Submission #741937

#	Time	Username	Problem	Language	Result	Execution time	Memory
741937		vjudge1	Boat (APIO16_boat)	C++17	9 / 100	2 ms	340 KiB

boat

// #pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
// #pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")  
#include<bits/stdc++.h>
#define f first
#define s second
#define pb push_back
#define sz(x) (int)x.size()
#define bit(a, i) ((a>>i)&1)

using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

const int K = 800;
const ll inf = 1e18;
const int mod = 1e9 + 7;
const int maxn = 3e5 + 100;

int n;
int a[maxn];
int b[maxn];
int dp[maxn];

void IHTW(){
    cin >> n;
    int ans = 0;
    for(int i=1; i<=n; i++){
        cin >> a[i] >> b[i];
        dp[i] = 1;
        for(int j=1; j<i; j++){
            if(a[j] < a[i]) dp[i] = (dp[j] + dp[i]) % mod;
        }
        ans = (ans + dp[i]) % mod;
    }
    cout << ans;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    int t=1;
    while(t--) IHTW();
}

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