제출 #1087915

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1087915		vjudge1	Izbori (COCI17_izbori)	C++17	48 / 80	1 ms	460 KiB

izbori

#include "bits/stdc++.h"
const signed MOD = 1e9 + 7;
const signed mod = 998244353;
using namespace std;
#define all(x) x.begin(), x.end()
#define ld long double
#define ll long long
#define pb push_back
#define mp make_pair
#define co cout <<
#define S second
#define F first

void solve() {
    int n, m, k;
    cin >> n >> m >> k;
    bool t[20] = {};
    int a[n][m];

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cin >> a[i][j];
        }
    }
    int g[20] = {};
    for (int i = 0; i < n; i++) {
        int j = 0;
        while (t[a[i][j]]) j++;
        g[a[i][j]]++;
    }
    int mx = 0, num;

    for (int i = 1; i <= m; i++) {
        if (g[i] > mx) {
            mx = g[i];
            num = i;
        }
        else if (g[i] == mx) {
            num = min(i, num);
        }
    }
    int cn = 0;
    co num;

    while (1) {
        int f[20] = {};
        for (int i = 0; i < n; i++) {
            int j = 0;
            while (t[a[i][j]]) j++;
            f[a[i][j]]++;
        }
        int mx = 0, num;

        for (int i = 1; i <= m; i++) {
            if (f[i] > mx) {
                mx = f[i];
                num = i;
            }
            else if (f[i] == mx) {
                num = min(i, num);
            }
        }
        if (num == k) {
            co '\n' << cn;
            return;
        }
        cn++;

        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                if (a[i][j] == num) {
                    t[num] = 1;
                    continue;
                }
            }
        }
    }
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    signed t = 1;
    // cin >> t;
    while (t--) solve();
}

컴파일 시 표준 에러 (stderr) 메시지

izbori.cpp: In function 'void solve()':
izbori.cpp:63:9: warning: 'num' may be used uninitialized in this function [-Wmaybe-uninitialized]
   63 |         if (num == k) {
      |         ^~
izbori.cpp:43:8: warning: 'num' may be used uninitialized in this function [-Wmaybe-uninitialized]
   43 |     co num;
      |        ^~~

• Subtask 1: 48 / 80