Submission #849150

#TimeUsernameProblemLanguageResultExecution timeMemory
849150emad234Coins (IOI17_coins)C++17
0 / 100
2 ms1124 KiB
#include <bits/stdc++.h> #define all(v) ((v).begin(),(v).end()) #define ll long long #define F first #define S second const ll mod = 1e9 + 7; const ll mxN = 1e5 + 2; using namespace std; vector<int> coin_flips(vector<int> b, int c) { vector<int> flips; int num = 0; for(int i = 6; i>=0;i--){ if(num + (1 << i) <= c){ num += (1 << i); if(!b[i]) flips.push_back(i); }else{ if(b[i]) flips.push_back(i); } } return flips; } int find_coin(vector<int> b) { int num = 0; for(int i = 0;i <= 6;i++){ num += (b[i] << i); } return num; } // // static string run_test() { // int c; // cin >> c; // vector<int> b(64); // 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; // }
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