結果

問題 No.3025 Chocol∀te
ユーザー 👑 hos.lyric
提出日時 2025-02-14 22:06:16
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 524 ms / 2,000 ms
コード長 3,184 bytes
コンパイル時間 1,507 ms
コンパイル使用メモリ 122,816 KB
実行使用メモリ 22,412 KB
最終ジャッジ日時 2025-02-14 22:10:08
合計ジャッジ時間 16,964 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
このコードへのチャレンジ
（要ログイン）
ファイルパターン 結果
sample AC * 1
other AC * 77
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:66:12: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   66 |       scanf("%d%d", &X[m], &Y[m]);
      |       ~~~~~^~~~~~~~~~~~~~~~~~~~~~
main.cpp:72:12: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   72 |       scanf("%lld", &A[u]);
      |       ~~~~~^~~~~~~~~~~~~~~
main.cpp:74:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   74 |     scanf("%d", &Q);
      |     ~~~~~^~~~~~~~~~
main.cpp:80:12: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   80 |       scanf("%d", &O[q]);
      |       ~~~~~^~~~~~~~~~~~~
main.cpp:82:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   82 |         scanf("%d%d", &U[q], &V[q]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~
main.cpp:86:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   86 |         scanf("%d%lld", &U[q], &B[q]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
main.cpp:89:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   89 |         scanf("%d", &U[q]);
      |         ~~~~~^~~~~~~~~~~~~

ソースコード

diff # 

#include <cassert>
#include <cmath>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <algorithm>
#include <bitset>
#include <complex>
#include <deque>
#include <functional>
#include <iostream>
#include <limits>
#include <map>
#include <numeric>
#include <queue>
#include <random>
#include <set>
#include <sstream>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>

using namespace std;

using Int = long long;

template <class T1, class T2> ostream &operator<<(ostream &os, const pair<T1, T2> &a) { return os << "(" << a.first << ", " << a.second << ")"; };
template <class T> ostream &operator<<(ostream &os, const vector<T> &as) { const int sz = as.size(); os << "["; for (int i = 0; i < sz; ++i) { if (i >= 256) { os << ", ..."; break; } if (i > 0) { os << ", "; } os << as[i]; } return os << "]"; }
template <class T> void pv(T a, T b) { for (T i = a; i != b; ++i) cerr << *i << " "; cerr << endl; }
template <class T> bool chmin(T &t, const T &f) { if (t > f) { t = f; return true; } return false; }
template <class T> bool chmax(T &t, const T &f) { if (t < f) { t = f; return true; } return false; }
#define COLOR(s) ("\x1b[" s "m")


int N, M;
vector<int> X, Y;
vector<Int> A;
int Q;
vector<int> O, U, V;
vector<Int> B;

vector<int> deg;
vector<set<int>> graph;
vector<Int> as, incoming;

void flip(int u, int v) {
  if (make_pair(deg[u], u) > make_pair(deg[v], v)) swap(u, v);
  auto it = graph[u].find(v);
  if (it != graph[u].end()) {
    graph[u].erase(it);
    incoming[v] -= as[u];
  } else {
    graph[u].insert(v);
    incoming[v] += as[u];
  }
}

int main() {
  for (; ~scanf("%d%d", &N, &M); ) {
    X.resize(M);
    Y.resize(M);
    for (int m = 0; m < M; ++m) {
      scanf("%d%d", &X[m], &Y[m]);
      --X[m];
      --Y[m];
    }
    A.resize(N);
    for (int u = 0; u < N; ++u) {
      scanf("%lld", &A[u]);
    }
    scanf("%d", &Q);
    O.assign(Q, -1);
    U.assign(Q, -1);
    V.assign(Q, -1);
    B.assign(Q, -1);
    for (int q = 0; q < Q; ++q) {
      scanf("%d", &O[q]);
      if (O[q] == 1) {
        scanf("%d%d", &U[q], &V[q]);
        --U[q];
        --V[q];
      } else if (O[q] == 2) {
        scanf("%d%lld", &U[q], &B[q]);
        --U[q];
      } else if (O[q] == 3) {
        scanf("%d", &U[q]);
        --U[q];
      } else {
        assert(false);
      }
    }
    
    deg.assign(N, 0);
    for (int m = 0; m < M; ++m) {
      ++deg[X[m]];
      ++deg[Y[m]];
    }
    for (int q = 0; q < Q; ++q) if (O[q] == 1) {
      ++deg[U[q]];
      ++deg[V[q]];
    }
    
    graph.assign(N, {});
    as = A;
    incoming.assign(N, 0);
    for (int m = 0; m < M; ++m) {
      flip(X[m], Y[m]);
    }
    for (int q = 0; q < Q; ++q) {
      if (O[q] == 1) {
        flip(U[q], V[q]);
      } else if (O[q] == 2) {
        const Int diff = B[q] - as[U[q]];
        as[U[q]] = B[q];
        for (const int v : graph[U[q]]) incoming[v] += diff;
      } else if (O[q] == 3) {
        Int ans = incoming[U[q]];
        for (const int v : graph[U[q]]) ans += as[v];
        printf("%lld\n", ans);
      } else {
        assert(false);
      }
    }
  }
  return 0;
}
0