Submission #104661

#TimeUsernameProblemLanguageResultExecution timeMemory
104661ShtefIli (COI17_ili)C++14
100 / 100
741 ms62328 KiB
#include <iostream> #include <cstring> #include <utility> using namespace std; typedef pair <char, int> pci; #define x first #define y second #define mp make_pair int n, m, mali[10005], veliki[10005]; string s; pci koji[10005][2]; void dfs(int x){ for(int i = 0 ; i < 2 ; ++i){ pci o = koji[x][i]; if(o.x == 'x'){ mali[o.y] = 0; } else if(veliki[o.y]){ veliki[o.y] = 0; dfs(o.y); } } } void postavinule(){ for(int i = 1 ; i <= m ; ++i){ if(veliki[i]) continue; dfs(i); } for(int i = 1 ; i <= m ; ++i){ if(veliki[i] != -1) continue; bool p = 1; for(int j = 0 ; j < 2 ; ++j){ if(koji[i][j].x == 'x'){ if(mali[koji[i][j].y]){ p = 0; break; } } else{ if(veliki[koji[i][j].y]){ p = 0; break; } } } if(p){ veliki[i] = 0; } } } bool imax[10005][10005], sadrz[10005]; void postavijedinice(){ for(int i = 1 ; i <= m ; ++i){ for(int j = 0 ; j < 2 ; ++j){ if(koji[i][j].x == 'x'){ if(mali[koji[i][j].y]){ imax[i][koji[i][j].y] = 1; } } else{ if(veliki[koji[i][j].y]){ for(int v = 1 ; v <= n ; ++v){ if(mali[v] && imax[koji[i][j].y][v]){ imax[i][v] = 1; } } } } } } for(int i = 1 ; i <= m ; ++i){ if(veliki[i] != -1) continue; for(int j = 1 ; j <= m ; ++j){ sadrz[j] = 1; for(int v = 0 ; v < 2 ; ++v){ if(koji[j][v].x == 'x'){ if(mali[koji[j][v].y] && !imax[i][koji[j][v].y]){ sadrz[j] = 0; break; } } else{ if(veliki[koji[j][v].y] && !sadrz[koji[j][v].y]){ sadrz[j] = 0; break; } } } if(sadrz[j] && veliki[j] == 1){ veliki[i] = 1; break; } } } } int main(){ ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0); cin >> n >> m; cin >> s; memset(mali, -1, sizeof(mali)); memset(veliki, -1, sizeof(veliki)); for(int i = 1 ; i <= m ; ++i){ if(s[i - 1] == '?') continue; veliki[i] = s[i - 1] - '0'; } for(int i = 1 ; i <= m ; ++i){ for(int j = 0 ; j < 2 ; ++j){ cin >> koji[i][j].x >> koji[i][j].y; } } postavinule(); /* for(int i = 1 ; i <= n ; ++i){ cout << mali[i] << ' '; } cout << endl; for(int i = 1 ; i <= m ; ++i){ cout << veliki[i] << ' '; } cout << endl; */ postavijedinice(); for(int i = 1 ; i <= m ; ++i){ if(veliki[i] == -1){ cout << "?"; } else{ char c = veliki[i] + '0'; cout << c; } } cout << endl; return 0; }
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