Submission #385813

#	Time	Username	Problem	Language	Result	Execution time	Memory
385813		The_Bitch	Coins (IOI17_coins)	C++14	10 / 100	13 ms	1792 KiB

coins

#include<bits/stdc++.h>
#include "coins.h"
#define F first
#define S second
#define pb push_back
using namespace std;
std::vector<int> coin_flips(std::vector<int> b, int c) {
    int flag=0;
    vector<int>flibs;
    for(int i=0;i<64;i++){
        if(b[i]==1&&i!=c)
            flag=1;
    }
    if(flag==1){
        for(int i=0;i<64;i++){
        if(i!=c&&b[i]!=0){
            flibs.pb(i);
        }
        else if(i==c&&b[i]!=1)
            flibs.pb(i);
        }
    }
    else{
        for(int i=0;i<64;i++){
        if(i!=c&&b[i]!=1){
            flibs.pb(i);
        }
        else if(i==c&&b[i]!=0)
            flibs.pb(i);
        }
    }
    return flibs;
}
int find_coin(std::vector<int> b) {
    map<int,int>mp;
    int index;
    for(int i=0;i<64;i++){
        mp[b[i]]++;
    }
    for(int i=0;i<64;i++)
        if(mp[b[i]]==1)
            index=i;
    return index;
    }
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;
}*/

Compilation message (stderr)

coins.cpp:45:15: warning: 'std::string run_test()' defined but not used [-Wunused-function]
   45 | static string run_test() {
      |               ^~~~~~~~
coins.cpp: In function 'int find_coin(std::vector<int>)':
coins.cpp:43:12: warning: 'index' may be used uninitialized in this function [-Wmaybe-uninitialized]
   43 |     return index;
      |            ^~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 15
• Subtask 3: 10 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 50