Submission #421905

#	Time	Username	Problem	Language	Result	Execution time	Memory
421905		lyc	Food Court (JOI21_foodcourt)	C++14	2 / 100	1098 ms	1208 KiB

foodcourt

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

#define TRACE(x) cerr << #x << " :: " << x << endl
#define _ << " " <<
#define SZ(x) ((int)(x).size())
#define ALL(x) (x).begin(),(x).end()
#define FOR(i,a,b) for(int i=(a);i<=(b);++i)
#define RFOR(i,a,b) for(int i=(a);i>=(b);--i)
typedef long long ll;

const int mxN = 250005;
const int mxM = 250005;
const int mxQ = 250005;

int N, M, Q;
int group[mxM];

struct Data { int L, R, C, K; };
vector<Data> stuff;

int main() {
    ios::sync_with_stdio(0); cin.tie(0);

    cin >> N >> M >> Q;
    FOR(i,1,Q){
        int T, L, R, C, K, A;
        long long B;
        cin >> T;
        if (T == 1) {
            cin >> L >> R >> C >> K;
            stuff.push_back({L,R,C,K});
        } else if (T == 2) {
            cin >> L >> R >> K;
            stuff.push_back({L,R,-1,K});
        } else {
            cin >> A >> B;

            stuff.push_back({ A,A,-1,B-1 });
            queue<pair<int,ll>> q;
            for (auto& x : stuff) if (x.L <= A && A <= x.R) {
                if (x.C == -1) {
                    ll del = x.K;
                    while (!q.empty() && del) {
                        auto& u = q.front();
                        if (u.second <= del) {
                            del -= u.second;
                            q.pop();
                        } else {
                            u.second -= del;
                            del = 0;
                        }
                    }
                } else {
                    q.push(make_pair(x.C,x.K));
                }
            }
            stuff.pop_back();

            if (q.empty()) cout << 0 << '\n';
            else cout << q.front().first << '\n';
        }
    }
}

Compilation message (stderr)

foodcourt.cpp: In function 'int main()':
foodcourt.cpp:39:39: warning: narrowing conversion of '(B - 1)' from 'long long int' to 'int' [-Wnarrowing]
   39 |             stuff.push_back({ A,A,-1,B-1 });
      |                                      ~^~

• Subtask 1: 2 / 2
• Subtask 2: 0 / 5
• Subtask 3: 0 / 7
• Subtask 4: 0 / 21
• Subtask 5: 0 / 15
• Subtask 6: 0 / 13
• Subtask 7: 0 / 26
• Subtask 8: 0 / 11