Submission #1141402

#	Time	Username	Problem	Language	Result	Execution time	Memory
1141402		Saul0906	Coins (IOI17_coins)	C++20	0 / 100	5 ms	580 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>
#define pii pair<int, int>
#define rep(a,b,c) for(ll a=b; a<c; a++)
#define repr(a,b,c) for(ll a=b-1; a>c-1; a--)
#define repa(a,b) for(auto a:b)
#define all(a) a.begin(), a.end()
#define fi first
#define se second
#define mid ((l+r+1)>>1)
#define pb push_back
#define ll long long
#define ull unsigned ll

using namespace std;
using vi = vector<int>;

const unsigned ll y=64;

vi coin_flips(vi b, int c) {
	int x=0;
	rep(i,0,64) x+=(b[i]*(i+1));
	rep(i,0,64){
		if(b[i]) x-=((i+1));
		else x+=((i+1));
		if(x%y==c) return {i};
		if(b[i]) x+=((i+1));
		else x-=((i+1));
	}
	return {1};
}

int find_coin(vi b) {
	int x=0;
	rep(i,0,64) x+=(b[i]*(i+1));
	return x%y;
}

Compilation message (stderr)

coins.cpp: In function 'vi coin_flips(vi, int)':
coins.cpp:26:36: warning: narrowing conversion of 'i' from 'long long int' to 'int' [-Wnarrowing]
   26 |                 if(x%y==c) return {i};
      |                                    ^
coins.cpp:26:36: warning: narrowing conversion of 'i' from 'long long int' to 'int' [-Wnarrowing]

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