제출 #105726

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
105726		Pro_ktmr	Boat (APIO16_boat)	C++14	9 / 100	957 ms	525312 KiB

boat

#include"bits/stdc++.h"
using namespace std;
#define LL long long
#define REP(i, n) for(int (i)=0; (i)<(n); (i)++)
#define PB push_back
#define MP make_pair
#define MOD 1000000007

int N;
int a[500],b[500];
vector<int> zaatu;

int dp[2][1005];

int main(){
	
	scanf("%d", &N);
	for(int i=0; i<N; i++){
		scanf("%d%d", a+i, b+i);
		b[i]++;
		//zaatu.PB(a[i]);
		//zaatu.PB(b[i]);
		for(int j=a[i]; j<b[i]; j++) zaatu.PB(j);
	}
	zaatu.PB(0);
	sort(zaatu.begin(), zaatu.end());

	for(int i=0; i<zaatu.size(); i++){
		dp[N%2][i] = 1;
	}
	for(int i=N-1; i>=0; i--){
		for(int j=0; j<zaatu.size(); j++){
			LL ans = dp[(i+1)%2][j];
			for(int k=max(zaatu[j]+1, a[i]); k<b[i]; k++){
				ans += dp[(i+1)%2][lower_bound(zaatu.begin(), zaatu.end(), k)-zaatu.begin()];
				ans %= MOD;
			}
			dp[i%2][j] = ans;
		}
	}

	cout << dp[0][0] - 1 << endl;
}

컴파일 시 표준 에러 (stderr) 메시지

boat.cpp: In function 'int main()':
boat.cpp:28:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<zaatu.size(); i++){
               ~^~~~~~~~~~~~~
boat.cpp:32:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j=0; j<zaatu.size(); j++){
                ~^~~~~~~~~~~~~
boat.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &N);
  ~~~~~^~~~~~~~~~
boat.cpp:19:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", a+i, b+i);
   ~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 22
• Subtask 3: 0 / 27
• Subtask 4: 0 / 42