Submission #669319

#TimeUsernameProblemLanguageResultExecution timeMemory
669319berrThe Potion of Great Power (CEOI20_potion)C++17
0 / 100
209 ms98732 KiB
#include <bits/stdc++.h> using namespace std; const int N = 1e5+30; vector<string> sts[N]; vector<array<int, 2>> adj[N]; vector<int> h, st[N]; map<array<int, 2>, int> mp; string s; void init(int n, int d, int H[]){ for(int i=0; i<d; i++){ s+='0'; } for(int i=0; i<n; i++){ sts[i].push_back(s); st[i].push_back(-1); } for(int i=0; i<n; i++){ h.push_back(H[i]); } } void curseChanges(int u, int a[], int b[]){ for(int i=0; i<u; i++){ adj[a[i]].push_back({h[b[i]], b[i]}); adj[b[i]].push_back({h[a[i]], a[i]}); } for(int i=0; i<N; i++){ sort(adj[i].begin(), adj[i].end()); } for(int i=0; i<N; i++){ for(int l=0; l<adj[i].size(); l++){ mp[{i, adj[i][l][1]}]=l; } } /*for(int i=0; i<u; i++){ int x=a[i], y=b[i]; string ss=sts[x].back(); int pos=mp[{x, y}]; if(ss[pos]=='1') ss[pos]='0'; else ss[pos]='1'; sts[x].push_back(ss); st[x].push_back(i); swap(x, y); ss=sts[x].back(); pos=mp[{x, y}]; if(ss[pos]=='1') ss[pos]='0'; else ss[pos]='1'; sts[x].push_back(ss); st[x].push_back(i); }*/ } int question(int x, int y, int v){ /* int posx = lower_bound(st[x].begin(), st[x].end(), v)-st[x].begin()-1; int posy = lower_bound(st[y].begin(), st[y].end(), v)-st[y].begin()-1; */ int posx=0, posy=0; if(posx >= st[x].size() || posy <= 0 || st[x][posx] > v) return 1e9; if(posy >= st[y].size() || posy <= 0 || st[y][posy] > v) return 1e9; string sx = sts[x][posx], sy=sts[y][posy]; int lx=0, ly=0; while(lx<sx.size() && sx[lx]=='0') lx++; while(ly<sy.size() && sy[ly]=='0') ly++; int ans=1e9; /* while(lx<sx.size() && ly < sy.size()){ int vx=adj[x][lx][0]; int vy=adj[y][ly][0]; ans=min(ans, abs(vx-vy)); if(vx < vy){ lx ++; while(lx<sx.size() && sx[lx]=='0') lx++; } else if(vx > vy){ ly ++; while(ly<sy.size() && sy[ly]=='0') ly++; } else{ break; } }*/ return ans; }

Compilation message (stderr)

potion.cpp: In function 'void curseChanges(int, int*, int*)':
potion.cpp:43:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |         for(int l=0; l<adj[i].size(); l++){
      |                      ~^~~~~~~~~~~~~~
potion.cpp: In function 'int question(int, int, int)':
potion.cpp:83:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   83 |     if(posx >= st[x].size() || posy <= 0 || st[x][posx] > v) return 1e9;
      |        ~~~~~^~~~~~~~~~~~~~~
potion.cpp:84:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   84 |     if(posy >= st[y].size() || posy <= 0 || st[y][posy] > v) return 1e9;
      |        ~~~~~^~~~~~~~~~~~~~~
potion.cpp:89:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |     while(lx<sx.size() &&
      |           ~~^~~~~~~~~~
potion.cpp:91:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     while(ly<sy.size() && sy[ly]=='0') ly++;
      |           ~~^~~~~~~~~~
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