Submission #1040100

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040100		Andrey	Ski 2 (JOI24_ski2)	C++14	0 / 100	1791 ms	426632 KiB

Main

#include<bits/stdc++.h>
using namespace std;

long long dp[301][601][301];

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    long long n,br,h,c;
    cin >> n >> br;
    vector<pair<long long,long long>> haha(n);
    vector<long long> idk(601,INT_MAX);
    for(long long i = 0; i < n; i++) {
        cin >> h >> c;
        idk[h] = min(idk[h],c);
        haha[i] = {h,c};
    }
    for(long long i = 1; i <= 600; i++) {
        idk[i] = min(idk[i],idk[i-1]);
    }
    sort(haha.begin(),haha.end());
    haha.push_back({INT_MAX,INT_MAX});
    reverse(haha.begin(),haha.end());
    for(long long i = n-1; i >= 1; i--) {
        haha[i] = {haha[i].first,min(haha[i].second,haha[i+1].second)};
    }
    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;
            }
        }
    }
    for(long long i = 0; i <= 601; i++) {
        dp[0][i][0] = 0;
    }
    for(long long i = 1; i <= n; i++) {
        for(long long j = 100; j >= 0; j--) {
            for(long long k = i-1; k >= 0; k--) {
                if(haha[k+1].first > j) {
                    break;
                }
                dp[i][j][i-k] = dp[i][j+1][i-k];
                for(long long y = 0; y <= i; y++) {
                    dp[i][j][i-k] = min(dp[i][j][i-k],dp[k][j+1][y]+br*j*(i-k)+idk[j]*max(0LL,y-(i-k)));
                }
            }
        }
    }
    long long ans = LLONG_MAX;
    for(long long i = 0; i <= 100; i++) {
        ans = min(ans,dp[n][i][1]);
    }
    for(long long i = 1; i <= n; i++) {
        ans-=br*haha[i].first;
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:37:21: warning: iteration 601 invokes undefined behavior [-Waggressive-loop-optimizations]
   37 |         dp[0][i][0] = 0;
      |         ~~~~~~~~~~~~^~~
Main.cpp:36:28: note: within this loop
   36 |     for(long long i = 0; i <= 601; i++) {
      |                          ~~^~~~~~

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