Submission #755987

#	Time	Username	Problem	Language	Result	Execution time	Memory
755987		MohamedFaresNebili	Pinball (JOI14_pinball)	C++14	0 / 100	6 ms	9812 KiB

pinball

#include <bits/stdc++.h>

        using namespace std;
        using ll = long long;

        #define int ll

        int M, N, st[1200005];
        array<int, 4> A[100005];
        void update(int v, int l, int r, int p, int val) {
            if(l == r) {
                st[v] = min(st[v], val);
                return;
            }
            int md = (l + r) / 2;
            if(p <= md) update(v * 2, l, md, p, val);
            else update(v * 2 + 1, md + 1, r, p, val);
            st[v] = min(st[v * 2], st[v * 2 + 1]);
        }
        int query(int v, int l, int r, int lo, int hi) {
            if(l > hi || r < lo) return 1e18;
            if(l >= lo && r <= hi) return st[v];
            return min(query(v * 2, l, (l + r) / 2, lo, hi),
                       query(v * 2 + 1, (l + r) / 2 + 1, r, lo, hi));
        }

        int32_t main() {
            ios_base::sync_with_stdio(0);
            cin.tie(0); cout.tie(0);
            cin >> M >> N;
            vector<int> comp; comp.push_back(N);
            for(int l = 0; l < M; l++) {
                cin >> A[l][0] >> A[l][1] >> A[l][2] >> A[l][3];
                comp.push_back(A[l][0]);
                comp.push_back(A[l][1]);
                comp.push_back(A[l][2]);
            }
            sort(comp.begin(), comp.end());
            comp.erase(unique(comp.begin(), comp.end()), comp.end());
            for(int l = 0; l < M; l++) {
                A[l][0] = lower_bound(comp.begin(), comp.end(), A[l][0]) - comp.begin();
                A[l][1] = lower_bound(comp.begin(), comp.end(), A[l][1]) - comp.begin();
                A[l][2] = lower_bound(comp.begin(), comp.end(), A[l][2]) - comp.begin();
            }
            for(int l = 0; l < 1200005; l++) st[l] = 1e18;
            vector<int> L(M, 1e18);
            vector<int> R(M, 1e18);
            for(int l = 0; l < M; l++) {
                if(A[l][0] == 0)
                    L[l] = A[l][3];
                else L[l] = min(L[l], A[l][3] + query(1, 0, comp.size() - 1, A[l][0], A[l][1]));
                update(1, 0, comp.size() - 1, A[l][2], L[l]);
            }
            for(int l = 0; l < 1200005; l++) st[l] = 1e18;

            for(int l = 0; l < M; l++) {
                if(A[l][1] == comp.size() - 1)
                    R[l] = A[l][3];
                else R[l] = A[l][3] + query(1, 0, comp.size() - 1, A[l][0], A[l][1]);
                update(1, 0, comp.size() - 1, A[l][2], R[l]);
            }
            int res = 1e18;
            for(int l = 0; l < M; l++)
                res = min(res, L[l] + R[l] - A[l][3]);
            cout << (res == 1e18 ? -1 : res) << "\n";
        }

Compilation message (stderr)

pinball.cpp: In function 'int32_t main()':
pinball.cpp:57:28: warning: comparison of integer expressions of different signedness: 'std::array<long long int, 4>::value_type' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |                 if(A[l][1] == comp.size() - 1)

• Subtask 1: 0 / 11
• Subtask 2: 0 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 49