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답안 #569551

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
569551 2022-05-27T13:43:11 Z NemanjaSo2005 늑대인간 (IOI18_werewolf) C++14
15 / 100
 4000 ms 35392 KB 
#include "werewolf.h"
#include<bits/stdc++.h>
#define ll long long
using namespace std;
ll N,M,K,Q,prosli[200005],pos[200005],pvred,mesto[200005],niz[200005],stmax[525000],stmin[525000];
vector<int> graf[200005],ret;
struct kveri{
   int poc,kraj,id;
   ll L,R;
} upiti[200005];
void dfs2(int gde,int dub){
   prosli[gde]=pvred;
   mesto[gde]=dub;
   niz[dub]=gde;
   for(int i=0;i<graf[gde].size();i++)
      if(prosli[graf[gde][i]]!=pvred)
         dfs2(graf[gde][i],dub+1);
   return;
}
void dfs(int gde,int L,int R){
   prosli[gde]=pvred;
   pos[gde]++;
   for(int i=0;i<graf[gde].size();i++){
      if(prosli[graf[gde][i]]==pvred)
         continue;
      if(graf[gde][i]<L)
         continue;
      if(graf[gde][i]>R)
         continue;
      dfs(graf[gde][i],L,R);
   }
}
ll getmax(int gde,int lg,int dg,int lc,int dc){
   if(lg>dg)
      swap(lg,dg);
   if(lg==lc and dg==dc)
      return stmax[gde];
   int sred=(lc+dc)/2;
   if(dg<=sred)
      return getmax(gde*2,lg,dg,lc,sred);
   if(lg>sred)
      return getmax(gde*2+1,lg,dg,sred+1,dc);
   return max(getmax(gde*2,lg,sred,lc,sred),getmax(gde*2+1,sred+1,dg,sred+1,dc));
}
ll getmin(int gde,int lg,int dg,int lc,int dc){
   if(lg>dg)
      swap(lg,dg);
   if(lg==lc and dg==dc)
      return stmin[gde];
   int sred=(lc+dc)/2;
   if(dg<=sred)
      return getmin(gde*2,lg,dg,lc,sred);
   if(lg>sred)
      return getmin(gde*2+1,lg,dg,sred+1,dc);
   return min(getmin(gde*2,lg,sred,lc,sred),getmin(gde*2+1,sred+1,dg,sred+1,dc));
}
vector<int> check_validity(int NN, vector<int> X, vector<int> Y,vector<int> S, vector<int> E,vector<int> L, vector<int> R) {
   N=NN;
   M=X.size();
   Q=L.size();
   ret.resize(Q);
   for(int i=0;i<M;i++){
      X[i]++;
      Y[i]++;
      graf[X[i]].push_back(Y[i]);
      graf[Y[i]].push_back(X[i]);
   }
   for(int i=0;i<Q;i++){
      S[i]++;
      E[i]++;
      L[i]++;
      R[i]++;
      upiti[i+1].id=i;
      upiti[i+1].poc=S[i];
      upiti[i+1].kraj=E[i];
      upiti[i+1].L=L[i];
      upiti[i+1].R=R[i];
   }
   if(N*Q<=10000000){
      for(int j=1;j<=Q;j++){
         for(int i=1;i<=N;i++)
            pos[i]=0;
         pvred++;
         dfs(upiti[j].poc,upiti[j].L,N);
         pvred++;
         dfs(upiti[j].kraj,1,upiti[j].R);
         ret[upiti[j].id]=0;
         for(int i=1;i<=N;i++)
            if(pos[i]==2)
               ret[upiti[j].id]=1;
      }
      return ret;
   }
   if(N==M+1){
      for(int i=1;i<=N;i++)
         if(graf[i].size()==1){
            dfs2(i,1);
            break;
         }
      K=1;
      while(K<N)
         K<<=1;
      for(int i=1;i<=N;i++)
         stmin[i+K-1]=stmax[i+K-1]=niz[i];
      for(int i=N+K;i<=K+K;i++)
         stmin[i]=1e9;
      for(int i=K-1;i>=1;i--){
         stmax[i]=max(stmax[i*2],stmax[i*2+1]);
         stmin[i]=min(stmin[i*2],stmin[i*2+1]);
      }
      ll lg,dg,sred,v,m;
      for(int j=1;j<=Q;j++){
         lg=mesto[upiti[j].poc];
         dg=mesto[upiti[j].kraj];
         if(lg==dg){
            ret[upiti[j].id]=1;
            continue;
         }
         if(lg<dg){
            while(lg<=dg){
               sred=(lg+dg)/2;
               v=getmax(1,mesto[upiti[j].poc],sred,1,K);
               m=getmin(1,sred,mesto[upiti[j].kraj],1,K);
               if(v>=upiti[j].L and m<=upiti[j].R){
                  ret[upiti[j].id]=1;
                  break;
               }
               if(v<upiti[j].L and m>upiti[j].R)
                  break;
               if(v>=upiti[j].L)
                  lg=sred+1;
               else
                  dg=sred-1;
            }
            continue;
         }
         swap(lg,dg);
         while(lg<=dg){
            sred=(lg+dg)/2;
            v=getmax(1,sred,mesto[upiti[j].poc],1,K);
            m=getmin(1,mesto[upiti[j].kraj],sred,1,K);
            if(v>=upiti[j].L and m<=upiti[j].R){
               ret[upiti[j].id]=1;
               break;
            }
            if(v<upiti[j].L and m>upiti[j].R)
               break;
            if(v>=upiti[j].L)
               lg=sred+1;
            else
               dg=sred-1;
         }
      }
      return ret;
   }
   return ret;
}

Compilation message

werewolf.cpp: In function 'void dfs2(int, int)':
werewolf.cpp:15:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |    for(int i=0;i<graf[gde].size();i++)
      |                ~^~~~~~~~~~~~~~~~~
werewolf.cpp: In function 'void dfs(int, int, int)':
werewolf.cpp:23:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |    for(int i=0;i<graf[gde].size();i++){
      |                ~^~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 4 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 4 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 296 ms 5436 KB Output is correct
11 Correct 159 ms 5392 KB Output is correct
12 Correct 31 ms 5588 KB Output is correct
13 Correct 345 ms 5444 KB Output is correct
14 Correct 200 ms 5332 KB Output is correct
15 Correct 289 ms 5568 KB Output is correct

Subtask #3
0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4046 ms 35392 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 51.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 4 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 296 ms 5436 KB Output is correct
11 Correct 159 ms 5392 KB Output is correct
12 Correct 31 ms 5588 KB Output is correct
13 Correct 345 ms 5444 KB Output is correct
14 Correct 200 ms 5332 KB Output is correct
15 Correct 289 ms 5568 KB Output is correct
16 Execution timed out 4046 ms 35392 KB Time limit exceeded
17 Halted 0 ms 0 KB -