Submission #1062106

#	Time	Username	Problem	Language	Result	Execution time	Memory
1062106		Andrey	Ski 2 (JOI24_ski2)	C++14	86 / 100	1508 ms	977712 KiB

Main

#include<bits/stdc++.h>
using namespace std;
 
long long dp[301][601][301];
long long wow[301][601][301];
deque<pair<long long,long long>> troll[601][301];
 
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    long long n,br,h,c,ans = LLONG_MAX;
    cin >> n >> br;
    vector<pair<long long,long long>> haha(n+1,{-1,-1});
    vector<long long> idk(601,LLONG_MAX/10);
    for(long long i = 0; i < n; i++) {
        cin >> h >> c;
        idk[h] = min(idk[h],c);
        haha[i+1] = {h,c};
    }
    for(long long i = 1; i <= 600; i++) {
        idk[i] = min(idk[i],idk[i-1]);
    }
    sort(haha.begin(),haha.end());
    for(long long i = 0; i < 301; i++) {
        for(long long j = 0; j < 601; j++) {
            for(long long k = 0; k < 301; k++) {
                dp[i][j][k] = LLONG_MAX/10;
                wow[i][j][k] = LLONG_MAX/10;
            }
        }
    }
    for(long long i = haha[1].first; i <= 600; i++) {
        dp[1][i][1] = haha[1].first*br;
    }
    for(long long j = 0; j <= 600; j++) {
        for(long long y = 0; y <= 300; y++) {
            long long c = dp[1][j][y]-br*(j+1);
            troll[j][y].push_back({c,1});
        }
    }
    for(long long y = 1; y <= 300; y++) {
        for(long long j = 0; j <= 600; j++) {
            wow[1][j][y] = min(wow[1][j][y-1],dp[1][j][y]-y*idk[j]);
        }
    }
    for(long long i = 2; i <= n; i++) {
        for(long long j = max(1LL,haha[i].first); j <= 600; j++) {
            for(long long k = i-1; k >= 1; k--) {
                if(idk[j-1] < LLONG_MAX/10) {
                    dp[i][j][i-k] = min(dp[i][j][i-k],wow[k][j-1][i-k]+(i-k)*br*j+(i-k)*idk[j-1]);
                }
            }
        }
        for(long long j = 0; j < 600; j++) {
            for(long long y = 0; y <= i; y++) {
                if(j+1 >= haha[i].first) {
                    dp[i][j+1][y] = min(dp[i][j+1][y],troll[j][y][0].first+i*(j+1)*br);
                }
            }
        }
        for(long long j = 1; j <= 600; j++) {
            for(long long y = 0; y <= 300; y++) {
                dp[i][j][y] = min(dp[i][j][y],dp[i][j-1][y]);
            }
        }
        for(long long j = 0; j <= 600; j++) {
            for(long long y = 1; y <= i; y++) {
                if(troll[j][y][0].second <= i-y) {
                    troll[j][y].pop_front();
                }
                long long c = dp[i][j][y]-i*br*(j+1);
                while(!troll[j][y].empty() && troll[j][y][troll[j][y].size()-1].first > c) {
                    troll[j][y].pop_back();
                }
                troll[j][y].push_back({c,i});
            }
        }
        for(long long y = 1; y <= 300; y++) {
            for(long long j = 0; j <= 600; j++) {
                if(idk[j] < LLONG_MAX/10) {
                    wow[i][j][y] = min(wow[i][j][y-1],dp[i][j][y]-y*idk[j]);
                }
            }
        }
    }
    for(long long i = 0; i <= n; i++) {
        ans = min(ans,dp[n][600][i]);
    }
    for(long long i = 1; i <= n; i++) {
        ans-=haha[i].first*br;
    }
    cout << ans << endl;
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 12 / 12
• Subtask 3: 9 / 9
• Subtask 4: 33 / 33
• Subtask 5: 27 / 27
• Subtask 6: 0 / 14