Submission #1371244

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Source Code Expand

#include <stdio.h>  
#include <algorithm>  
#include <assert.h>
#include <bitset>
#include <cmath>  
#include <complex>  
#include <deque>  
#include <functional>  
#include <iostream>  
#include <limits.h>  
#include <map>  
#include <math.h>  
#include <queue>  
#include <set>  
#include <stdlib.h>  
#include <string.h>  
#include <string>  
#include <time.h>  
#include <unordered_map>  
#include <unordered_set>  
#include <vector>  

#pragma warning(disable:4996)  
#pragma comment(linker, "/STACK:336777216")  
using namespace std;

#define mp make_pair  
#define Fi first  
#define Se second  
#define pb(x) push_back(x)  
#define szz(x) ((int)(x).size())  
#define rep(i, n) for(int i=0;i<n;i++)  
#define all(x) (x).begin(), (x).end()  
#define ldb ldouble  

typedef tuple<int, int, int> t3;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ldb;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
typedef pair <ll, int> pli;
typedef pair <db, db> pdd;

int IT_MAX = 1 << 15;
const ll MOD = 1000000007;
const int INF = 0x3f3f3f3f;
const ll LL_INF = 0x3f3f3f3f3f3f3f3f;
const db PI = acos(-1);
const db ERR = 1e-10;

ll X[100050];
ll Y[100050];
ll getv(int N, ll* a) {
	ll rv = 0;
	for (int i = 1; i <= N; i++) {
		ll v = a[i] * (2 * i - N - 1);
		v = (v%MOD + MOD) % MOD;
		rv = (rv + v) % MOD;
	}
	return rv;
}
int main() {
	int N, M, i;
	scanf("%d %d", &N, &M);
	for (i = 1; i <= N; i++) scanf("%lld", &X[i]);
	for (i = 1; i <= M; i++) scanf("%lld", &Y[i]);

	return !printf("%lld\n", getv(N, X) * getv(M, Y) % MOD);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:66:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d", &N, &M);
                        ^
./Main.cpp:67:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for (i = 1; i <= N; i++) scanf("%lld", &X[i]);
                                               ^
./Main.cpp:68:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for (i = 1; i <= M; i++) scanf("%lld", &Y[i]);
                                               ^

Judge Result