提出 #3957799

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ソースコード 拡げる

#include<iostream>
#include<string>
#include<vector>
#include<queue>
#include<stack>
#include<map>
#include<set>
#include<algorithm>
#include<functional>
#include<cstdio>
#include<cstdlib>
#include<cmath>
#include<cassert>
#include<ctime>
using namespace std;

#define mind(a,b) (a>b?b:a)
#define maxd(a,b) (a>b?a:b)
#define absd(x) (x<0?-(x):x)
#define pow2(x) ((x)*(x))
#define rep(i,n) for(int i=0; i<n; ++i)
#define repr(i,n) for(int i=n-1; i>=0; --i)
#define repl(i,s,n) for(int i=s; i<=n; ++i)
#define replr(i,s,n) for(int i=n; i>=s; --i)
#define repf(i,s,n,j) for(int i=s; i<=n; i+=j)
#define repe(e,obj) for(auto e : obj)

#define SP << " " <<
#define COL << " : " <<
#define COM << ", " <<
#define ARR << " -> " <<
#define PNT(STR) cout << STR << endl
#define POS(X,Y) "(" << X << ", " << Y << ")"
#define DEB(A) " (" << #A << ") " << A
#define DEBREP(i,n,val) for(int i=0; i<n; ++i) cout << val << " "; cout << endl
#define ALL(V) (V).begin(), (V).end()
#define INF 1000000007
#define INFLL 1000000000000000007LL
#define EPS 1e-9

typedef unsigned int uint;
typedef unsigned long ulong;
typedef unsigned long long ull;
typedef long long ll;
typedef long double ld;
#define P_TYPE int
typedef pair<P_TYPE, P_TYPE> P;
typedef pair<P, P_TYPE> PI;
typedef pair<P_TYPE, P> IP;
typedef pair<P, P> PP;
typedef priority_queue<P, vector<P>, greater<P> > pvqueue;

#define N 100007

int n;
ll m;
vector<P> g[N];

ll memo[2*N];
ll dfs0(int v, int p, int e) {
  ll r = 1;
  repe(&pr, g[v]) {
    int w = pr.first, d = pr.second;
    if(w == p) continue;
    r *= 1 + dfs0(w, v, d);
    r %= m;
  }
  return memo[e] = r;
}

ll lv[2*N], rv[2*N];
void dfs1(int v, int p, ll par) {
  ll s = 1 + par;
  repe(&pr, g[v]) {
    int w = pr.first, d = pr.second;
    if(w == p) continue;
    lv[d] = s;
    s *= 1 + memo[d];
    s %= m;
  }
  s = 1;
  repr(i, g[v].size()) {
    P &pr = g[v][i];
    int w = pr.first, d = pr.second;
    if(w == p) continue;
    rv[d] = s;
    s *= 1 + memo[d];
    s %= m;
  }
  repe(&pr, g[v]) {
    int w = pr.first, d = pr.second;
    if(w == p) continue;
    dfs1(w, v, memo[d^1] = lv[d] * rv[d] % m);
  }
}

int main() {
  scanf("%d %lld", &n, &m);
  rep(i, n-1) {
    int x, y; scanf("%d %d", &x, &y); --x; --y;
    g[x].push_back(P(y, 2*i));
    g[y].push_back(P(x, 2*i+1));
  }
  rep(i, 2*n) memo[i] = -1;
  dfs0(0, -1, 2*n);
  dfs1(0, -1, 0);
  rep(v, n) {
    ll r = 1;
    repe(&p, g[v]) {
      int w = p.first, d = p.second;
      r *= 1 + memo[d];
      r %= m;
    }
    printf("%lld\n", r);
  }
  return 0;
}

提出情報

コンパイルエラー

./Main.cpp: In function ‘int main()’:
./Main.cpp:98:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %lld", &n, &m);
                           ^
./Main.cpp:100:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     int x, y; scanf("%d %d", &x, &y); --x; --y;
                                     ^

ジャッジ結果