Submission #1819042

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Source Code Expand

#include <bits/stdc++.h>
#define pb push_back
#define fs first
#define sc second
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
using namespace std;

typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<double> vd;
typedef pair<int, int> pii;
typedef vector<pii> vpii;

const int N=300000;
int p[N], lr[N];

int main() {
    int i, j, t, n;
    ll L, R, ans=0;
    scanf("%d", &n);
    for(i=1; i<=n; i++) {
        scanf("%d", &t);
        p[t]=i;
    }
    for(i=n; i>=1; i--) {
        j=p[i];
        L=lr[j-1]; if(!L) L=j;
        R=lr[j+1]; if(!R) R=j;
        ans+=i*(j-L+1)*(R-j+1);
        lr[L]=R;
        lr[R]=L;
    }
    printf("%lld\n", ans);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:22:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
                    ^
./Main.cpp:24:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &t);
                        ^

Judge Result