Submission #18757932

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Source Code Expand

#include <atcoder/segtree>
#include <cstdio>
#include <vector>

using namespace std;
using namespace atcoder;

int op(int a, int b) { return (a^b); }

int e() { return 0; }

int target;

bool f(int v) { return v < target; }

int main() {
    int n, q;
    scanf("%d %d", &n, &q);
    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        scanf("%d", &(a[i]));
    }

    segtree<int, op, e> seg(a);

    for (int i = 0; i < q; i++) {
        int t;
        scanf("%d", &t);
        if (t == 1) {
            int x, y;
            scanf("%d %d", &x, &y);
            x--;
            int v = seg.get(x);
            seg.set(x, v^y);
        } else if (t == 2) {
            int l, r;
            scanf("%d %d", &l, &r);
            l--;
            printf("%d\n", seg.prod(l, r));
        }
    }
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:18:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   18 |     scanf("%d %d", &n, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~
./Main.cpp:21:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   21 |         scanf("%d", &(a[i]));
      |         ~~~~~^~~~~~~~~~~~~~~
./Main.cpp:28:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   28 |         scanf("%d", &t);
      |         ~~~~~^~~~~~~~~~
./Main.cpp:31:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   31 |             scanf("%d %d", &x, &y);
      |             ~~~~~^~~~~~~~~~~~~~~~~
./Main.cpp:37:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   37 |             scanf("%d %d", &l, &r);
      |             ~~~~~^~~~~~~~~~~~~~~~~

Judge Result