제출 #1359437

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1359437		top1svtin	Sterilizing Spray (JOI15_sterilizing)	C++17	10 / 100	33 ms	3404 KiB

sterilizing

#include <bits/stdc++.h>

#define kien long long
#define FOR(i, a, b) for (int i = a;i <= b; i++)
#define FORD(i, a, b) for (int i = a;i >= b; i--)
#define task "a"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".out","w",stdout)

using namespace std;
const int mxn = 1e5 + 5;
kien n, k, q, a[mxn];

struct segment {
    int st[4 * mxn], lazy[4 * mxn];
    void build (int id, int l, int r) {
        if (l == r) {
            st[id] = lazy[id] = a[l];
            return;
        }
        int mid = (l + r) >> 1;
        build (id << 1, l , mid);
        build (id << 1 | 1, mid + 1, r);
        st[id] = st[id << 1] + st[id << 1 | 1];
        lazy[id] = max(lazy[id << 1], lazy[id << 1 | 1]);
    }

    void update (int id, int l, int r, int u, int v, int val) {
        if (u > r or v < l or lazy[id] == 0) return;
        if (l == r) {
            st[id] /= val;
            lazy[id] = st[id];
            return;
        }
        int mid = (l + r) >> 1;
        update (id << 1, l, mid, u, v, val);
        update (id << 1 | 1, mid + 1, r, u ,v, val);
        st[id] = st[id << 1] + st[id << 1 | 1];
        lazy[id] = max(lazy[id << 1], lazy[id << 1 | 1]);
    }

    void update1 (int id, int l, int r, int pos, int val) {
        if (l == r) {
            st[id] = lazy[id] = val;
            return;
        }
        int mid = (l + r) >> 1;
        if (pos <= mid)
            update1 (id << 1, l, mid, pos, val);
        else
            update1 (id << 1 | 1, mid + 1, r, pos, val);

        st[id] = st[id << 1] + st[id << 1 | 1];
        lazy[id] = max(lazy[id << 1], lazy[id << 1 | 1]);
    }

    kien get (int id, int l, int r, int u, int v) {
        if (u > r or v < l) return 0;
        if (u <= l and r <= v) return st[id];
        int mid = (l + r) >> 1;
        return get (id << 1, l, mid, u, v) + get(id << 1 | 1, mid + 1, r, u, v);
    }
} ST;

main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if (fopen(task".inp", "r")) {
        fin(task); fou(task);
    }
    cin >> n >> q >> k;
    FOR (i, 1, n) cin >> a[i];
    ST.build(1, 1, n);

    int type, L, R;
    while(q--) {
        cin >> type >> L >> R;
        if (type == 1) {
            ST.update1(1, 1, n, L, R);
        }
        else if (type == 2) {
            if (k == 1) continue;
            ST.update(1, 1, n, L, R, k);
        }
        else {
            cout << ST.get(1, 1, n, L, R) << "\n";
        }
    }
}

//5 10 3
//1 2 8 1 3
//1 2 5
//2 3 5
//3 2 5
//2 1 4
//1 3 2
//3 3 5
//1 2 4
//2 1 2
//1 1 4
//3 1

컴파일 시 표준 에러 (stderr) 메시지

sterilizing.cpp:65:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   65 | main() {
      | ^~~~
sterilizing.cpp: In function 'int main()':
sterilizing.cpp:7:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
sterilizing.cpp:69:9: note: in expansion of macro 'fin'
   69 |         fin(task); fou(task);
      |         ^~~
sterilizing.cpp:8:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 | #define fou(x) freopen(x".out","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
sterilizing.cpp:69:20: note: in expansion of macro 'fou'
   69 |         fin(task); fou(task);
      |                    ^~~

• 서브태스크 1: 0 / 5
• 서브태스크 2: 0 / 10
• 서브태스크 3: 10 / 10
• 서브태스크 4: 0 / 75