AcWing_797 差分(模板)

#include <bits/stdc++.h>
using namespace std;
int n, m;
const int N = 100010, M = 100010;
int a[N], b[N];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n >> m;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        b[i] = a[i] - a[i - 1];
    }
    while(m --){
        int l, r, c;
        cin >> l >> r >> c;
        b[l] += c;
        b[r + 1] -= c;
    }
    int sum = 0;
    for(int i = 1; i <= n; i++){
        sum += b[i];
        cout << sum << ' ';
    }
    return 0;
}

#include <bits/stdc++.h>
using namespace std;
int n, m;
const int N = 100010, M = 100010;
int b[N];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> n >> m;
    for(int i = 1; i <= n; i++) cin >> b[i];
    for(int i = n; i; i --) b[i] = b[i] - b[i - 1];
    while(m --){
        int l, r, c;
        cin >> l >> r >> c;
        b[l] += c;
        b[r + 1] -= c;
    }
    int sum = 0;
    for(int i = 1; i <= n; i++){
        sum += b[i];
        cout << sum << ' ';
    }
    return 0;
}