Submission #1065704

#	Time	Username	Problem	Language	Result	Execution time	Memory
1065704		Unforgettablepl	Long Distance Coach (JOI17_coach)	C++17	71 / 100	2068 ms	18600 KiB

coach

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

#define int long long


int32_t main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int X,N,M,W,T;
    cin >> X >> N >> M >> W >> T;
    vector<tuple<int,int,int>> arr;
    arr.emplace_back(0,0,0);
    int iterations = X/T;
    X%=T;
    arr.emplace_back(X,2,iterations);
    for(int i=1;i<=N;i++) {
        int S;cin>>S;
        arr.emplace_back(S%T,2,S/T);
    }
    for(int i=1;i<=M;i++) {
        int D,C;cin>>D>>C;
        arr.emplace_back(D,1,C);
    }
    sort(arr.begin(), arr.end());
    vector<int> DP(arr.size());
    DP[0] = (iterations+1)*W;
    for(int i=1;i<arr.size();i++) {
        auto [pos,type,c] = arr[i];
        if(type==1) {
            if(pos<X)DP[i]=(iterations+1)*W + DP[i-1];
            else DP[i]=iterations*W + DP[i-1];
            continue;
        }
        DP[i]=DP[i-1];
        int mini = c;
        int offset = 0;
        for(int j=i-1;j;j--) {
            if(get<1>(arr[j])!=1) {
                mini = min(mini,get<2>(arr[j]));
                if(mini<c)break;
                continue;
            }
            offset+=get<2>(arr[j])+mini*W;
            DP[i]=min(DP[i],DP[j-1]+offset);
        }
    }
    cout << DP.back() << '\n';
}

Compilation message (stderr)

coach.cpp: In function 'int32_t main()':
coach.cpp:28:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::tuple<long long int, long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |     for(int i=1;i<arr.size();i++) {
      |                 ~^~~~~~~~~~~

• Subtask 1: 16 / 16
• Subtask 2: 30 / 30
• Subtask 3: 25 / 25
• Subtask 4: 0 / 29