제출 #47707

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
47707	2018-05-06 11:13:14	square1001	Fireworks (APIO16_fireworks)	C++14	55 / 100	2070 ms	34452 KiB

fireworks

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#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;
// Time complexity: possibly O(N+M log(N+M))
int N, M, p[300009], c[300009], id[300009]; vector<int> g[300009]; vector<long long> v[300009];
int main() {
  cin.tie(0);
  ios_base::sync_with_stdio(false);
  cin >> N >> M;
  long long sum = 0;
  for (int i = 1; i < N + M; i++) {
    cin >> p[i] >> c[i];
    g[--p[i]].push_back(i);
    sum += c[i];
    if (i >= N) {
      v[i - N].push_back(c[i]);
      v[i - N].push_back(c[i]);
      id[i] = i - N;
    }
  }
  for (int i = N - 1; i >= 0; i--) {
    int mx = 0;
    for (int j : g[i]) {
      if (mx < v[id[j]].size()) {
        mx = v[id[j]].size();
        id[i] = id[j];
      }
    }
    vector<int> dv = { 0, (int)v[id[i]].size() };
 
 
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컴파일 시 표준 에러 (stderr) 메시지

fireworks.cpp: In function 'int main()':
fireworks.cpp:25:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if (mx < v[id[j]].size()) {
        ~~~^~~~~~~~~~~~~~~~~
fireworks.cpp:56:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < v[id[0]].size(); i++) {
                  ~~^~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 19 / 19
• Subtask 3: 29 / 29
• Subtask 4: 0 / 45