delete pics to save space

1.1982.cpp

@@ -0,0 +1,40 @@
+#include<cstdio>
+#include<algorithm>
+using namespace std;
+template<typename T> inline void read(T& t)
+{
+	t=0; int ch,f=false;
+	while(ch=getchar(),!((ch>='0'&&ch<='9')||ch=='-'));
+	if(ch=='-') f=true,ch=getchar();
+	t=ch^48;
+	while(ch=getchar(),ch>='0'&&ch<='9') t=t*10+(ch^48);
+	if(f) t=-t;
+}
+template<typename T,typename... Args> inline void read(T& t,Args&... args) { read(t); read(args...); }
+typedef __int128 LL;
+const int maxn=1000005;
+LL n,Mod,a[maxn],Max[maxn],tz[maxn],fs[maxn];
+int main()
+{
+#ifdef local
+	freopen("pro.in","r",stdin);
+#endif
+	read(n,Mod,a[1]);
+	LL maxx=a[1]; tz[1]=Max[1]=a[1];
+	for(int i=2;i<=n;i++)
+	{
+		read(a[i]);
+		Max[i]=max(Max[i-1]+a[i],a[i]);
+		maxx=max(maxx,Max[i]);
+		tz[i]=maxx; 
+	}
+	LL res=fs[1]=tz[1];
+	maxx=fs[1]*2;
+	for(int i=2;i<=n;i++)
+	{
+		res=max(res,fs[i]=maxx);
+		maxx=max(maxx,fs[i]+tz[i]);
+	}
+	printf("%d\n",int((res<0?-res:res)%Mod*(res>0?1:-1)));
+	return 0;
+}