Submission #371799

#TimeUsernameProblemLanguageResultExecution timeMemory
371799stonejjun03Toy Train (IOI17_train)C++14
0 / 100
2100 ms49132 KiB
#include "train.h" #include<bits/stdc++.h> using namespace std; typedef long long int ll; #define pb push_back ll ans[1010101]; ll chk[1010101]; ll ind[1010101]; ll cnt[1010101]; ll vis[1010101]; ll vis2[1010101]; ll gp[1010101]; queue<ll> q; vector<ll> v[1010101]; vector<ll> rev[1010101]; std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> s) { ll i,j,k,l,m,n=a.size(); std::vector<int> res(n); for(i=0;i<u.size();i++){ v[u[i]].pb(s[i]); rev[s[i]].pb(u[i]); ind[u[i]]++; } ll fl=1; while(fl){ fl=0; for(i=0;i<n;i++){ vis[i]=0; cnt[i]=0; chk[i]=0; if(r[i]==1) vis[i]=1, q.push(i); } while(q.size()){ ll x=q.front(); q.pop(); chk[x]=1; for(auto k:rev[x]){ if(vis[k]) continue; cnt[k]++; if(a[k]==1&&cnt[k]==1) vis[k]=1,q.push(k); if(a[k]==0&&cnt[k]==ind[k]) vis[k]=1,q.push(k); } } for(i=0;i<n;i++){ cnt[i]=0; ans[i]=vis[i]; vis2[i]=0; if(chk[i]==0) vis2[i]=1,q.push(i); } while(q.size()){ ll x=q.front(); q.pop(); chk[x]=0; for(auto k:rev[x]){ if(vis2[k]) continue; cnt[k]++; if(a[k]==0&&cnt[k]==1) vis2[k]=1,q.push(k); if(a[k]==1&&cnt[k]==ind[k]) vis2[k]=1,q.push(k); } } for(i=0;i<n;i++){ if(r[i]&&chk[i]==0){ r[i]==0; fl=1; } } } for(i=0;i<n;i++) res[i]=chk[i]; return res; }

Compilation message (stderr)

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:21:11: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for(i=0;i<u.size();i++){
      |          ~^~~~~~~~~
train.cpp:69:9: warning: value computed is not used [-Wunused-value]
   69 |     r[i]==0;
train.cpp:19:7: warning: unused variable 'j' [-Wunused-variable]
   19 |  ll i,j,k,l,m,n=a.size();
      |       ^
train.cpp:19:9: warning: unused variable 'k' [-Wunused-variable]
   19 |  ll i,j,k,l,m,n=a.size();
      |         ^
train.cpp:19:11: warning: unused variable 'l' [-Wunused-variable]
   19 |  ll i,j,k,l,m,n=a.size();
      |           ^
train.cpp:19:13: warning: unused variable 'm' [-Wunused-variable]
   19 |  ll i,j,k,l,m,n=a.size();
      |             ^
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