Submission #651403

#	Time	Username	Problem	Language	Result	Execution time	Memory
651403		BidoTeima	Izbori (COCI17_izbori)	C++17	64 / 80	18 ms	340 KiB

izbori

/*
ID: BidoTeima
LANG: C++11
TASK: Izbori
*/
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
void moo(string filename);
void ACPLS(string str = "")
{
    if(str=="NOF")return;
    if(str.size())
        moo(str);
    else{
        #ifndef ONLINE_JUDGE
            freopen("output.txt", "w", stdout);
            freopen("input.txt", "r", stdin);
        #endif
    }
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
}
void moo(string fileName){
    freopen((fileName+".in").c_str(),"r",stdin);
    freopen((fileName+".out").c_str(),"w",stdout);
}
#define tc         \
    int tttttt/*,subtask*/;    \
    cin >> tttttt/* >> subtask*/; \
    while (tttttt--)/*end
*/    

int main()
{
    //ACPLS("");
    int n,m,k;
    cin>>n>>m>>k;
    vector<vector<int>>a(n,vector<int>(m));
    int f[m+1]={0};
    for(int i = 0; i < n; i++){
        for(int j = 0; j < m; j++){
            cin>>a[i][j];
            if(j == 0)
                ++f[a[i][j]];
        } 
    }
    int winner = 1;
    for(int i = 1; i <= m; i++){
        if(f[i] > f[winner])
            winner = i;
    }
    cout<<winner<<'\n';
    bool vis[m+1]={0};
    int ans = m-1;
    for(int i = 0; i < (1<<m); i++){
        if(i&(1<<k))continue;
        int freq[m+1]={0};
        for(int j = 0; j < n; j++){
            for(int k = 0; k < m; k++){
                if(!(i&(1<<a[j][k]))){
                    ++freq[a[j][k]];
                    break;
                }
            }
        }
        if(max_element(freq+1,freq+m+1)-freq == k){
            ans=min(ans,__builtin_popcount(i));
        }
    }
    cout<<ans<<'\n';
}

Compilation message (stderr)

izbori.cpp: In function 'int main()':
izbori.cpp:55:10: warning: unused variable 'vis' [-Wunused-variable]
   55 |     bool vis[m+1]={0};
      |          ^~~
izbori.cpp: In function 'void ACPLS(std::string)':
izbori.cpp:17:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |             freopen("output.txt", "w", stdout);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
izbori.cpp:18:20: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |             freopen("input.txt", "r", stdin);
      |             ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
izbori.cpp: In function 'void moo(std::string)':
izbori.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen((fileName+".in").c_str(),"r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
izbori.cpp:27:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     freopen((fileName+".out").c_str(),"w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 64 / 80