제출 #1011983

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1011983		vantam	Sjeckanje (COCI21_sjeckanje)	C++17	15 / 110	2077 ms	2556 KiB

Main

#pragma GCC optimize("O3")
#pragma GCC target("avx,avx2,fma")
#include<bits/stdc++.h>
using namespace std;
const int N=1005 ;
long long i,j,n,q,type,l,r,x,ma,mi,lt,rt;
long long a[200005],dp[200005] ;
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);cout.tie(NULL);
    #define NAME "test"
    if(fopen(NAME".inp", "r")){
        freopen(NAME".inp", "r", stdin);
        freopen(NAME".out", "w", stdout);
    }
    cin >> n >> q;
    for(i=1;i<=n;i++) cin >> a[i] ;
    while(q--){
        cin >> l >> r >> x ;
        for(i=l;i<=r;i++) a[i]+=x ;
        dp[0]=0 ;
        for(i=1;i<=n;i++){
             ma=a[i];
             mi=a[i];
             dp[i]=-1e18;
             for(j=i;j>=1;j--){
                  ma=max(ma,a[j]) ;
                  mi=min(mi,a[j]) ;
                  dp[i]=max(dp[i], dp[j-1]+ma-mi) ;
             }
        }
        cout << dp[n] << '\n' ;
    }
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:13:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         freopen(NAME".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen(NAME".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 15 / 15
• Subtask 2: 0 / 40
• Subtask 3: 0 / 55