题解 | 【模板】差分

#include <iostream>
using namespace std;
typedef long long LL;
const LL N=1e5+10;
LL  s[N];
int main() 
    {
        LL n;
        LL m;
        cin>>n;
        cin>>m;
        for(int i=1;i<=n;i++)
        {
            LL x;
            cin>>x;
            s[i]=s[i]+x;
            s[i+1]=s[i+1]-x;
        }
        while(m>=1)
        {
            LL l,r,k;
            cin>>l>>r>>k;
            s[l]=s[l]+k;
            s[r+1]-=k;
            m--;
        }
        for(int i=1;i<=n;i++)
        {
            s[i]=s[i-1]+s[i];
            cout<<s[i]<<' ';
        }

        return 0;
    }