Submission #334078

#TimeUsernameProblemLanguageResultExecution timeMemory
334078nicholaskHighway Tolls (IOI18_highway)C++14
Compilation error
0 ms0 KiB
#include "highway.h" #include <bits/stdc++.h> #define x first #define y second #define ll long long using namespace std; vector <pair <ll,ll> > g[90000]; //first: connection to which node, second: edge no. ll dist; vector <pair <ll,ll> > poss; void dfs(ll cur,ll prev,ll d){ for (auto&i:g[cur]){ if (i.x==prev) continue; if (d+1==dist) poss.push_back({i.y,i.x}); else dfs(i.x,cur,d+1); } } void find_pair(int N,vector <int> U,vector <int> V,int A,int B){ ll n=N; vector <ll> u=U; vector <ll> v=V; ll a=A; ll b=B; int m=u.size(); for (ll i=0; i<m; i++){ g[u[i]].push_back({v[i],i}); g[v[i]].push_back({u[i],i}); } vector <ll> query(m,0ll); dist=ask(query)/a; bool can=1; for (ll i=0; i<m; i++){ if (u[i]!=i||v[i]!=i+1){ can=0; break; } } if (can){ //subtask 3 vector <ll> possible; for (ll i=0; i<n; i++) possible.push_back(i); while (possible.size()>1){ vector <ll> f,s; for (ll i=0; i<possible.size(); i++){ if (i<(possible.size()/2)) f.push_back(possible[i]); else s.push_back(possible[i]); } vector <ll> query(m,0ll); for (auto&i:f) query[i]=1; if (ask(query)==a*dist) possible=s; else possible=f; } answer(possible[0],possible[0]+dist); } else { dfs(0,-1,0); while (poss.size()>1){ vector <pair <ll,ll> > f,s; for (int i=0; i<poss.size(); i++){ if (i<(poss.size()/2)) f.push_back(poss[i]); else s.push_back(poss[i]); } vector <ll> query(m,0); for (auto&i:f) query[i.x]=1; if (ask(query)==a*dist) poss=s; else poss=f; } answer(0,poss[0].y); } }

Compilation message (stderr)

highway.cpp: In function 'void find_pair(int, std::vector<int>, std::vector<int>, int, int)':
highway.cpp:19:16: error: conversion from 'vector<int>' to non-scalar type 'vector<long long int>' requested
   19 |  vector <ll> u=U;
      |                ^
highway.cpp:20:16: error: conversion from 'vector<int>' to non-scalar type 'vector<long long int>' requested
   20 |  vector <ll> v=V;
      |                ^
highway.cpp:29:11: error: invalid initialization of reference of type 'const std::vector<int>&' from expression of type 'std::vector<long long int>'
   29 |  dist=ask(query)/a;
      |           ^~~~~
In file included from highway.cpp:1:
highway.h:7:39: note: in passing argument 1 of 'long long int ask(const std::vector<int>&)'
    7 | long long ask(const std::vector<int> &w);
      |               ~~~~~~~~~~~~~~~~~~~~~~~~^
highway.cpp:42:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |    for (ll i=0; i<possible.size(); i++){
      |                 ~^~~~~~~~~~~~~~~~
highway.cpp:43:10: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     if (i<(possible.size()/2)) f.push_back(possible[i]);
      |         ~^~~~~~~~~~~~~~~~~~~~
highway.cpp:48:12: error: invalid initialization of reference of type 'const std::vector<int>&' from expression of type 'std::vector<long long int>'
   48 |    if (ask(query)==a*dist) possible=s;
      |            ^~~~~
In file included from highway.cpp:1:
highway.h:7:39: note: in passing argument 1 of 'long long int ask(const std::vector<int>&)'
    7 | long long ask(const std::vector<int> &w);
      |               ~~~~~~~~~~~~~~~~~~~~~~~~^
highway.cpp:56:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |    for (int i=0; i<poss.size(); i++){
      |                  ~^~~~~~~~~~~~
highway.cpp:57:10: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     if (i<(poss.size()/2)) f.push_back(poss[i]);
      |         ~^~~~~~~~~~~~~~~~
highway.cpp:62:12: error: invalid initialization of reference of type 'const std::vector<int>&' from expression of type 'std::vector<long long int>'
   62 |    if (ask(query)==a*dist) poss=s;
      |            ^~~~~
In file included from highway.cpp:1:
highway.h:7:39: note: in passing argument 1 of 'long long int ask(const std::vector<int>&)'
    7 | long long ask(const std::vector<int> &w);
      |               ~~~~~~~~~~~~~~~~~~~~~~~~^
highway.cpp:22:5: warning: unused variable 'b' [-Wunused-variable]
   22 |  ll b=B;
      |     ^