제출 #475296

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
475296		nafis_shifat	푸드 코트 (JOI21_foodcourt)	C++14	0 / 100	287 ms	24580 KiB

foodcourt

#include<bits/stdc++.h>
#define ll long long
#define pii pair<ll,ll>
#define f first
#define s second
using namespace std;
const int mxn=3e5+5;
const int inf=1e9;

int n,m,q;


struct segtree {
    
    ll removed[4 * mxn];
    
    pii tree[4 * mxn];

    void init(int n) {
        for(int i = 0; i < 4 * mxn; i++) tree[i] = {0,0};
    }

    pii merge(pii a, pii b) {
        return { b.f + max(0ll, a.f - b.s), a.s + max(0ll,b.s - a.f) };
    }


    void propogate(int node) {
        int left = node << 1;
        int right = left | 1;

        tree[left] = merge(tree[node], tree[left]);
        tree[right] = merge(tree[node], tree[right]);

        tree[node] = {0,0};
    }

    void update(int node,int b,int e,int l,int r, pii v) {
        if(e < l || b > r) return;
        if(b >= l && e <= r) {
            tree[node] = merge(v, tree[node]);
            // cout<<"After update"<<b<<" "<<e<<" "<<v.f<<" - "<<v.s<<" "<<tree[node].f<<" "<<tree[node].s<<endl;
            return;
        }
        if(tree[node].f != 0 || tree[node].s != 0) propogate(node);

        int mid = b + e >>1;
        int left = node << 1;
        int right = left | 1;

        update(left, b, mid, l, r, v);
        update(right, mid + 1, e, l, r, v);
    }

    ll query(int node,int b,int e,int p) {
        if(b == e) return tree[node].s;

        int mid = b + e >> 1;
        int left = node << 1;
        int right = left | 1;

        if(tree[node].f != 0 || tree[node].s != 0) propogate(node);

        if(p <= mid) return query(left,b,mid,p);
        return query(right, mid + 1,e,p);
    }
} st;

int main() {
    cin >> n >> m >> q;
    st.init(n);


    for(int i = 1; i <= q; i++) {
        int tp;
        scanf("%d",&tp);

        if(tp == 1) {
            int l,r,c;
            ll k;
            scanf("%d%d%d %lld",&l,&r,&c,&k);

            st.update(1,1,n,l,r,{0,k});
        } else if(tp == 2) {
            int l,r;
            ll k;
            scanf("%d%d %lld",&l,&r,&k);
            st.update(1,1,n,l,r,{k,0});
        } else {
            ll a,b;
            scanf("%lld %lld",&a,&b);

            if(st.query(1,1,n,a) >= b) printf("1\n");
            else printf("-1\n");
        }

    }


}

컴파일 시 표준 에러 (stderr) 메시지

foodcourt.cpp: In member function 'void segtree::update(int, int, int, int, int, std::pair<long long int, long long int>)':
foodcourt.cpp:47:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   47 |         int mid = b + e >>1;
      |                   ~~^~~
foodcourt.cpp: In member function 'long long int segtree::query(int, int, int, int)':
foodcourt.cpp:58:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   58 |         int mid = b + e >> 1;
      |                   ~~^~~
foodcourt.cpp: In function 'int main()':
foodcourt.cpp:76:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |         scanf("%d",&tp);
      |         ~~~~~^~~~~~~~~~
foodcourt.cpp:81:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   81 |             scanf("%d%d%d %lld",&l,&r,&c,&k);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
foodcourt.cpp:87:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   87 |             scanf("%d%d %lld",&l,&r,&k);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
foodcourt.cpp:91:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |             scanf("%lld %lld",&a,&b);
      |             ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 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