#include <bits/stdc++.h> #define FOR(i, beg, ed, etr) for(ll i = beg;i <= ed;i += etr) #define FORN(i, beg, ed, etr) for(ll i = beg;i >= ed;i -= etr) #define all(x) x.begin(), x.end() #define F first #define pb push_back #define S second #define con continue using namespace std; typedef long long ll; typedef pair<ll,ll> pii; typedef pair<ll,ll> pll; typedef double db; typedef long double ld; const ll inf = 1e9; const ll INF = 1e18; const ll N = 2e5 + 5; const ll MOD = 1e9 + 7; ll a[N],dp[N]; void solve(){ ll n,q;cin >> n >> q; FOR(i, 1, n, 1){ cin >> a[i]; } while(q--){ ll l,r,x;cin >> l >> r >> x; FOR(i, l, r, 1){ a[i] += x; } FOR(i, 1, n, 1){ dp[i] = dp[i-1]; ll mx = a[i],mn = a[i]; FORN(j, i - 1, 1, 1){ mx = max(mx,a[j]); mn = min(mn,a[j ]); dp[i] = max(dp[i],dp[j-1] + (mx - mn)); } } cout << dp[n] << '\n'; } } main(){ ios_base::sync_with_stdio(0); cin.tie(0); // freopen("cardgame.in","r",stdin); // freopen("cardgame.out","w",stdout); ll abd = 1; // cin >> abd; FOR(i, 1, abd, 1){ solve(); } }

Main.cpp:44:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   44 | main(){
      | ^~~~