Submission #1386728

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;

typedef long long LL;
typedef pair<int, int> pii;

#define fst first
#define snd second
#define pb push_back
#define eb emplace_back
#define REP(i, a, b)  for(int i = (a), i##end = (b); i < i##end; ++i)
#define DREP(i, a, b) for(int i=(a-1), i##end = (b); i >=i##end; --i)

template <typename T> bool chkmax(T& a, T b) { return a < b ? a = b, 1 : 0; }
template <typename T> bool chkmin(T& a, T b) { return a > b ? a = b, 1 : 0; }

const int oo = 0x3f3f3f3f;
const int maxn = 100000 + 10;

template<typename T> T read() {
    T n(0), f(1);
    char ch = getchar();
    for( ;!isdigit(ch); ch = getchar()) if(ch == '-') f = -1;
    for( ; isdigit(ch); ch = getchar()) n = n * 10 + ch - 48; 
    return n * f;
}

int n;
int a[maxn];

int main() {
#ifdef Wearry
    freopen("data.txt", "r", stdin);
    freopen("ans.txt", "w", stdout);
#endif

    scanf("%d", &n);
    REP(i, 0, n) scanf("%d", a + i);

    sort(a, a + n);
    if(a[n-1] - a[0] > 1) { 
        return puts("No"), 0;
    }

    if(a[n-1] - a[0] == 0) {
        return puts((a[0] == n-1 || a[0] <= n/2) ? "Yes" : "No"), 0;
    }

    int col = a[0], gro = 0;
    for(int i = 1; i < n; i++) {
        if(a[i] == a[0]) 
            -- col;
        else ++ gro;
    }

    puts((col > 0 && col <= gro/2) ? "Yes" : "No");
    
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:37:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
./Main.cpp:38:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     REP(i, 0, n) scanf("%d", a + i);
                                    ^

Judge Result