| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 1219119 | nataliaa | Coins (IOI17_coins) | C++20 | 0 ms | 0 KiB |
//#include "coins.h"
#include<bits/stdc++.h>
using namespace std;
vector<int> coin_flips(vector<int> b, int c) {
vector<int> v;
int j = 6;
while(j--) {
v.push_back(c%2);
c/=2;
}
vector<int> v1;
reverse(v.begin(), v.end());
for(int i =0; i < 6; i++) {
if(b[i]!=v[i]) v1.push_back(i);
b[i] = v[i];
}
return v1;
}
int find_coin(vector<int> b) {
int a[6] = {1, 2, 4, 8, 16 , 32};
int c = 0;
for(int i = 0; i < 6; i++) {
if(b[i]==1) c+=a[6-i-1];
}
return c;
}
static string run_test() {
int c;
cin >> c;
vector<int> b(64, 0);
for (int i = 0; i < 8; i++) {
string s;
cin >> s;
for (int j = 0; j < 8; j++) {
b[i * 8 + j] = int(s[j] - '0');
}
}
vector<int> flips = coin_flips(b, c);
if ((int)flips.size() == 0) {
return "0 turn overs";
}
for (int i = 0; i < (int)flips.size(); i++) {
if (flips[i] < 0 || flips[i] > 63) {
return "cell number out of range";
}
b[flips[i]] = 1 - b[flips[i]];
}
int coin = find_coin(b);
if (coin != c) {
return "wrong coin";
}
return "ok";
}
int main() {
int tests;
cin >> tests;
for (int t = 1; t <= tests; t++) {
string result = run_test();
cout << "test #" << t << ": " << result << endl;
}
return 0;
}