제출 #1314855

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1314855		cubed	Progression (NOI20_progression)	C++20	0 / 100	1 ms	332 KiB

Progression

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

#define endl '\n'
#define f first
// #define s second
#define pb(x) push_back(x)
#define int long long
 
const int MOD = 1e9+7;
const int inf = 1e9;
const int INF = 1e18+20;
const int LOG = 25;

int n;
vector<int> a;

int tt (int l, int r) {
    int len = r-l+1;
    if (len==1) return len;

    int ans=2;
    int L=l;

    for (int R=l+1; R<=r; R++) {
        if (R==L+1) continue;

        if (a[R] - a[R-1] != a[L+1] - a[L]) {
            L=R-1;
        }

        ans = max(ans, R-L+1);
    }

    return ans;
}

void solve() {
    int q;
    cin>>n>>q;

    a.resize(n);
    for (int i=0; i<n; i++) {
        cin>>a[i];
    }

    while (q--) {
        int type;
        cin>>type;

        if (type==1) {

            int l, r, s, c;
            cin>>l>>r>>s>>c;
            l--; r--;

            for (int i=l; i<=r; i++) {
                a[i]+= (s + (i-l)*c);
            }

        } else if (type == 2) {

            int l, r, s, c;
            cin>>l>>r>>s>>c;
            l--; r--;

            for (int i=l; i<=r; i++) {
                a[i] = (s + (i-l)*c);
            }

        } else {

            int l, r;
            cin>>l>>r;
            l--; r--;

            cout<<tt(l, r)<<endl;

        }
    }
}

bool multi=false;

int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif

    int t=1;
    if (multi) cin>>t;
 
    while (t--) solve();
 
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Progression.cpp: In function 'int32_t main()':
Progression.cpp:91:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   91 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Progression.cpp:92:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   92 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 15
• Subtask 3: 0 / 35
• Subtask 4: 0 / 11
• Subtask 5: 0 / 13
• Subtask 6: 0 / 17