This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.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(5001);
int poziom = poz[i];
s[i][0] = poziom % 2;
for(int j = 1; j <= N; ++j){
s[i][j] = -3;
}
}
for(int i = 0; i <= 9; ++i){
for(int j = 0; j < 2; ++j){
na_poziomie[i].push_back(50);
}
}
obl(0, 1, 5000, 1);
// for(int i = 0; i <= 20; ++i){
// cout << "i: " << (i <= 9 ? "0" : "") << i << " ";
// for(int j = 0; j <= N; ++j){
// cout << (s[i][j] >= 0 ? "+" : "") << s[i][j] << " ";
// }
// cout << "\N";
// }
// cout << "\N";
return s;
}
// int main(){
// devise_strategy(500);
// return 0;
// }
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