Submission #908917

#	Time	Username	Problem	Language	Result	Execution time	Memory
908917		12345678	Coins (IOI17_coins)	C++17	25 / 100	9 ms	1696 KiB

coins

#include "coins.h"
#include <bits/stdc++.h>

using namespace std;

int mp[10];

std::vector<int> coin_flips(std::vector<int> b, int c) {
    mp[0]=mp[2]=mp[5]=mp[7]=0;
    mp[4]=mp[3]=1;
    mp[1]=mp[6]=2;
    int vl=0;
    for (int i=0; i<3; i++) if (b[i]) vl|=(1<<i);
    if (mp[vl]==c) return vector<int> {4};
    for (int i=0; i<3; i++) if (mp[vl^(1<<i)]==c) return vector<int> {i};
}

int find_coin(std::vector<int> b) {
    mp[0]=mp[2]=mp[5]=mp[7]=0;
    mp[4]=mp[3]=1;
    mp[1]=mp[6]=2;
    int vl=0;
    for (int i=0; i<3; i++) if (b[i]) vl|=(1<<i);
    return mp[vl];
}

Compilation message (stderr)

coins.cpp: In function 'std::vector<int> coin_flips(std::vector<int>, int)':
coins.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type]
   16 | }
      | ^

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