1; j<=N; j++) {
			if(getHint(j))gg.push_back(j);
		} 
		for(auto to : gg) {
			if(!us[to]) {
				goTo(to);
				dfs(to, v, N, subtask);
			}
		}
		if(v!=p)goTo(p);
		else return;
	}
	if(subtask==3) {
		vector<int> gg;
		int x=0, y=0;
		for(int j=1; j<=10; j++) {
			if(getHint(j))x+=(1<<(j-1));
		}
		for(int j=11; j<=20; j++) {
			if(getHint(j))y+=(1<<(j-11));
		}
		if(x>0)gg.push_back(x);
		if(y>0)gg.push_back(y);
		for(auto to : gg) {
			if(!us[to]) {
				goTo(to);
				dfs(to, v, N, subtask);
			}
		}
		if(v!=p)goTo(p);
		else return;
	}
}
void speedrun(int subtask, int N, int start) {
	if(subtask==1) {
		int len=getLength();
		dfs(start, start, N, subtask);
	}
	if(subtask==3) {
		int len=getLength();
		dfs(start, start, N, subtask);
	}else {
		int len=getLength();
		bool ok=1;
		for(int j=1; j<=10; j++) {
			if(!getHint(j)) {
				ok=0;
				break;
			}
		}
		if(ok) {
			for(int i=1; i<=N; i++) {
				if(start!=i) {
					goTo(i);
					goTo(start);
				}
			}
		}else {
			int x=0;
			for(int j=1; j<=10; j++) {
				if(getHint(j))x+=(1<<(j-1));
			}
			goTo(x);
			for(int i=1; i<=N; i++) {
				goTo(i);
				goTo(x);
			}
		}
	}
	return;
}

Compilation message (stderr)

speedrun.cpp: In function 'void speedrun(int, int, int)':
speedrun.cpp:101:7: warning: unused variable 'len' [-Wunused-variable]
  101 |   int len=getLength();
      |       ^~~
speedrun.cpp:105:7: warning: unused variable 'len' [-Wunused-variable]
  105 |   int len=getLength();
      |       ^~~
speedrun.cpp:108:7: warning: unused variable 'len' [-Wunused-variable]
  108 |   int len=getLength();
      |       ^~~

• Subtask 1: 0 / 21
• Subtask 2: 0 / 8
• Subtask 3: 19 / 19
• Subtask 4: 0 / 12
• Subtask 5: 0 / 40