제출 #51624

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
51624	2018-06-19 09:27:22	tmwilliamlin168	Boat (APIO16_boat)	C++14	100 / 100	557 ms	8656 KiB

boat

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int mxN=500, M=1e9+7;
int n, a[mxN], b[mxN];
ll dp[mxN+1][2*mxN], c[2*mxN][mxN+1];
vector<int> pts;
inline ll modI(ll a, ll m) {
  return a<=1?a:(1-modI(m%a, a)*m)/a+m;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  
  cin >> n;
  for(int i=0; i<n; ++i) {
    cin >> a[i] >> b[i], --a[i];
    pts.push_back(a[i]);
    pts.push_back(b[i]);
  }
  sort(pts.begin(), pts.end());
  pts.resize(unique(pts.begin(), pts.end())-pts.begin());
  for(int i=1; i<pts.size(); ++i) {
    c[i][1]=pts[i]-pts[i-1];
    for(int j=2; j<=n; ++j)
      c[i][j]=c[i][j-1]*(pts[i]-pts[i-1]+j-1)%M*modI(j, M)%M;
 
 
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컴파일 시 표준 에러 (stderr) 메시지

boat.cpp: In function 'int main()':
boat.cpp:27:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=1; i<pts.size(); ++i) {
               ~^~~~~~~~~~~
boat.cpp:32:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<pts.size(); ++i)
               ~^~~~~~~~~~~
boat.cpp:36:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=1; j<pts.size(); ++j) {
                ~^~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 22 / 22
• Subtask 3: 27 / 27
• Subtask 4: 42 / 42