Submission #1073889

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Source Code Expand

#include <bits/stdc++.h>
#define SZ(X) ((int)(X).size())
#define ALL(X) (X).begin(), (X).end()
#define REP(I, N) for (int I = 0; I < (N); ++I)
#define REPP(I, A, B) for (int I = (A); I < (B); ++I)
#define RI(X) scanf("%d", &(X))
#define RII(X, Y) scanf("%d%d", &(X), &(Y))
#define RIII(X, Y, Z) scanf("%d%d%d", &(X), &(Y), &(Z))
#define DRI(X) int (X); scanf("%d", &X)
#define DRII(X, Y) int X, Y; scanf("%d%d", &X, &Y)
#define DRIII(X, Y, Z) int X, Y, Z; scanf("%d%d%d", &X, &Y, &Z)
#define RS(X) scanf("%s", (X))
#define CASET int ___T, case_n = 1; scanf("%d ", &___T); while (___T-- > 0)
#define MP make_pair
#define PB push_back
#define MS0(X) memset((X), 0, sizeof((X)))
#define MS1(X) memset((X), -1, sizeof((X)))
#define LEN(X) strlen(X)
#define PII pair<int,int>
#define VI vector<int>
#define VPII vector<pair<int,int> >
#define PLL pair<long long,long long>
#define VPLL vector<pair<long long,long long> >
#define F first
#define S second
typedef long long LL;
using namespace std;
const int MOD = 1e9+7;
const int SIZE = 1e6+10;
int a[SIZE],an[SIZE];
VI e[SIZE];
template <class T>
void maa(T& x,T y){
    if(x<y)x=y;
}
template <class T>
void mii(T& x,T y){
    if(x>y)x=y;
}
void f(int x){
    VI d;
    REP(i,SZ(e[x])){
        f(e[x][i]);
        d.PB(an[e[x][i]]+1);
    }
    sort(ALL(d),greater<int>());
    REP(i,SZ(d)){
        maa(an[x],d[i]+i);
    }
}
int main(){
    DRI(N);
    REPP(i,2,N+1){
        RI(a[i]);
        e[a[i]].PB(i);
    }
    f(1);
    printf("%d\n",an[1]);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:52:11: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     DRI(N);
           ^
./Main.cpp:54:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         RI(a[i]);
                 ^

Judge Result