Submission #1029112

#TimeUsernameProblemLanguageResultExecution timeMemory
1029112jakubmz2Prisoner Challenge (IOI22_prison)C++17
100 / 100
13 ms1560 KiB
#include <bits/stdc++.h> #include "prison.h" using namespace std; typedef long long ll; // 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 //poziom 1 poziom 2 poziom 3 poziom 4 poziom 5 poziom 6 poziom 7 poziom 8 int poz[21]; vector<vector<int>> s(21); vector<int> na_poziomie[10]; //vector<pair<int,int>> przedzialy[10]; void obl(int gl, int a, int b, int jak){ if(a > b) return; int x, y; if(gl % 2 == 0){ x = -1; y = -2; } else{ x = -2; y = -1; } //przedzialy[gl].push_back({a,b}); if(gl < 5){ int kt = na_poziomie[gl][jak - 1]; //cout << a << " " << b << " " << gl << "\N"; s[kt][b] = y; s[kt][a] = x; for(int i = na_poziomie[gl+1][0]; i <= 20; ++i){ if(poz[i] % 2 == 0){ s[i][a] = -1; s[i][b] = -2; } else{ s[i][a] = -2; s[i][b] = -1; } } a++; b--; if(a > b) return; int c = a + (b - a) / 3; int d = b - (b - a) / 3; if((b - a + 1) % 3 == 0){ d--; } if(a <= c){ for(int i = a; i <= c; ++i){ s[kt][i] = na_poziomie[gl + 1][0]; } for(int i = gl + 1; i <= gl + 1; ++i){ int gdz = na_poziomie[gl + 1][0]; if(gdz == 0 or gdz > 20) continue; for(int j = c + 1; j <= b; ++j){ s[gdz][j] = (i % 2 == 1 ? -1 : -2); } } obl(gl + 1, a, c, 1); } if(c+1 <= d){ for(int i = c + 1; i <= d; ++i){ s[kt][i] = na_poziomie[gl + 1][1]; } for(int i = gl + 1; i <= gl + 1; ++i){ int gdz = na_poziomie[gl + 1][1]; if(gdz == 0 or gdz > 20) continue; for(int j = a; j <= c; ++j){ s[gdz][j] = ((i % 2 == 1) ? -2 : -1); } for(int j = d + 1; j <= b; ++j){ s[gdz][j] = (i % 2 == 1 ? -1 : -2); } } obl(gl + 1, c + 1, d, 2); } if(d+1 <= b){ for(int i = d + 1; i <= b; ++i){ s[kt][i] = na_poziomie[gl + 1][2]; } for(int i = gl + 1; i <= gl + 1; ++i){ int gdz = na_poziomie[gl + 1][2]; if(gdz == 0 or gdz > 20) continue; for(int j = a; j <= d; ++j){ s[gdz][j] = ((i % 2 == 1) ? -2 : -1); } } obl(gl + 1, d + 1, b, 3); } } else{ int kt = na_poziomie[gl][jak - 1]; //cout << a << " " << b << " " << gl << " " << kt << "\N"; s[kt][b] = y; s[kt][a] = x; for(int i = na_poziomie[gl+1][0]; i <= 20; ++i){ //cout << i << " debug\N"; if(poz[i] % 2 == 0){ s[i][a] = -1; s[i][b] = -2; } else{ s[i][a] = -2; s[i][b] = -1; } } a++; b--; if(a > b) return; int c = a + (b - a) / 2; if(b - a + 1 <= 2){ c = b; } //cout << a << " " << c << " " << b << "\N"; if(a <= c){ //cout << "%\N"; for(int i = a; i <= c; ++i){ s[kt][i] = na_poziomie[gl + 1][0]; } for(int i = gl + 1; i <= gl + 1; ++i){ int gdz = na_poziomie[gl + 1][0]; if(gdz == 0 or gdz > 20) continue; for(int j = c + 1; j <= b; ++j){ s[gdz][j] = (i % 2 == 1 ? -1 : -2); } } obl(gl + 1, a, c, 1); } if(c + 1 <= b){ //cout << "^\N"; for(int i = c + 1; i <= b; ++i){ s[kt][i] = na_poziomie[gl + 1][1]; } for(int i = gl + 1; i <= gl + 1; ++i){ int gdz = na_poziomie[gl + 1][1]; if(gdz == 0 or gdz > 20) continue; for(int j = a; j <= c; ++j){ s[gdz][j] = (i % 2 == 1 ? -2 : -1); } } obl(gl + 1, c + 1, b, 2); } } return; } vector<vector<int>> devise_strategy(int N){ poz[0] = 0; poz[1] = poz[2] = poz[3] = 1; poz[4] = poz[5] = poz[6] = 2; poz[7] = poz[8] = poz[9] = 3; poz[10] = poz[11] = poz[12] = 4; poz[13] = poz[14] = poz[15] = 5; poz[16] = poz[17] = 6; poz[18] = poz[19] = 7; poz[20] = 8; for(int i = 0; i <= 20; ++i){ na_poziomie[poz[i]].push_back(i); } for(int i = 0; i <= 20; ++i){ s[i].resize(N + 1); int poziom = poz[i]; s[i][0] = poziom % 2; for(int j = 1; j <= N; ++j){ s[i][j] = 0; } } for(int i = 0; i <= 9; ++i){ for(int j = 0; j < 2; ++j){ na_poziomie[i].push_back(50); } } obl(0, 1, N, 1); // for(int i = 0; i <= 10; ++i){ // for(int j = 0; j <= N; ++j){ // cout << s[i][j] << " "; // } // cout << "\n"; // } // cout << "\n"; return s; }
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