Submission #556305

#	Time	Username	Problem	Language	Result	Execution time	Memory
556305		new_acc	Cop and Robber (BOI14_coprobber)	C++14	100 / 100	772 ms	8076 KiB

coprobber

#include "coprobber.h"
#include<bits/stdc++.h>
#define fi first
#define se second
#define pitem item*
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int> vi;
typedef vector<ll> vl;
const int N=500;
const int SS=1<<19;
const int INFi=2e9;
const ll INFl=1e13;
const ll mod2=998244353;
const ll mod=1e9+7;
const ll mod3=1000696969;
const ll p=70032301;
const ull p2=913;
const int L=20;
struct st{
    int a,b,c;
};
bool dp[N][N][2];
int nxt[N][N],il[N][N],last;
vi graf[N];
int start(int n, bool t[N][N]){
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++)
            if(t[i][j]) graf[i].push_back(j);
    }
    deque<st>deq;
    for(int i=0;i<n;i++){
        deq.push_back({i,i,0}),deq.push_back({i,i,1});
        dp[i][i][0]=1,dp[i][i][1]=1;
    }
    while(deq.size()){
        st v=deq.front();
        deq.pop_front();
        if(v.c){
            for(auto u:graf[v.b]){
                il[u][v.a]++;
                if(il[u][v.a]==graf[u].size()) deq.push_back({u,v.a,0}),dp[u][v.a][0]=1;
            }
        }else{
            for(auto u:graf[v.b])
                if(!dp[u][v.a][1]) deq.push_back({u,v.a,1}),nxt[u][v.a]=v.b,dp[u][v.a][1]=1;
            if(!dp[v.b][v.a][1]) deq.push_back({v.b,v.a,1}),nxt[v.b][v.a]=v.b,dp[v.b][v.a][1]=1;
        }
    }
    for(int i=0;i<n;i++){
        bool ok=1;
        for(int k=0;k<n;k++) ok&=dp[i][k][1];
        if(ok){
            last=i;
            return i;
        }
    }
    return -1;
}

int nextMove(int R){
    int res=nxt[last][R];
    last=res;
    return res;
}

Compilation message (stderr)

coprobber.cpp: In function 'int start(int, bool (*)[500])':
coprobber.cpp:43:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |                 if(il[u][v.a]==graf[u].size()) deq.push_back({u,v.a,0}),dp[u][v.a][0]=1;
      |                    ~~~~~~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 14 / 14
• Subtask 3: 30 / 30
• Subtask 4: 40 / 40